RRA Varmint A4

slimjim · Posted: Sat Sep 18, 2010 8:31 am Post subject: Re: RRA Varmint A4

Dawgdad wrote:

I have a .223 WOA varmint upper

Dawgdad, thanks for sharing. You inspired me to get a 24-inch WOA varmit barrel. I'm having it fluted and will mate it to a Alexander Arms upper receiver with a side charge handle. Now I have to pick a freefloat tube!

44marty · Posted: Sat Sep 18, 2010 1:28 pm Post subject: Re: RRA Varmint A4

Suzanne wrote:

DawgDad!! I think that clears up a problem with the Swiss Schmidt Rubin k-31. I think it had a secant ogive bullet design. I've never seen any GP-11 ammo that it was designed to use but when I started reloading for it, using the published data on OAL, I found there was no way the round would chamber, it was always way too long. The tangent ogive bullets I am using won't chamber (bolt won't close) because the shape isn't right. When I seat a bullet into the brass I have to seat it well past the crimp on the bullet. Thanks to the article you submitted and another I found HERE I have a better understanding of why I need to find a secant ogive bullet to properly fit the chamber. It's funny no one seems to mention this in the Swiss forum I'm on, but they do mention that the GP-11 ammo is the most accurate to use in the rifle. Well DuH!! because, it fits the chamber! I'm gonna havta razz some people over there.....

Thanks Dawg

Suz

Suz, You may want to try Speer 165gr BTSP bullets. They feed from the magazine, chamber well and are very accurate with IMR4064 powder.

EDIT: Speer #2034