I like 175 gn SMK. Still super quiet and never had a keyhole even at 75 yards, THE 220gr would key hole at 20 yards
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300 acc reload
- Thread starter KingMickey
- Start date
what twist/length barrel?
10 inch ballistics adv barrel 1/7
Mine is 1:5 twist with a 5.5 barrel and suppressor on it. Shooting 25 yards tight grouping and 50. Was dinging steel at 100
I just started playing with the 300bo in a 7" 1:5 twist barrel with the 220 gr Berrys. I've been testing 1680, CFE BLK, H110, and Shooters World Blackout.
So far I've kind of ruled out CFE BLK and H110. Both of them I was getting close to super speed (1050) but still having issues with locking back on last round unsuppressed. My goal was to have ammo that would run with and without a can (only subs, no interest in shooting supers).
1680 I am around 11-12gr, Blackout around 10-11gr. H110 i was around 9-10gr but that was getting me close to 1050fps. I don't remember CFE load but it was over 1000fps as well. the 1680 and Blackout I am still around 850-900fps and think I'm close to where I want to be with regards to the action.
I"m playing a little bit with the spring and buffer (A5 H1/2 and green sprinco spring I think) and just checked my adjustable gas block to make sure it was all the way open.
My plan is to cast 247gr bullets and powder coat them and run those most of the time, and possibly some Maker 220gr subs if I want to hunt or use it for SD.
So far I've kind of ruled out CFE BLK and H110. Both of them I was getting close to super speed (1050) but still having issues with locking back on last round unsuppressed. My goal was to have ammo that would run with and without a can (only subs, no interest in shooting supers).
1680 I am around 11-12gr, Blackout around 10-11gr. H110 i was around 9-10gr but that was getting me close to 1050fps. I don't remember CFE load but it was over 1000fps as well. the 1680 and Blackout I am still around 850-900fps and think I'm close to where I want to be with regards to the action.
I"m playing a little bit with the spring and buffer (A5 H1/2 and green sprinco spring I think) and just checked my adjustable gas block to make sure it was all the way open.
My plan is to cast 247gr bullets and powder coat them and run those most of the time, and possibly some Maker 220gr subs if I want to hunt or use it for SD.
Lehigh Defense makes a 194gr Maximum expansion that works great for 300BLK. Also check out the 115gr Controlled Chaos. Both have shot well for me and they have load data on the website.
