300BlkTalk

I have been loading up some 300 blk with LC Brass and using some Sierra 168grain TMKs. I'm using CFEBLK powder. I know this bullet isn't "designed" for the 300BLK but I bought some a while back when bullets were scarce and think they should work. Also, at sub velocity levels I don't reall...

So out of curiosity I loaded some Xtreme brass with 13.0 grains. Seated to the same COAL as the 12.5 grain load. Shot a 5 shot group and speeds as follows, 1158, 1163, 1173, 1184, 1187. Not much better ES or SD. I also noticed several times that the speed would increase from the first shot to the la...

LC brass


Xtreme Brass

Ok so I took y’all’s advice and I loaded up 5 more at 12.5 grains and seated the bullet as far as I could. It still wasn’t quite compressed. I also had some Xtreme brass and I know those are thicker walled so I loaded 5 of those at 12.5 grains. I also measured from the end of the case to top of powd...

10.5” barrel with pistol length direct impingement system. Yeah I’m trying to not waste more components is why I’m posting. I guess I’m partly baffled why the ES is so great. I feel like my QC is pretty high. All the cases are prepped and trimmed to the same length. I haven’t seen this in other cali...

I have been loading up some 300 blk with LC Brass and using some Sierra 168grain TMKs. I'm using CFEBLK powder. I know this bullet isn't "designed" for the 300BLK but I bought some a while back when bullets were scarce and think they should work. Also, at sub velocity levels I don't really...

Thanks everyone for feedback and suggestions. Looks like I got a few things to check on. I am using a Leupold VX3 1.5-5x30 scope and Nikon P series rings. No issues in the mount. This is definitely sufficient for 50 yards, and I think it is ok for 100 yards. When you mention stable bullet that does ...

1:8 twist

Got a 300 blk 10.5” no name barrel on this upper from ESAD Arma. I am a good shot. Never had a gun shoot like this before. At 50 yards it was ok, but at 100 yards it was pretty far out there. I was shooting 175 grain advertised 1775 FPS and 220 grain advertised 980 FPS. Both HPBT. At 50 yards I had ...