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.
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