Unsure. The FA has a relatively slow twist.

by John K., Tuesday, October 20, 2020, 22:59 (1255 days ago) @ ERSisk

I have a 380gr mould that was made for a longer cylinder 5-shot Ruger. Using shortened brass to allow the crimp groove to work with the shorter FA cylinder, it stabilizes at 1400fps but I have not driven it slower.


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