Thread: Subsonic projectiles, where are we at these days?

Originally Posted by Finnwolf

Is it still sub sonic with 8.5 g of Trailboss?

I’ve got a load of 4.6g with 150gr in 7.62x39 that’s sub sonic but maybe I could use a faster load and still be silent?

yip.....try up to 6 grns......without using a chronicgraph its only your ears that will tell the point of breaking sound barrier. DONT use magnum primers.