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Subsonic handloads for 300 Blackout

Re: Subsonic handloads for 300 Blackout

I have tried the sub loads and the super sonic, which the ladder are more cost effective and the noise signature is still low.

125gn sierra spitzer over 18.8gn of H-110. O.A.L. of 1.520 ,under an inch at 100
 
Re: Subsonic handloads for 300 Blackout

I tried the 240gr SMKs in two different 1 in 8 barrels. They would not stabilize enough in either of my barrels for decent accuracy. I never tried any other bullets that heavy.
 
Re: Subsonic handloads for 300 Blackout

I use 9.0 grains of lil-gun under the sierra 240's. Shoot it in a remmy 700 with a 18 inch Shilen select barrel. 9.0 is right on the sonic/subsonic range.