Running 190 SubX supersonic.

J

Jerryrigged

Active member
Since I already have a very quiet sub load for my bolt gun, decided to try the 190 SubX slightly faster in a 300 Blackout AR, for woods/tight cover use. Figured since will have noise from port pop anyway, let's make it slightly supersonic. If the SubX is designed to reliably open @ 900-1100fps, bet it will be very effective above 1300. Long story short, am now running them at 1525, groups are under 1 inch, have been hard hitting on the 2 coyotes so far, at 130 & 150 yds. Have yet to shoot any at the intended 50-75 yds for this rifle.
 
Are they explosive? I have them as my prefered hush hush round in a 300blk, but thought of putting a few thru my 300wsm to see what it would do...
 
Have not cut any open to check damage, both had 1-2" exits. 1 was sitting down-bullet entered left side of chest, through shoulder, exited left side of back next to spine. Other was through both upper shoulders L to R. I'm thinking the front blows up kinda like a Vmax, then the lump of the base continues to plow through. I was curious to see if they would just be a 190 grenade on impact at 150% of their designed velocity.
 
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