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Joined: Sep 2010
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Campfire Ranger
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Campfire Ranger
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Is this the part where "it's almost like a 7Mag"? Yeah,just 200 fps short. Everybody knows 200 is just a small % of 3200. (read sarcasm into that) Jerry
jwall- *** 3100 guy***
A Flat Trajectory is Never a Handicap
Speed is Trajectory's Friend !!
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Campfire Ranger
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Campfire Ranger
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And to think I used to give a schit....
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Campfire 'Bwana
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Campfire 'Bwana
Joined: Aug 2010
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And to think I used to give a schit.... You and me both...
I try to stick with the basics, they do so well. Nothing fancy mind you, just plain jane will get it done with style. You want to see an animal drop right now? Shoot him in the ear hole. BSA MAGA
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Joined: Sep 2010
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Campfire Ranger
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Campfire Ranger
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Guys I think you missed my point !!
Being sarcastic, I was 'minimizing' the inference that the 270 would be 'almost' equal to the 7 mag.
IOW - I was making fun of that thought.
IOW - I don't feel that way.
IOW - the 270 can NOT do what a 7 mag can.
Just for clarity. Gee Whiz.
Jerry
jwall- *** 3100 guy***
A Flat Trajectory is Never a Handicap
Speed is Trajectory's Friend !!
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Campfire Tracker
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Campfire Tracker
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My experience with RL 26 and 150 g. bullets in a bone stock Kimber Montana (24 inch barrel) is a little puzzling.
All were shot in PPU brass, WLR primers and the same lot of RL 26. Hazy to cloudy skies, temps in the 40-50 degree range, ProChrono chronograph. No missed shots by the chronograph in the testing.
Last fall with the 150 g. Hornady bullet; started at 57 grains of RL 26 working up in 0.5 grain increments with two shots at each increment: Charge Average Velocity in fps.
57.0 g. = 2886 57.5 g. = 2899 58.0 g. = 2921 58.5 g. = 2953 59.0 g. = 2993 59.5 g. = 2973 (not a typo) 60.0 g. = 2962 (also not a typo)
Then a total of 7 shots with the 60.0 g. load of RL 26 were chronographed in two different sessions a month apart. The average of them was 3044 fps.
This spring I repeated the same series only this time used the Nosler 150 g. partition bullet and started at 58 grains of RL 26.
Charge Average Velocity in fps.
58.0 g. = 3034 58.5 g. = 3058 59.0 g. = 3078 59.5 g. = 3123 60.0 g. = 3133
At the 59.5 g. and 60.0 g. pair one primer at each step had what appeared to be a slight primer leak, just a very small amount of black on the edge of a primer. The primer pockets on these cases after depriming appeared to be normal and new primers seated normally.
So I dropped the charge to 57.5 grains and a five shot average was 2945 fps. A week later shot another 5 shot test with 58.0 g. of RL26 and averaged 2973 fps. On the same day also fired two more with 57.5 g. of RL 26 and got 2963 fps for the two shots.
In other rifles I have been able to switch back and forth between Hornady and Partitions of the same weight and get very similar velocities and consistent performance.
John Barsness reports that Partitions often give higher pressures than cup-and-core bullets. For this rifle and bullet combination his observation is correct, even though it was out side of my previous - and admittedly limited - experience.
My results appear to vary from session to session even using what I consider to be identical loads. Some variation from shot to shot is typical but several shot averages show more difference from one session to another than experienced with other rifles.
Accuracy in my rifle is good, I've shot more than one 3 shot group at 100 yds that are under 1 inch. All shots (including some mild loads with 130 g. bullets) have flattened primers and the cases do not want to rechamber in the rifle without being resized. This is true of the PPU brass and WW brass I have tested. A fired case measured at the shoulder was 0.441". This is S.A.A.M.I. value given in my Nosler #6 Manual. I assume my Kimber has a minimum specification chamber. Consequently, I full-length resize cases for this rifle. After FL resizing the cases rechamber with just slight resistance
I will do more shooting but expect loads with the Partition bullet to be a couple of grains or so less than loads for other bullets.
A different 270 with a 23.6 inch barrel doing the same series with the 150 g. Partition bullet gave a two shot average of 3010 fps with WW brass, WLR primers and 60 g. of RL 26. I would check brass weight uniformity. If you have a wide variation in brass weight, that may account for some of the different velocities.
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Joined: Feb 2010
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Campfire Ranger
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Campfire Ranger
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Guys I think you missed my point !!
Being sarcastic, I was 'minimizing' the inference that the 270 would be 'almost' equal to the 7 mag.
IOW - I was making fun of that thought.
IOW - I don't feel that way.
IOW - the 270 can NOT do what a 7 mag can.
Just for clarity. Gee Whiz.
Jerry I totally disagree and have zero qualm squeezing the trigger on the same "something" with a 270 as I would a 7RM, at the distances I'm comfortable shooting. Which is why my 7mm is in the classifieds and I'm schlepping an old trusted M70 and factard ammo. Gave up trophy unicorn hunting.
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Campfire Ranger
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Campfire Ranger
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I have a very accurate Ruger #1 in .270, with 26" barrel. Might have to do some experimenting
"...the designer of the .270 Ingwe cartridge!..."
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Posts: 723
Campfire Regular
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Campfire Regular
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Thanks for the suggestion RBH; it slipped my mind to do that with this bunch of brass but I have done it with other cartridges. I will do that before shooting it again.
"It is wise, though, to remember above all else: rifle, caliber, scope, and even bullets notwithstanding, the most important feature of successful big game hunting is to put that bullet in the correct place, the first time!" John Jobson
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Campfire Outfitter
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Campfire Outfitter
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Kimber Montana CM 24" factory air temp 55 150 LRAB 58.5. 3058 59.0. 3062 59.5. 3091 60.0. 3106 60.5. 3128
Control Federal blue box 130 3079 Love that.
Your Every Liberal vote promotes Socialism and is an attack on the Second Amendment. You will suffer the consequences.
GOA,Idaho2AIAlliance,AmericanFirearmsAssociation,IdahoTrappersAssociation,FoundationForWildlifeManagement ID and MT.
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Campfire Tracker
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OP
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More R26 data from this evening...
24" CM Kimber 270 Win. 55* WW primer
145 ELDX 58.5 3105 140 NAB 59.0 3088, 59.5 3109 150 LRAB 58.3 3068
Control Fed Blue box 130 3070, 3035, 3054
Last edited by RinB; 04/25/17.
“Perfection is achieved not when there is nothing more to add, but when there is nothing left to take away”. Antoine de Saint-Exupery. Posted by Brad.
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Campfire Ranger
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Campfire Ranger
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That 145 ELDX load is an attention getter.
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Campfire Regular
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Campfire Regular
Joined: Nov 2015
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So is the Accubond... About 100fps shy of full WSM velocity. Probably would not bounce off an elk...
I've seen a Quickload output that guesstimates a 62 gr max for RL26 and 140 NABs, were you seeing obvious pressure at 59.5 gr?
Last edited by Gtscotty; 04/25/17.
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Campfire Ranger
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Campfire Ranger
Joined: Apr 2011
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Looks great Rick. When I get home I'll try some out of my 22" 270. I've got plenty of 26 to try.
That 140 Accubond looks pretty speedy as well.
Semper Fi
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Campfire Tracker
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There are no obvious pressure signs however the pressures must be pretty high given the velocities being generated. However my "control" using Federal ammo is about what I expect. I am going to work in the area of 58-58.5. I tried 58.3 and will fiddle with seating depth.
Last edited by RinB; 04/26/17.
“Perfection is achieved not when there is nothing more to add, but when there is nothing left to take away”. Antoine de Saint-Exupery. Posted by Brad.
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Campfire Tracker
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Campfire Tracker
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That looks really good, my local dealer is bringing in some 145 gr ELD-X and I'll ask him to bring in some RL 26. Have some 140 gr Accubonds, 150 gr Ballistic Tips, Solid Base, and Hot Cor's plus some 160 gr Partitions already. Your guys RL 26 results look awfully good.
Gerry.
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Campfire Tracker
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Just back from range: 71 degrees 150 Partitions
R26 58.0 3017, 3017, 3005 H4831sc 55.0 2790, 2789, 2808 Fed Classic 130 3076
The R26 load consistently gives around 3000. Have gone to 60.5 so 58.0 seems pretty good pressure wise. The numbers from the other loads shows that this rifle it not a weird-o.
Last edited by RinB; 05/03/17.
“Perfection is achieved not when there is nothing more to add, but when there is nothing left to take away”. Antoine de Saint-Exupery. Posted by Brad.
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Campfire Ranger
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Campfire Ranger
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Stone cold killa right there....
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Campfire Ranger
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Campfire Ranger
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Very Good Sir.
Ain't nuttin rong with 150s @ 3000 fps.
Impressive
Jerry
jwall- *** 3100 guy***
A Flat Trajectory is Never a Handicap
Speed is Trajectory's Friend !!
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Campfire Tracker
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Campfire Tracker
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Gotta say, I like this!
Last edited by Rug3; 05/27/17.
BE STRONG IN THE LORD, AND IN HIS MIGHTY POWER. ~ Ephesians 6:10
Socialism is a philosophy of failure, the creed of ignorance, and the gospel of envy, its inherent virtue is the equal sharing of misery. --Winston Churchill
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Campfire Ranger
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Campfire Ranger
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I am going to have to run some of the RL 26 with 150's thru my .270 Wby Magnum and see what t does.
Member: Clan of the Turdlike People.
Courage is Fear that has said its Prayers
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