Hey all, today I was at the range shooting my M&P sport. I have the 5r 1/8 twist version. I was shooting some 55 gr fmj tula ammo I bought earlier this year. I shot a full 30 rd magazine full of this stuff. I have never had trouble from it before but today it was keyholing like crazy. Just to make sure it wasn't my gun, I fired a full 30 rd mag full of quality brass reloads and all were within a 2" circle dead center of where I was aiming. Does anybody know why this is happening and what if anything I can do to alleviate this from occurring. I have a lot of tula and I like it for just plinking but I hope it all is not like this. Please no "Should've never bought Tula ammo" comments please.