With a 300 AAC BLACKOUT 20 inch barrel I pushed a 110 Sierra to 2720 fps before popping a primer. I backed it down to 2550 for the rest of my loads. I have not actually pressure tested it though.
Note: 300 Whisper(R) has a shorter throat and as such you typically would not get as much velocity as with 300 AAC BLACKOUT for any given amount of chamber pressure.
Wow. Must be some fast powder. With VV-N110, if I cram 17 grains in the case and crunch it down with the bullet, I get ~2200 fps out of my 18" bolt gun. You don't have to give out the exact load recipe, but where does this powder fall in the burn rate charts if you don't mind me asking?
-Dan
Wow. Must be some fast powder. With VV-N110, if I cram 17 grains in the case and crunch it down with the bullet, I get ~2200 fps out of my 18" bolt gun.
With the longer throat of the Blackout, the bullet travels further before it fully engages the rifling allowing for a easier pressure spike. Kinda like some of the Weatherby chambers from way back when. Or even like 5.56 chambers compared to 223 chambers.