Brass reloading question

live2huntelk

Member
Joined
Oct 29, 2017
Messages
19
Location
Ohio
I have 3x fired 300 WM Winchester brass that I have loaded and fired in my Remington 700 Sendero SFII. I use a Redding competition full body die when prepping the brass. I recently purchased a used Rbros 300WM. My question is, should I get unfired Winchester brass and shoot/fire form for the Rbros rifle or can I just use the brass I used in my Sendero. The one thing I would check is the shoulder bump when prepping the brass for the Rbros vs the Sendero. Is there other considerations/concerns of using brass fired in a different rifle?
 

Remmy700

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Joined
Aug 27, 2011
Messages
5,091
Location
Rio Rancho, New Mexico
I would think as long as the reamer used for your new build is a no turn Neck u should be fine. I would throw a piece of your brass in it and feel how the bolt closes. Depending on chamber dimension differences u will either be fine and just fire your current brass basically fire forming it to the new rifle or B u won’t be able to close the bolt on your current brass and will have to bump shoulder back a little at a time until bolt closes to your desired pressure
 

ShtrRdy

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Joined
Jan 14, 2012
Messages
3,380
Location
High Plains
I have two 300 win mags. One I use for hunting and one I use for long range shooting. I keep separate brass for the two different loads.
 

dok7mm

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Joined
Apr 13, 2015
Messages
1,924
Location
west texas
I would get separate set of brass. I'm really liking the ADG 300wm brass. Very high quality and I paid $60 per hundred. My lot had .014" neck thickness, all around and had only 2.5 gr difference, from lightest to heaviest on 200 cases.
 

243winxb

Well-Known Member
Joined
Sep 9, 2016
Messages
567
Location
USA
There are areas near the case belt that doesnt get sized.

Keep separate brass for the two different rifles.
 

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