Home Forums Reloading Big Game Rifles 270 Win, Re 26, 160 Partitions

Anyone try this combo yet? My 150's NPT shoot really well with Re26 at 3050. Wondering about the 160. If you haven't tried it, have you run a Quickload on it?

Thanks.

Just started playing with Re26 in the 270 but below are some QL runs....150 partitions first then 160s.

Notes:

Barrel Length: 24-in.
COAL: 3.34-in.

_________________

Cartridge : .270 Win. (SAAMI)
Bullet : .277, 150, Nosler PART SP 16323
Useable Case Capaci: 60.130 grain H2O = 3.904 cm³
Cartridge O.A.L. L6: 3.340 inch = 84.84 mm
Barrel Length : 24.0 inch = 609.6 mm
Powder : Alliant Reloder-26

Predicted data by increasing and decreasing the given charge,
incremented in steps of 2.0% 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

-20.0 81 48.00 2367 1866 28493 10377 93.6 1.624
-18.0 83 49.20 2432 1971 30559 10706 94.9 1.580
-16.0 85 50.40 2498 2079 32790 11013 96.2 1.536
-14.0 87 51.60 2564 2190 35199 11295 97.2 1.494
-12.0 89 52.80 2630 2304 37805 11551 98.1 1.448
-10.0 91 54.00 2696 2421 40625 11777 98.8 1.399
-08.0 93 55.20 2762 2540 43683 11973 99.4 1.352
-06.0 95 56.40 2827 2662 46999 12136 99.8 1.307
-04.0 97 57.60 2892 2785 50602 12264 100.0 1.263
-02.0 99 58.80 2956 2910 54525 12359 100.0 1.221
+00.0 101 60.00 3020 3037 58798 12443 100.0 1.180 ! Near Maximum !
+02.0 103 61.20 3083 3165 63462 12523 100.0 1.141 ! Near Maximum !
+04.0 105 62.40 3145 3295 68559 12598 100.0 1.103 !DANGEROUS LOAD-DO NOT USE!
+06.0 107 63.60 3207 3427 74091 12667 100.0 1.067 !DANGEROUS LOAD-DO NOT USE!
+08.0 109 64.80 3269 3560 80114 12731 100.0 1.032 !DANGEROUS LOAD-DO NOT USE!
+10.0 111 66.00 3331 3696 86688 12789 100.0 0.998 !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 101 60.00 3156 3318 74503 11888 100.0 1.078 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 101 60.00 2808 2626 45503 12765 97.3 1.316



Cartridge : .270 Win. (SAAMI)
Bullet : .277, 160, Nosler PART SSP 16324
Useable Case Capaci: 59.367 grain H2O = 3.855 cm³
Cartridge O.A.L. L6: 3.340 inch = 84.84 mm
Barrel Length : 24.0 inch = 609.6 mm
Powder : Alliant Reloder-26

Predicted data by increasing and decreasing the given charge,
incremented in steps of 2.0% 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

-20.0 79 46.40 2287 1858 28111 10200 94.4 1.679
-18.0 81 47.56 2349 1960 30112 10511 95.7 1.635
-16.0 83 48.72 2411 2065 32269 10801 96.8 1.591
-14.0 85 49.88 2473 2173 34595 11067 97.7 1.548
-12.0 87 51.04 2536 2284 37104 11307 98.5 1.505
-10.0 89 52.20 2597 2397 39815 11519 99.1 1.455
-08.0 91 53.36 2659 2512 42746 11702 99.6 1.407
-06.0 93 54.52 2720 2629 45917 11854 99.9 1.361
-04.0 95 55.68 2781 2748 49355 11974 100.0 1.316
-02.0 97 56.84 2841 2868 53085 12071 100.0 1.273
+00.0 99 58.00 2901 2990 57132 12163 100.0 1.232 ! Near Maximum !
+02.0 101 59.16 2960 3113 61543 12250 100.0 1.192 ! Near Maximum !
+04.0 103 60.32 3019 3237 66308 12333 100.0 1.154 !DANGEROUS LOAD-DO NOT USE!
+06.0 104 61.48 3077 3363 71459 12411 100.0 1.117 !DANGEROUS LOAD-DO NOT USE!
+08.0 106 62.64 3135 3491 77045 12484 100.0 1.081 !DANGEROUS LOAD-DO NOT USE!
+10.0 108 63.80 3193 3621 83115 12552 100.0 1.047 !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 99 58.00 3029 3259 72178 11632 100.0 1.126 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 99 58.00 2703 2595 44185 12528 97.7 1.373

Yes,I've tried RL-26 and the 160 gr NP. I'm getting 2850 fps from a 22" barrel and good accuracy.

Thanks for the QL! Interestingly, my 24" Kimber gets 20-30 ft/sec more than the QL suggests at 60 grains - which is what I load. I may try the 160 NPT in my 270 to see how it shoots.

Thats pretty good. I should get handy to 2900 in my 24" Kimber.

Yup,or a little more.

Well shot my 22" LH Rem 700 270 Win today with 160 Nosler Part, RP case , CCI 200 primer 10 F Crono was cold old battery. So was the shooter !

58 GR RL 26 2877 FPS 160 GR NP 3 @ 2.47"

58.5 GR RL 26 2874 FPS ? 160 GR NP 3 @ 1.15"


59 Gr RL 26 3041 FPS 160 GR NP 4 @ 5" 2 separate groups

The 58.5 could have promise.

RL 26 is like RL 17 seems no traditional pressure signs till you are way over. A chrono is a must IMHO.

Shot different and slower loads today in my 270 Winchester and H 4831 showed more pressure 100 FPS slower.

Same rifle and bullets with, RL 26 loads easy bolt lift, primer looked normal and faster. Cases and primer pockets are holding up well.

Something's weird with your speeds. I guess why you have a question mark after the 2874?

Isn't it true that if you add powder but lose velocity you're over max?

So you lost 3 fps going from 58 to 58.5 but then gained 167 fps going up to 59? Seems like a huge increase for only a half grain of powder.

Are you sure the 2874 wasn't 2974?

I questioned the reading only shot 1 round, in each charge
barrel mounted chrono.

If it had read 2974 I would have stopped there!

(10 F Chrono was cold old battery. So was the shooter !)

kk, Curious if you have had a chance to do any more testing ? I just picked up some RL26. Thinking about playing with the same combination. Appreciate you posting up the data. Now I have an idea where to start... Thx...

QL data is based on the assumption R26 is slower than R25, it isn't in my experience. I would adjust the BA to the published Alliant loads for the 150 and see what you get. I bet it would drop the Maximum loads down by a grain or two. I am a fan of R26 but hope it doesn't turn out like some others where there wasn't much published data so it lead to a lot of hot rodding and some really high velocities. But the pressure tested loads do show some great velocities.

No more testing was about out of 160 GR NP but got some seconds coming.

This is were I'm headed. Got a hard copy of the Alliant 2017 load manual last week. RL26 came in this week. Poking around on Hodgdon website this morning, "looks like" most of the other slower burning powders (H4831, H1000, I7828, 780) all drop back 1 to 2 grains when stepping up from 150gr to 160gr bullets. Figured go to the starting loads for 150gr and work up from there. KK's empirical data appears to support that logic. Also helpful to know that I need to break out the chrony since the pressure signs do not show up until well over pressure.

2900 fps with a 160gr NPT out of a .270 should easily kill anything that I am likely to hunt. 3000 fps with a 150gr LRAB would be pretty slick as well.

Should work great. The only problem is it dulls the shine on the Rem 7 mag and WSMs. They will still out run the 270 but not as much as they used too.

After I burn up all my 52.0 grain IMR 4831 loads on hand (40) with the 160 NPT that'll be my 1st choice on a replacement powder. I'd expect a decent jump in velocity for sure.

That old loading sparked by the CCI 250 has been a favorite of mine for many years. What a great bullet!


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