270 WSM powder help

Pineman

Beginner
Dec 20, 2021
9
4
Long time reloader but 1st post. So with the powder shortage, I have these available to work up a load with for my Browning ABolt in 270 WSM with either 140G AB or PT. H4831sc, H4350, IMR 4350, IMR 4831 and RE22. I have the Nosler #6 manual but not the most recent. Just wondering what powder/s you would use to start with. Also, do you use Magnum Primers or just large rifle? The manual suggests WRLM but I have CCI, Fed and Rem Magnum primers as well. I have my favorite powders for 270 Win, 30-06 and 300WSM but looking for ideas. TIA.
 

DrMike

Ballistician
Nov 8, 2006
35,225
1,792
Welcome aboard. Good to see your post.

Though there are better choices to be made given the parameters you list, any of the powders you list will work. You will get slightly better case fill with RE22 than with the other propellants listed. Velocities don't really differ enough to tilt the scale one way or another. While the magnum primers have slightly greater brisance, I've generally used large rifle primers in all my WSMs because of the shorter powder column. All have given good ignition in temperatures down to -40.
 

SJB358

Ballistician
Dec 24, 2006
31,355
656
Rl22 was the best thing going for my 270 WSM for years. I did switch to 26 a few years back but I wouldn’t shed a tear if I was saddled with 22 for the rifle. It’s always worked well and has been fast as well.
 

Pineman

Beginner
Dec 20, 2021
9
4
I don't have any info for Rl 22. Anybody have the minimum and maximum charge for 140g? Thanks
 

SJB358

Ballistician
Dec 24, 2006
31,355
656
270-WSM-140gr-version-9-0.jpg

I think you'll end up higher than 61 grains of it to get 3200, but it is a good place to start.
 

Pineman

Beginner
Dec 20, 2021
9
4
SJB: That is exactly what I needed. Thank You very much. Happy Holidays..
 

Big guns 77

Beginner
Mar 16, 2022
9
1
I don't know if you are still interested but I solely load magpro in my 270 WSM, from 130's to 150 ablr. Best accuracy and hits game hard, best there is in my not so humble opinion.
 

Pineman

Beginner
Dec 20, 2021
9
4
Thanks for the reply Big Guns. When I see some Mag Pro available somewhere, I will try it out.
 
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