19-04-2014, 01:46 AM
(This post was last modified: 19-04-2014, 02:12 AM by Drew Phipps.)
Bob Prudhomme Wrote:The only way to tell if this rifle has standard twist rifling or cut down progressive twist rifling is to do a sulphur cast of the inside of the barrel at the muzzle.
Think they would lend us C2766 for the weekend?
I think that Frazier did a sulphur cast. Let me see if I can find an image of that.
Yep. CE 540.
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The cast starts at the throat, right? I'm no expert, but I'm guessing thats not a progressive twist.
IIRC Frazier testified that the rifle was 7.35 rebored for 6.5mm. Does that help us in any way, assuming he's telling the truth?