I usually just blast supersonic out of it but I think it was also subsonic with my reloads. That gets me right about 1K fps on my ~9" 3 lugged full size UZI SMG barrel which is the longest 9mm barrel I run.actually as I type this I just remembered that I also have the belt fed FM9 11" barrel. Please help: Have an AR9 Lower from 5D Tactical need help with a quality/reliable AR9 build that I want to run 70 Supressed / 30 Un-Supressed (CMMG Banshee upper or just RDB Kit vs Maxim Roller Delayed Buffer System vs Regular Direct Blowback) 1 / 3. 3.7 Gr of Titegroup over a jacketed projectile. Probably should be leery of any ammo that is bulging brass.Īs mentioned on other threads, I reload my 147Gr a little over max charge. That stuff would occasionally crack but the brass would be bulged as well as it was so hot. The one exception I can think of for really hot 9mm 147 GR JRN is some stuff that came in a light blue box by FNM. Being so hot down here makes a difference. Using the innovative MkGs platform, this BANSHEE SBR is made to accept the 9mm double stack Glock-pattern magazines. If you run ball 147Gr, I'm pretty confident it will not happen.in FL that is. I occasionaly fire some factory 147Gr and I've only rarely heard any cracking out of the full size UZI and that was with some +P HP stuff. If you want the best an AR has to offer, then the 300 Series is your choice. That gets me right about 1K fps on my ~9" 3 lugged full size UZI SMG barrel which is the longest 9mm barrel I run.actually as I type this I just remembered that I also have the belt fed FM9 11" barrel. View QuoteAs mentioned on other threads, I reload my 147Gr a little over max charge.
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