Supersonic accuracy loads
 

Anyone out there willing to share their accuracy/hunting loads with me? I'm playing with 1-8 and 1-10 twist in both 11" suppressed and 16" non-suppressed with a 300AAC chamber.

My bolt and AR both have 16" barrels and both shoot 125gr Nosler BT over 18.0 gr 4227 very well.

What's your OAL ? I have found OAL to be critical with the 300AAC/Whisper/300/221

So far I'm having best results with the following:

Sierra 125gr PH, 18gr H110, 2.060" OAL
Nosler 125gr BT, 18gr H110, 2.160" OAL
Barnes 130gr TTSX, 18gr H110, 2.160"

I'm using 2.050" with the 125 NBT and the seirra 125 spitzer.

Best results for me have been with the 125gn Nosler Ballistic Tip and 17.5 gns of N-110.

Out of my 16.125 inch bolt gun they are going about 1980 fps with single digit ES/SD.

It is a hammer on coyotes and very quiet even though I am using a SF 338 suppressor and not a 308 suppressor.

I have had better luck with N-110 over H-110 in all instances. Not sure why, but I have the H-110 pushed to the back of the shelf. I will use it up with some plinking loads. I am thinking that anything H110 can do, Lil Gun might do it better (This was my experience in 22 Hornet as well). Seemed to be more consistent and less sensitive to temp.

When I get back to loading Sonic 300 loads I am going to go to Lil Gun first to compare with my older H110 loads.

Blake

Are you using a Whisper or 300 BLACKOUT chamber?