Greetings all! I just posted this a little while ago and it disappeared... Sorry, in advance, if this ends up duplicating the post.
I am an experienced reloader having rolled my own ammo for over 20 years. I have loaded 300 BLK subsonic/supersonic for carbine length ARs for five years - with very good results.
Last May I purchased a SIG Sauer Rattler with an 8" barrel. I have only shot the pistol a few times as I was waiting for my tax stamp for a suppressor. After nine months I finally picked up my suppressor last Wednesday. Taking it to the range with 208gr HPBT reloads, which worked for my 16" barreled AR, provided quiet shots, but they are obviously too under-powered to cycle the pistol. I have tons of new reloading guides from Hodgdon, Speer, Hornady and Lyman. Unfortunately, none of the manuals provide a starting point for an 8" AR 300 BLK. Where does one even begin?
The carbine length subsonic recipe for the AR is:
208gr Hornady BTHP
8.1gr Vihta Vuori N110
Remington 5 1/2 small rifle primer
New Starline brass
COAL 2.250"
I also have Hodgdon H110 which works well for the carbine. Accurate 1680 seems to be the most popular powder, but burn rates for the H110/N110 seem similar to 1680. Has anyone worked up subsonic loads for 8" 300 BLK with either of the powders I have?
Mike
Clarksville, TN
I am an experienced reloader having rolled my own ammo for over 20 years. I have loaded 300 BLK subsonic/supersonic for carbine length ARs for five years - with very good results.
Last May I purchased a SIG Sauer Rattler with an 8" barrel. I have only shot the pistol a few times as I was waiting for my tax stamp for a suppressor. After nine months I finally picked up my suppressor last Wednesday. Taking it to the range with 208gr HPBT reloads, which worked for my 16" barreled AR, provided quiet shots, but they are obviously too under-powered to cycle the pistol. I have tons of new reloading guides from Hodgdon, Speer, Hornady and Lyman. Unfortunately, none of the manuals provide a starting point for an 8" AR 300 BLK. Where does one even begin?
The carbine length subsonic recipe for the AR is:
208gr Hornady BTHP
8.1gr Vihta Vuori N110
Remington 5 1/2 small rifle primer
New Starline brass
COAL 2.250"
I also have Hodgdon H110 which works well for the carbine. Accurate 1680 seems to be the most popular powder, but burn rates for the H110/N110 seem similar to 1680. Has anyone worked up subsonic loads for 8" 300 BLK with either of the powders I have?
Mike
Clarksville, TN