257Blackjack
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I’ve had a 10 twist 257 AI for ten years. Accuracy to 500 has been mediocre at worst to inconsistent at best using various combinations of components, but generally ending by focusing on Hodgdon’s 4350 & 4831 and 100 grain SMKs.
I have followed these developments with interest. Perhaps I’ll go with another .25 caliber barrel (in .257 AI) rather than a 6.5 or 7mm. I’d love to be able to try higher BC bullets.
Please do - I would love to see what FPS and accuracy yields you see.
What freebore and leade angle is your reamer?
We have plenty of blanks arriving in the coming weeks.