Re: 338 AX XP-100 with 300 SMK's
Thats interesting, the hottest velocity that is listed on the Hodgdons web page for a 300 gr SMK out of a 338 Lapua RIFLE was 2677 fps with US869. Just think you will match that or exceed that with a handgun length barrel, not to bad at all!!!
Keep us posted with your results.
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