Care to share your loads, velocities?

I'm not, but like you I am curious to see how 26 will work with the Swede.

Been tinkering with this and ran into way too high a velocity still with no pressure signs. I dropped back 2.5 grains and am at 51 gr. with 129 ALR and Hornadays. Have not clocked this one but should be close to 3000 fps. Lapua cases 3.115" OAL. bullets are jumping 0.02" in my rifle. No idea if I am good on pressure or not. I was going for 64,000 psi. Accuracy is good.

I’m using 53.3 RL26, Hornady cases, CCI BR2s and the 140 AB. It’s running about 2890-2900 depending on the day. It’s been an ultra consistent load a few times to the range. The rifle is a M70 Featherweight. One of my favorite loads in that rifle. Everytime I shoot it I smile cause it feels gentle but the 140 at 2900 carries some mail in my book.

140 clocking 2900 in the Swede is very impressive. Is that a 22 inch barrel? Ever had any pressure signs?

Those are good numbers indeed!

Thanks beretzs, exactly what I was looking for.

Mine is also a M70 featherweight.

I loaded the 140 Partition in Lapua cases in .5 grain increments from 50.0-52.0.

Range time tomorrow.

RL26 and the Swede seem like a great match in my rifle. Great speed in my opinion and the accuracy has been excellent so far. Your combo should be pretty danged good too. I like the 140 in the Swede. Especially seated out for the 70’s.

Not a lick of traditional pressure signs. I used the same case for finding my node so I’ve shot one case 14-15 times so far and it’s still kicking. I did anneal between shots and minimal sizing but primers go in tight and not a mark on the case.

Tikka T3 6.5X55 swede
147 ELD 3.200 COAL 10 thou off lands
49.5 grains Reloader 26
Lapua Brass
Remington 9 1/2
2728 fps 22" barrel


No pressure signs, extremely accurate


Trystan

Can you report back on velocities please. I'm getting ready to work up a load with 140 Hornady SP Interlock and RL 26


Trystan

Wasn't able to get out this morning as planned, but I'll report back as soon as I do.

R26 at 53.5 with 129-130 grain bullets was giving me 3130-3150 fps. That seemed way high but no pressure signs. I pulled those loads but on second loading primers were still tight. I need to check my Magneto speed to make sure it is on. I might have one of those legendary fast barrels but that seemed too fast, 6.5-284 velocities out of a Swede?

Anything over 2,800 fps and I am good to go for this season. Maybe when I get back to load work up there will be more published data.

Even if I see no signs of pressure in the brass I consider velocity to be one sign indicating pressure I look to. With that said I would think 3000 fps with 130s in a 6.5X55 Swede would not be out of the question.

The 260 Remington shows loads with 130 grain bullets in the Nosler Reloading Guide 8 at 2965 fps with RL 17 and a 24" barrel. The Swede I believe holds 5 more grains of powder. My personal load for the Swede and 130 accubond is 47 grains of RL 17 for 2920 fps 22" barrel and its proved to be resistant to temp change from below zero to 70 degrees Fahrenheit. I haven't tried RL 26 with 130s so I have no idea but for the 147 eld RL26 worked like a charm. I have a sneaking suspicion however that in the 130 class RL 17 will prove to be the more resistant load than RL 26 overall. I did try RL 17 with the 143 ELD-X and though it worked very well with 130s in cold weather there was a significant drop in velocity with the 143 ........enough to change point of impact at 500 yds by 6 inches

With the data I've collected on the Swede along with load data that is available in the Nosler 8 Guide if I was going to look for 3000 fps with a 130 I'd start with 44 grains of RL 17 and work up to 3000 fps



Trystan

Tag

I have some recent info on using RL 26 in my 6.5 x 55s on an Excel spreadsheet I would be willing to share. But I haven't been able to figure out how to attach the file. I would be willing to email the file to someone if they could post it for me. I am experimenting with a promising bullet from BIB. It is a 135 grain hollow point boat tail with a G1 BC of 650.
Duane

I got the opportunity to work up a new load and here are the results from this morning..........

Tikka T3 6.5X55 Swede 22" barrel
140 Hornady SP Interlock
RL 26
Lapua Brass
Rem 9/12
Coal 3.070
.010 off lands
Temperature 50°

50 gr RL26 2751, 2759, 2764
Group 1.32"

51 gr RL26 2814, 2838,2805
Group .43"

52 gr RL26 2873, 2871, 2867
Group 1.63"

52.5 gr RL26 2915
1 shot for velocity and pressure check


All groups were shot at 135 lasered yds via Sig kilo 2200 from the prone position.
52.5 grains showed primer cratering that would noticeably catch the fingernail and you could see with the eye. No other loads showed any signs

I'm going to back it down to 51 grains to put me at an average of around 2820 fps and test again when the temps drop to zero.



Trystan

Trystan,
Those are respectable numbers for a 140gr, for certain.

Tag

340boy,

I took the time to do some cross referencing from the Nosler 8 guide as that's all one can do when there is no pressure data available. The 260 Remington shows a load with IMR 7828 in a 24" barrel at 2822 fps. Given that RL 26 is theoretically a slower powder than IMR 7828 and that the 6.5 Swede holds 5 more grains of powder than a 260 Remington I'm assuming I would be safe at similar velocities in a 22" barrel.

From what I've been told concerning the 140 hornady sp 2800 is a good place to be and coincidentally its where accuracy showed itself

Overall it was a great morning and I was pleased with the results ☺



Trystan

Thanks for sharing Trystan. Good, useful info.
Duane

That 140 Hornady should be real good at 2800. Sounds like a great shooting load.

Almost as good as a 140 accubond at 2900 😁

Thanks beretzs and best of luck to hunting what's left of this year


Trystan

Thank you

I hope to use the Swede a little this fall. Awesome little round for the deer woods.

This. Thank you, Trystan.

An update as promised.

Shooting the Winchester 70 classic featherweight today.

Lapua brass, Federal 210 match primers, and reloader 26 under the 140 grain partition.

3 shot groups, velocity recorded is the average for the three shots according to my lab radar.

50.0: 2808 fps
50.5: 2849 fps
51.0: 2877 fps

Based on the velocity of the 51.0 load I did not shoot the 51.5 or the 52.0 loads I had with me.

I think you’ve got a winner. That’s a killer load in the Swede.

How was the accuracy?

Those are good numbers. Much better than what I saw out of my M70 FWT with 140 NPs with RL 22.

Thanks for sharing.

The 50.0 load was sub moa.

If it repeats, I will call it good.

Nice you got the opportunity to go shooting. Any day out shooting is a good day 😁

Thanks for sharing and to others who shared as well


Trystan

I think you are there and your rifle shoots similar to mine. I could go higher with only slightly flattened primers but no need to push it too hard. I am staying at this level and 51.5 for the 129-130s.

Note to Self....Gotta finish burning up the opened RL19 & RL22 on hand this winter...Plan the work, THEN Work the plan...

Tag

I didn't realize Randy was making a 6.5 bullet, although his site says .625-.630 BC on that bullet.

Any current feed back on accuracy or BC's at distance yet?

I'll have to call him when I have 3 hours to blow......

Tag so I can find it again

Tag

We have been shooting the #26 in the 6.5x47, 6.5 Creed, and the 6.5x55, the powder gives lower pressures with speed, seems to have a very gentle pressure curve with no spikes. 26 seems to like specific primers, we use the fed 215 in the 6.5x55 and the 6.5x55.

Here is the load in a 24", 8T brux with .169 freebore on the reamer, Remington 700 long action. Tikka's have a lot of freebore, more than .169, so Tikka loads as you have seen will take a tad bit more powder.

6.5x55 with .169 FB, lapua brass
Fed 215
130g nosler accubond, 127g Barnes long range
51.5g is a safe working max load for this particular barrel and chamber
Accubond seated .005 off the lands, Barnes is jumping .050
3150 fps, very low SD
1/2"-3/4" with the Accubond and about 1/3" groups with the Barnes

Repeatable bug hole accuracy at 48.5g with both bullets at 2850 fps, primer edges are very round with out the slightest hint of pressure issues, we neck sized the cases at this point

143-147g ELD
2850 is the accuracy node that shoots 3/8" groups, 2900 is 3/4", safe working load

These loads are accurate and safe in this one particular barrel, work up to these in your barrel.

If you get on the 26 bandwagon, play with primer choices, you will see huge differences. The 6.5x47's we played with, we formed cases out of Lapua 22/250 cases so we could use hotter primers which helped a lot in group size.

Tag, some great practical information here for those of us that love the 6.5x55.

Tag

tag...

Tag... just picked up 8lbs at Sportsman’s Whorehouse for $180

You guys are killing me. Now I gotta get another 6.5 or have something rebarreled.

I have just loaded up some test rounds for my 6.5x55 in a cz 550. hopefully get out on sunday to test.

tag this thread for some really good load data for the Swede.

Why don't you the other tagger's just subscribe to the thread so those of us that have subscribed don't get emails every time one of you tagger tag's ?


Click on >>"Thread Options" << @ the top left side of this thread, then click on >>"Follow Thread"<<..


Thread Options
Who is shooting RL26 in the 6.5x55?
nyrifleman Online Content
Campfire Guide

I did subscribe to the thread. Why don't you just check in on the thread from time to time and not be bothered with emails?

If I did what you say, then there would be no point in subscribing..

I put this up in another spot but I figured it might be helpful here. These are out of my little Featherweight

Those are very impressive numbers. 😎
Guess I better go find a jug of RL26!

not true. I subscribe yet don't have email notifications. I just check the thread daily when I have time or when I think about it.

+1. Well done and thanks for sharing with the group.

did not get out to try my reloads this past week but am anxious might be a couple weeks now....just to darn busy

Morning,just curious if anyone has figured out a good starting point with Barnes 130 gr.So far 130 acubombs and 51 gr of 26 is my huckleberry

I’d probably start around 48 and work up..

beretzs,
I have a M70 feather wt. with a very long throat..
Wondering how far off the lands your loads are in your M70 with 130's and 140gr. plus ??

Having my Swede twisted together as this post unfolds......can’t wait.

84L Montana Lilja dup @22” by Dave Bruno

Greg

I’m at .050-.060” for the 140 Accubonds. Can’t remember with the 130’s.

I’ll check it out and get you some truer numbers though. I’m just thinking that’s where I started them and don’t remember altering the seating depth much.

That will be the ultimate in a Lwt. 6.5X55 along with a Barrett Fieldcraft..

Shot my sweede this weekend rl26 with 50gr and 143 eldx and shot an average speed of just shy of 2900fps. And the groups where just under and inch. Time to tinker with the load and seating depth. I am very impressed with the load and rl26

I've got a Barrett Fieldcraft and trying the 130 Swift Scirocco. Anyone using that combination or can anyone give me some guidance on starting/max load data? I've been loading IMR 4350/4831/H4831/RL19 and CCI 200 primers. Velocity has ranged from 2660 to 2770 depending on the powder. Accuracy has been somewhere in the .75 MOA range. I know the seating depth on Swifts are finicky but I think I've finally settled on an OAL.

I've got some 130 Accubonds to try if I get too disgusted with the Swifts.

I raised the Max PSI to 63K..

Here is RL26

Cartridge : 6.5 x 55 Swedish
Bullet : .264, 130, Swift Scirocco
Useable Case Capaci: 52.180 grain H2O = 3.388 cm³
Cartridge O.A.L. L6: 3.150 inch = 80.01 mm
Barrel Length : 22.0 inch = 558.8 mm
Powder : Alliant Reloder-26

Predicted data by increasing and decreasing the given charge,
incremented in steps of 0.926% of nominal charge.
CAUTION: Figures exceed maximum and minimum recommended loads !

Step Fill. Charge Vel. Energy Pmax Pmuz Prop.Burnt B_Time
% % Grains fps ft.lbs psi psi % ms

-09.3 95 49.00 2746 2176 44649 12903 98.8 1.267
-08.3 96 49.50 2778 2227 46222 13005 99.0 1.246
-07.4 97 50.00 2809 2278 47857 13100 99.3 1.226
-06.5 98 50.50 2841 2330 49560 13187 99.5 1.206
-05.6 99 51.00 2873 2382 51332 13266 99.7 1.186
-04.6 100 51.50 2904 2435 53179 13336 99.8 1.167
-03.7 101 52.00 2936 2488 55103 13397 99.9 1.148 ! Near Maximum !
-02.8 102 52.50 2967 2541 57109 13449 100.0 1.129 ! Near Maximum !
-01.9 102 53.00 2998 2595 59200 13492 100.0 1.111 ! Near Maximum !
-00.9 103 53.50 3029 2649 61382 13531 100.0 1.093 ! Near Maximum !
+00.0 104 54.00 3060 2704 63660 13569 100.0 1.075 !DANGEROUS LOAD-DO NOT USE!
+00.9 105 54.50 3091 2759 66033 13605 100.0 1.057 !DANGEROUS LOAD-DO NOT USE!
+01.9 106 55.00 3122 2814 68520 13640 100.0 1.040 !DANGEROUS LOAD-DO NOT USE!
+02.8 107 55.50 3153 2870 71118 13674 100.0 1.023 !DANGEROUS LOAD-DO NOT USE!
+03.7 108 56.00 3184 2926 73826 13706 100.0 1.006 !DANGEROUS LOAD-DO NOT USE!
+04.6 109 56.50 3214 2982 76674 13737 100.0 0.990 !DANGEROUS LOAD-DO NOT USE!

Results caused by ± 10% powder lot-to-lot burning rate variation using nominal charge
Data for burning rate increased by 10% relative to nominal value:
+Ba 104 54.00 3202 2960 80806 12951 100.0 0.981 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 104 54.00 2841 2330 49321 13856 97.0 1.199




R19 and the other powders you mentioned. Hope this helps. RL26 was definitely the fastest in my rifle.

Cartridge : 6.5 x 55 Swedish
Bullet : .264, 130, Swift Scirocco
Useable Case Capaci: 52.180 grain H2O = 3.388 cm³
Cartridge O.A.L. L6: 3.150 inch = 80.01 mm
Barrel Length : 22.0 inch = 558.8 mm
Powder : Alliant Reloder-19

Predicted data by increasing and decreasing the given charge,
incremented in steps of 1.021% of nominal charge.
CAUTION: Figures exceed maximum and minimum recommended loads !

Step Fill. Charge Vel. Energy Pmax Pmuz Prop.Burnt B_Time
% % Grains fps ft.lbs psi psi % ms

-10.2 91 44.00 2598 1948 43170 11263 93.9 1.289
-09.2 93 44.50 2628 1993 44606 11409 94.4 1.269
-08.2 94 45.00 2658 2039 46078 11551 94.9 1.250
-07.1 95 45.50 2687 2085 47626 11690 95.4 1.231
-06.1 96 46.00 2717 2132 49210 11826 95.8 1.212
-05.1 97 46.50 2747 2179 50859 11957 96.2 1.193
-04.1 98 47.00 2777 2227 52562 12085 96.6 1.175
-03.1 99 47.50 2807 2275 54326 12209 97.0 1.157 ! Near Maximum !
-02.0 100 48.00 2837 2324 56153 12328 97.4 1.140 ! Near Maximum !
-01.0 101 48.50 2867 2373 58040 12443 97.7 1.123 ! Near Maximum !
+00.0 102 49.00 2897 2423 59988 12553 98.0 1.106 ! Near Maximum !
+01.0 103 49.50 2927 2473 61997 12659 98.3 1.089 ! Near Maximum !
+02.0 104 50.00 2957 2524 64075 12760 98.6 1.073 !DANGEROUS LOAD-DO NOT USE!
+03.1 105 50.50 2987 2575 66227 12856 98.9 1.057 !DANGEROUS LOAD-DO NOT USE!
+04.1 106 51.00 3017 2627 68457 12946 99.1 1.042 !DANGEROUS LOAD-DO NOT USE!
+05.1 107 51.50 3047 2679 70767 13032 99.3 1.026 !DANGEROUS LOAD-DO NOT USE!

Results caused by ± 10% powder lot-to-lot burning rate variation using nominal charge
Data for burning rate increased by 10% relative to nominal value:
+Ba 102 49.00 3033 2655 71477 12366 100.0 1.026 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 102 49.00 2716 2130 48979 12098 91.9 1.210



Cartridge : 6.5 x 55 Swedish
Bullet : .264, 130, Swift Scirocco
Useable Case Capaci: 52.180 grain H2O = 3.388 cm³
Cartridge O.A.L. L6: 3.150 inch = 80.01 mm
Barrel Length : 22.0 inch = 558.8 mm
Powder : Hodgdon H4831

Predicted data by increasing and decreasing the given charge,
incremented in steps of 1.0% of nominal charge.
CAUTION: Figures exceed maximum and minimum recommended loads !

Step Fill. Charge Vel. Energy Pmax Pmuz Prop.Burnt B_Time
% % Grains fps ft.lbs psi psi % ms

-10.0 96 45.00 2554 1883 42356 10882 90.8 1.297
-09.0 97 45.50 2584 1928 43796 11034 91.4 1.277
-08.0 98 46.00 2615 1973 45290 11184 91.9 1.257
-07.0 99 46.50 2645 2020 46842 11330 92.5 1.237
-06.0 101 47.00 2676 2067 48449 11474 93.0 1.217
-05.0 102 47.50 2707 2115 50119 11614 93.6 1.198
-04.0 103 48.00 2738 2164 51852 11751 94.1 1.179
-03.0 104 48.50 2769 2213 53652 11884 94.6 1.161 ! Near Maximum !
-02.0 105 49.00 2800 2263 55523 12014 95.1 1.143 ! Near Maximum !
-01.0 106 49.50 2831 2313 57467 12139 95.5 1.125 ! Near Maximum !
+00.0 107 50.00 2862 2364 59487 12261 95.9 1.107 ! Near Maximum !
+01.0 108 50.50 2893 2416 61588 12378 96.4 1.090 ! Near Maximum !
+02.0 109 51.00 2924 2469 63775 12491 96.8 1.072 !DANGEROUS LOAD-DO NOT USE!
+03.0 110 51.50 2956 2522 66053 12600 97.1 1.056 !DANGEROUS LOAD-DO NOT USE!
+04.0 111 52.00 2987 2576 68413 12703 97.5 1.039 !DANGEROUS LOAD-DO NOT USE!
+05.0 112 52.50 3019 2630 70892 12802 97.8 1.023 !DANGEROUS LOAD-DO NOT USE!

Results caused by ± 10% powder lot-to-lot burning rate variation using nominal charge
Data for burning rate increased by 10% relative to nominal value:
+Ba 107 50.00 3011 2617 71281 12330 99.6 1.025 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 107 50.00 2671 2059 48669 11597 88.5 1.212


Cartridge : 6.5 x 55 Swedish
Bullet : .264, 130, Swift Scirocco
Useable Case Capaci: 52.180 grain H2O = 3.388 cm³
Cartridge O.A.L. L6: 3.150 inch = 80.01 mm
Barrel Length : 22.0 inch = 558.8 mm
Powder : IMR 4350

Predicted data by increasing and decreasing the given charge,
incremented in steps of 1.064% of nominal charge.
CAUTION: Figures exceed maximum and minimum recommended loads !

Step Fill. Charge Vel. Energy Pmax Pmuz Prop.Burnt B_Time
% % Grains fps ft.lbs psi psi % ms

-10.6 88 42.00 2574 1913 44781 10532 95.8 1.275
-09.6 89 42.50 2603 1956 46245 10660 96.2 1.256
-08.5 90 43.00 2632 2000 47755 10785 96.6 1.237
-07.4 91 43.50 2661 2044 49314 10907 97.0 1.218
-06.4 92 44.00 2690 2089 50923 11024 97.3 1.200
-05.3 93 44.50 2719 2134 52583 11139 97.7 1.182
-04.3 94 45.00 2748 2179 54298 11249 98.0 1.165 ! Near Maximum !
-03.2 95 45.50 2776 2225 56068 11355 98.3 1.148 ! Near Maximum !
-02.1 96 46.00 2805 2271 57896 11457 98.5 1.131 ! Near Maximum !
-01.1 97 46.50 2834 2318 59783 11554 98.8 1.114 ! Near Maximum !
+00.0 98 47.00 2862 2365 61733 11648 99.0 1.098 ! Near Maximum !
+01.1 99 47.50 2891 2412 63748 11737 99.2 1.082 !DANGEROUS LOAD-DO NOT USE!
+02.1 100 48.00 2919 2460 65830 11821 99.4 1.066 !DANGEROUS LOAD-DO NOT USE!
+03.2 101 48.50 2947 2508 67982 11900 99.5 1.051 !DANGEROUS LOAD-DO NOT USE!
+04.3 102 49.00 2976 2556 70207 11975 99.7 1.036 !DANGEROUS LOAD-DO NOT USE!
+05.3 103 49.50 3004 2605 72507 12044 99.8 1.021 !DANGEROUS LOAD-DO NOT USE!

Results caused by ± 10% powder lot-to-lot burning rate variation using nominal charge
Data for burning rate increased by 10% relative to nominal value:
+Ba 98 47.00 2975 2556 72174 11353 100.0 1.025 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 98 47.00 2707 2115 51454 11422 94.2 1.192



Cartridge : 6.5 x 55 Swedish
Bullet : .264, 130, Swift Scirocco
Useable Case Capaci: 52.180 grain H2O = 3.388 cm³
Cartridge O.A.L. L6: 3.150 inch = 80.01 mm
Barrel Length : 22.0 inch = 558.8 mm
Powder : IMR 4831

Predicted data by increasing and decreasing the given charge,
incremented in steps of 1.064% of nominal charge.
CAUTION: Figures exceed maximum and minimum recommended loads !

Step Fill. Charge Vel. Energy Pmax Pmuz Prop.Burnt B_Time
% % Grains fps ft.lbs psi psi % ms

-10.6 91 42.00 2584 1927 43430 10735 98.6 1.312
-09.6 92 42.50 2613 1971 44909 10841 98.9 1.291
-08.5 93 43.00 2642 2015 46437 10941 99.1 1.271
-07.4 94 43.50 2671 2059 48015 11037 99.3 1.251
-06.4 96 44.00 2700 2104 49646 11127 99.5 1.231
-05.3 97 44.50 2729 2149 51332 11212 99.7 1.212
-04.3 98 45.00 2757 2195 53074 11291 99.8 1.193
-03.2 99 45.50 2786 2241 54874 11365 99.9 1.175 ! Near Maximum !
-02.1 100 46.00 2814 2287 56735 11433 100.0 1.157 ! Near Maximum !
-01.1 101 46.50 2843 2333 58660 11495 100.0 1.139 ! Near Maximum !
+00.0 102 47.00 2871 2379 60650 11552 100.0 1.122 ! Near Maximum !
+01.1 103 47.50 2899 2426 62708 11606 100.0 1.105 !DANGEROUS LOAD-DO NOT USE!
+02.1 104 48.00 2927 2473 64837 11659 100.0 1.088 !DANGEROUS LOAD-DO NOT USE!
+03.2 105 48.50 2955 2520 67040 11711 100.0 1.072 !DANGEROUS LOAD-DO NOT USE!
+04.3 106 49.00 2982 2568 69320 11762 100.0 1.056 !DANGEROUS LOAD-DO NOT USE!
+05.3 107 49.50 3010 2615 71681 11812 100.0 1.040 !DANGEROUS LOAD-DO NOT USE!

Results caused by ± 10% powder lot-to-lot burning rate variation using nominal charge
Data for burning rate increased by 10% relative to nominal value:
+Ba 102 47.00 2977 2557 72334 11114 100.0 1.041 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 102 47.00 2713 2125 49126 11731 97.4 1.230

beretzs,

Thanks for the information. Is this data from Quickloads?

Yes sir. Sure is.

With the Swift 53 grains might be pretty hot. With 130 Bergers I was getting flat primers at 52.5 in hot weather. Dropped back to 51 grains and still getting 2950+/- fps.

Berger tops out at 50.6 for the 135 elite.

I agree with that. My current lot of 26 is pretty quick. As always, work up from low until you know where you’re at with the data.

Beretzs

Please forgive my 'butchering' of your larger charts post. The following 'excerpt' compares quite well with my load.....

M 70, 22" bll, IMR 4350 ** 120 gr** N B T

Your chart shows:

"Cartridge : 6.5 x 55 Swedish
Bullet : .264, 130, Swift Scirocco
Useable Case Capaci: 52.180 grain H2O = 3.388 cm³
Cartridge O.A.L. L6: 3.150 inch = 80.01 mm
Barrel Length : 22.0 inch = 558.8 mm
Powder : IMR 4350

Predicted data by increasing and decreasing the given charge,
incremented in steps of 1.064% of nominal charge.
CAUTION: Figures exceed maximum and minimum recommended loads !

Step Fill. Charge Vel. Energy Pmax Pmuz Prop.Burnt B_Time
% % Grains fps ft.lbs psi psi % ms

.
.
.
-01.1 97 46.50 2834 2318 59783 11554 98.8 1.114 ! Near Maximum !
** +00.0 98 47.00 2862 2365 61733 11648 99.0 1.098 ! Near Maximum ! "

My load in my rifle is 49 grs yields 2987 fps with a 10 gr lighter bullet

We are using different rifles and components yet the results are 'comparatively' close.
I've shot the 'same' cases repeatedly, the case stretch is minimal, and primer pockets are tight.

THANK you for posting ALL that info.


Jerry

Sorry, I forgot. Recently I bought some Rl 26 but have not yet started testing it.
It'll be Spring before I do because my deer season starts in earnest Saturday.

Jerry