25 Sherman LA. Load data help?

Michael Hirschi

Michael Hirschi

Member
Joined
Nov 23, 2021
Messages
24
Location
Hurricane, Utah
I had an incredible friend build a 25 Sherman LA rifle for me. I am trying to build accurate and safe loads using IMR 7828 SSC, H4350, and Reloader 26 powders. I'm using bullets ranging from 100 gr to 135 gr. Anyone have some great recipes for this rifle? Thanks for your help. God Bless America 🙏🏼🙏🏼🙏🏼🇺🇸🇺🇸🇺🇸.
 
Last edited by a moderator:
280AI Peterson is the brass I started with in this photo, neck down and fire.
It was more available when I was searching.
IMG_7518.jpeg

After fire-forming the brass ended up .005 short of trim length.👌
 
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Phil Rizzo said:
Tell us about your build ! Barrel length?
It's a fantastic cartridge from what I've seen of mine, getting on the heels of 257wby using a lot less powder.
Click to expand...
Remington 700 LH action, 24" carbon Preferred Precision barrel, 7.5 twist, iota stock, NF Atacr scope, TriggerTech trigger, now the bad part. The operator (me). 👀
 
DUCKMAN11 said:
Lapua 30-06 brass will end up with short necks in a cartridge that won't hardly grow.
Click to expand...
.270 WIN/.280 REM (2.540") in Peterson brass is .046" longer than .30-06 (2.494"). I did this with my .30 Gibbs (similar to 300 Sherman - https://www.longrangehunting.com/threads/30-gibbs-is-finally-ready.242088/) before acquiring .30 Gibbs brass from Qual Cart.

I started with .35 Whelen, followed by .30-06, .270 Win, and .280 Rem before the .30 Gibbs from Qual Cart. I learned significantly in the process, which is a must in wildcatting.
 
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