300 AAC BLACKOUT

**rsilvers** · 12-04-11, 02:37

Originally Posted by 200RNL

.30 110gr 2186 fps.....not that far from .30 Carbine

Only if you compare a 6 inch 300 BLK barrel to an 18 inch M1 Carbine barrel.

It is very, very far from an M1 carbine if they both have the same 18 inch barrels.

M1 carbine is 1990 fps from an 18 inch barrel with a 110 grain.

300 BLK is 2450 fps from an 18 inch barrel.

The M1 carbine would be 383 ft-lbs at 200 yards. The 300 BLK would have that energy at 525 yards - BC of the bullet is much higher.

**200RNL** · 12-04-11, 11:38

Originally Posted by rsilvers

Only if you compare a 6 inch 300 BLK barrel to an 18 inch M1 Carbine barrel.

It is very, very far from an M1 carbine if they both have the same 18 inch barrels.

That's true, I'm just thinking from the targets perspective. Whether it's a 9 or 18 inch barrel makes no difference to whoever is on the receiving end.

**rsilvers** · 12-04-11, 11:58

Yes, the target cannot tell the difference between an M1 Carbine at 200 yards or a 300 AAC BLACKOUT at 525 yards.

**200RNL** · 12-04-11, 12:31

Originally Posted by rsilvers

Yes, the target cannot tell the difference between an M1 Carbine at 200 yards or a 300 AAC BLACKOUT at 525 yards.

You are right. I'm just saying that it makes little difference to the target if the range is short and the 18 inch .30 Carbine and the 9 inch 300AAC BLK is launching 110gr bullets to nearly the same velocity. Your table doesn't give the range but I am assuming it is short.

Of course, even if launched at the same velocity, the more aerodynamic bullet of the 300AAC BLK will have the advantage at the longer ranges. There will be an even larger advantage if the 300AAC BLK is fired from an 18 inch barrel.