Does your 22N brass have a square/sharp rim or does it look like the pics on-line with a bevel on the base (and every other AR case I've seen)?The 22 Nosler brass I received looks nothing like the 6.8 brass they made after purchasing SSA. This stuff looks good but I havent had time to see how long it lasts with high pressure loads. Time will tell...hope it's tough.
I can't post pics yet but it seems the square edge is shaving brass and collecting on the bolt face.
I'm shooting the 77gr factory stuff, gas off, single load from a sled.
Bought a few boxes from Midway when it was on 'Clearance'.
The next day the price went up.
Got 3037fps avg from your 20" barrel.
Which I'm very very happy with.