bun Posted August 9, 2019 Share Posted August 9, 2019 I recently installed a semi fit apex 5" barrel on my m&p 9L My go to load is a 145gr acme bullet 1.12 oal with no issues on my other 9s including the orig m&p barrel The same load is tight in the apex 5" barrel and doesn't drop freely. tried to shoot 100 rounds and had 5 failure to eject and failure to go into battery. when I shorten the oal to 1.0 (which I don't want to do) it passes the plunk test No issues with the plated 147gr xtreme at 1.12 -1.14 oal or factory rounds (blazer 115, winchester, freedom munitions) I know this has to do with bullet shape but what bullet do you guys use in your apex 5" ? Link to comment Share on other sites More sharing options...
Helios Posted August 15, 2019 Share Posted August 15, 2019 I use the 135gr TC from Blue Bullets loaded out to 1.14” in my Apex barrel’d M&P. The TC profile seems pretty forgiving with short throats. Link to comment Share on other sites More sharing options...
kmanick Posted August 15, 2019 Share Posted August 15, 2019 Ibejihead 147 Link to comment Share on other sites More sharing options...
bun Posted August 15, 2019 Author Share Posted August 15, 2019 I have thousands of acme 145s and I would have wanted it to work with my usual oal at 1.13. max oal I've tested was 1.09 I'll try the Ibejihead 147 and BB 135gr TC when I get a chance but for now I'll stick with the xtremes Link to comment Share on other sites More sharing options...
BJB Posted August 15, 2019 Share Posted August 15, 2019 18 minutes ago, bun said: I have thousands of acme 145s and I would have wanted it to work with my usual oal at 1.13. max oal I've tested was 1.09 Just have your leade throated. Link to comment Share on other sites More sharing options...
GlockCanMan Posted August 17, 2019 Share Posted August 17, 2019 Bayou bullets 147gr. bullets should give you a little more play room. Link to comment Share on other sites More sharing options...
MemphisMechanic Posted August 17, 2019 Share Posted August 17, 2019 I reamed the SDI barrel in my old M&P to take 147s out to 1.155” My load at 1.130” (for all my guns) grouped nice and tight after it was throated. I highly suggest sending the barrel to someone to get it cut for longer ammo, as the APEX barrels have short chambers. Several vendors can do it for you - Patriot Defense would be my recommendation. Hell, I could do it if you like, but most people prefer sending a barrel to a known company. Link to comment Share on other sites More sharing options...
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