Have a WSM donor. What to build?

Buck3

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Joined
Dec 11, 2016
Messages
172
Location
near Port Angeles, WA
Alright. I keep going back and forth on 270wsm and a 300wsm. The rifle will be a primary elk rifle and a backup mule deer gun. I have had a 270wsm before and was happy with it, I've had the same experience with a 300wsm though. I am unsure what the coal is in the Win action or if it's long enough to take advantage of the higher bc bullets in the 270wsm. I am hoping to end up around 7lbs bare when I'm done. I would like to stick to a cartridge that I can buy off the shelf.

So far i have a stainless Win 70 WSM action, and McMillan HTG edge stock. The barrel will most likely be a proof sendero lite.
 

ramrod79

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Joined
Nov 24, 2012
Messages
692
Location
Alberta Canada
Go with a Sherman Short Mag they will put preform both using SAUM brass so you should have enough room for long projectiles.
 

MAGA

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Joined
Jul 30, 2017
Messages
98
300 WSM with a 180-200gr bullet will be your ticket.
 

Canhunter35

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Jun 13, 2017
Messages
2,865
What twist and barrel length for:
300wsm? 1:10 at 23"?
270wsm? 1:8 or 1:9 at 24"?
6.5prc? 1:7.7 or 1:8 at 23"?
I’d go for the faster twist on the 6.5 and 270, and 24” on both. The smaller the bore the less efficient powder burn.
 

coop2564

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Joined
Jan 6, 2015
Messages
619
Location
Texas
I would do the 300wsm. 7ss would be to risky for me if plane loses ammo or some other ammo issue arose on a hunt.
 

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