Thinking of maybe getting a Famae 540-1. However I got tons of FMJ 55 grain 5.56 I need to use up. I can't seem to find the twist rate on this gun to see if 55 grain gives half decent results. Thanks for any info.
I know that much. I just want to make sure the 540 in 5.56 is a common twist rate.55 grain would work fine in any common twist rate.



























