View Full Version : 300 blackout: Gas Check vs. Plain Base, Powder coating extra speed?
wacki
05-29-2014, 01:58 PM
When casting molds what grain size / speed need a gas check? Does powder coating allow you to push the bullets harder while keeping plain base? What about smooth vs lube grooves?
Smoke4320
05-29-2014, 02:17 PM
wacky
I have been able to get to 1900 FPS accurately with PC'ed gas check bullets WITHOUT checks. .recovered bullets showed full coating no burn off at all
A plain base should be even better .. Just don't have plain base mold to try it..
Tried a Smooth sided 30 cal 230 gr bullet in the blackout got no leading at up to 1200 FPS accurately and 1600 FPS in a 308 accurately
trying to get one of the HP mold Mfgers to make a 150 Grn smooth sided HP mold ..Much like the Mil hec 312-159 just smooth sided
I think this combo would make a very accurate bullet
wacki
05-29-2014, 02:28 PM
Tried a Smooth sided 30 cal 230 gr bullet in the blackout got no leading at up to 1200 FPS accurately and 1600 FPS in a 308 accurately
Powder coated or not? Gas check? Plain base?
Smoke4320
05-29-2014, 02:55 PM
PC'ed Plain base 230 grn RN
Powered by vBulletin® Version 4.2.5 Copyright © 2024 vBulletin Solutions Inc. All rights reserved.