17 Mach 4
A few years back I built a 17 Mach4 for a customer and he chronoed some loads with the [then new] Hornady 20 gr pills. He is getting a bit over 4000 fps and VERY sub MOA! I would expect about the same for the 17 gr and a bit faster. BTW it is a Shilen barrel ---1-10 twist and 22" long.
Aloha, Mark
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