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Going from Lapua brass to Win brass .308

One_Man

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Jul 6, 2009
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Selma, Texas
I use 43.0gr RE-15 in Lapua brass with 178gr A-Max. I got some BHA brass I want to load. How much should I up the charge to compensate for extra case capacity of the Win/BHA brass? I was thinking 0.5% which would put it at 43.2 - 43.3 does that sound reasonable?
 
Re: Going from Lapua brass to Win brass .308

It's useful to know that a particular load works well in other people's rifles, but you need to work up to it anyway because the case volume is determined also by the chamber size.
 
Re: Going from Lapua brass to Win brass .308

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: RJ Hunter</div><div class="ubbcode-body">Use published loads and work it up yourself. What's with all the short cuts? </div></div>

Most excellent!

Change a variable in rifle loads you work the load up again. There is no "Conversion Factor" to go by.

BHA brass is Win Brass, hit the Hodgdon web site as their data is based on WW brass.
 
Re: Going from Lapua brass to Win brass .308

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: vman</div><div class="ubbcode-body">Do a little rough development near your current starting point, to either side of 43.0 and see how it pans out </div></div>
1+. You don't have to work up the load again, but should try a little bit on either side of your current node. It's a 308 so it's a bit more forgiven than say a 50 BMG.