HOLY DIVER
Member
trying 2 figure out why my BCM mid length is short stroking the load is 21.6 grains of imr4198 55fmj bt thats not an underpowered load i don't think? its what i allways loaded for my AR'S kinda lost not sure what the problem is
anyway i took the bolt down......3 of the gas rings were perfectly lined up i'm almost %100 sure i off sett them last time i cleaned it
If a BCM truly can't handle a little extra gunk from steel case then you'd better rip those fine letters off the receiver. I shoot it all the time in my two ARs. I'm sure most of us have read the story of Pat Rogers' Filthy 14 BCM. For those who haven't it's an eyeopener.well upon closer inspection i think i know what gummed it up inside the bcg was full of unburnt powder last time i shot it i figured i'd get rid of some steel cased stuff i had. the unburnt powder and tetra gun lube mixed together and made a gummy mess also felt very gritty. i just got done doing a very extensive clean and relubed with slip2000 and trust me i'll never ever shot that crap in my rifle again