I was wondering what grain and maker of .300 blackout is the best for accuracy?
speaking in generalities ....
very good accuracy is possible/probable for lightweight (110-130 gr) flat bottom bullets for supersonic rounds pushed near max speed.
I'm NOT saying that this would be the best hunting round (considering bullet construction), but the general consensus is that these qualities lead to good accuracy in 300BLK
I'll let someone else speak for subsonic
Why flat bases instead of boat tails?
Why flat bases instead of boat tails?
In simplistic terms, flat-based bullets have equal pressure exerted on them as they exit the crown of the muzzle. Any yaw in a bullet is accentuated by a boat-tail design. It's usually not too difficult to resolve this, with good loading techniques and quality bullets (reducing or eliminating yaw), but flat-based bullets are often the most accurate option for shorter distances.
That makes sense particularly since I am loading super using 110-155 grain bullets. I took a nice buck this year using a 155 gr A-MAX.
speaking in generalities ....
very good accuracy is possible/probable for lightweight (110-130 gr) flat bottom bullets for supersonic rounds pushed near max speed.
I'm NOT saying that this would be the best hunting round (considering bullet construction), but the general consensus is that these qualities lead to good accuracy in 300BLK
I'll let someone else speak for subsonic
I would have to agree. I am shooting 125's and maybe 150's. Both are flat based pushed near the upper end of the powder charge (IMR4227). Shot some nice groups out to 150 yards with very little drop. Hits like a sledge compared to the meek .223 on steel swinger targets.
Overall happy with the cartridge. Wish I could find a cheaper projectile than the SST's at $27 per hundred so I can actually shoot the thing. Hard to justify loading for when I can shoot the .223 for less than half the price. Be nice to trade it off now that I have shot it a few times to see what the fuss was about.
I just started shooting my 300 again. I've shot it a little in the past and took it to Wabash gun range north of Delphi somewhere. Kinda thought I heard a banjo playing... I was able to shoot satisfactorily on their steel targets (We were really there for a couple of bolt guns) all the way out to the 700 yard line. I'm just now really putting it on paper and I'm sort of embarrassed. I know I don't usually exhibit the sort of patience needed to really shrink group sizes, but I couldn't get anything better than 2" at 100yds. So far it's all factory ammo. I've got a small sampling of brands/weights/etc/super/sub/etc. I've also got a standard mil-spec trigger on it. Again, that hasn't been this detrimental to accuracy in the past, that I recall. It's a BCM 10.5 upper. I was shooting prone off a bipod and a sandbag under the stock. Even worse, yesterday I sighted it in at 100 (if you can say 2" is sighted in) and today went to the range and put up a bunch of small targets to shoot "groups." After the smoke cleared and I was 40 rounds lighter I didn't have crap to show for myself on the paper.
What sort of accuracy should I expect?
Hog- what ammo are you shooting? When we started with 300BO years ago, before reloading, I found that factory Remington 125's (IIRC) were terrible.
IMO, You should definately be able to get under 2" with a 10.5" but again IMO its going to be load related.
I just started shooting my 300 again. I've shot it a little in the past and took it to Wabash gun range north of Delphi somewhere. Kinda thought I heard a banjo playing... I was able to shoot satisfactorily on their steel targets (We were really there for a couple of bolt guns) all the way out to the 700 yard line. I'm just now really putting it on paper and I'm sort of embarrassed. I know I don't usually exhibit the sort of patience needed to really shrink group sizes, but I couldn't get anything better than 2" at 100yds. So far it's all factory ammo. I've got a small sampling of brands/weights/etc/super/sub/etc. I've also got a standard mil-spec trigger on it. Again, that hasn't been this detrimental to accuracy in the past, that I recall. It's a BCM 10.5 upper. I was shooting prone off a bipod and a sandbag under the stock. Even worse, yesterday I sighted it in at 100 (if you can say 2" is sighted in) and today went to the range and put up a bunch of small targets to shoot "groups." After the smoke cleared and I was 40 rounds lighter I didn't have crap to show for myself on the paper.
What sort of accuracy should I expect?