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22 Cheetah Mk I

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12 August 2004, 03:39
sundog
22 Cheetah Mk I
Twist is 8 1/2. Already fire formed .243 cases and tested some Hdy 75 gr BTHP with very good results using H414.

What data I have found is for lighter bullets. Any experience out there using the heavier bullets? sundog
13 August 2004, 04:19
Bob Mehaffey
Sundog, I have a Mark II but heaviest I've shot is 50 gr. I make my cases from Rem 308 competition cases with the small rifle primer pocket.