rsilvers

No, but the UMC low-cost version will have one.

http://www.midwayusa.com/viewProduct/default.aspx?productNumber=680890 Redding dies are out.

Do a 200 yard zero.

Yes. 330 PF is.. Sierra 175 loaded to 2.245 OAL. Rem brass. Rem primers (7.5). A1680 powder, 20.0 grains. 1900 fps from 16 inch barrel. We have ammo like this commercially loaded and it is being tested by 3-gun shooters.

Western Powders finished their load data: http://www.silencertalk.com/forum/viewtopic.php?f=128&t=73990

I don't know what that can be. The brass is very strong - stronger than 223 brass, because it has 5.56mm-like case-head hardness. Also the primers are lightly crimped and sealed. The primers don't pop out even for 72,000 psi proof loads. What was your powder, powder charge, and OAL? Is your chamber a BLACKOUT chamber, or a Whisper® chamber?