Anyone experiencing FTF's with Federal LR ammo? I bought several 325 round boxes of "match grade" and 3 550 round boxes of standard LR HP on sale. Running this ammo through a S&W 2206. Ten % fail to fire, sometimes when I rotate them in magazine they work on 2nd try, sometimes not. I sent some back to Federal, they said my firing pin wasn't denting the rim enough to cause reliable ignition per their specs. I thought there could be gunk in the firing pin spring and / or pin channel, tore it down and cleaned everything, same problem. Then replaced firing pin, firing pin and hammer springs, still the same problem.
Solved the problem with a 1750 round bucket of Remington LR HP ammo. Not one FTF after 350 rounds.