Guys, I just got a brand new gen 4 Glock 21 a few days ago and I'm dying to try it out. I just came from L.L. Bean where I found two 50 round boxes of Pierce 230gr. FMJ .45 ACP ammo for $31.00 per box. It's made in the USA, uses cases that are headstamped "SPEER", and BRASS jacketed FMJ bullets. Anyone ever used this ammo before or ever seen brass jacketed bullets before? My question is, Can I safely shoot this ammo with it's brass jacketed bullets out of my gen 4 Glock 21? Any issues using brass bullets with Glock's polygonal rifling like there is with lead bullets?? There is no mention of brass jacketed bullets on Pierce's website. Can anyone confirm that they have seen factory loaded Pierce .45 ACP ammo loaded with brass jacked bullets? What's going on here?
