Professional Soldiers ® - like to talk black powder cartridre loading

Quote:

Originally Posted by Blitzzz (Post 241156)

in 308 I use the 175 gr Seirra HPBT and RL 15. I think I'm going to try 4831, it seems interesting. At @2750fps the 15HPBT is transonic to 1200 meters very do able. The 168gr Match is only transonic to 1000 meters. , blitzzz

I think you mean supersonic.

Aircraft and projectiles are transonic within a narrow range above and below Mach 1.

The loads you mention are transonic only at the point they are transitioning to subsonic flight. Prior to that, they are supersonic during their flight.

TR