it may be more efficient, but loaded to the same pressure the larger case capacity creates more gas, which makes more velocity, no way can the wsm make more velocity than the 7 RM, cubic inches makes horsepower no matter how ya look at it
RR
Yeah, but would the 7mm Rem need more barrel length to achieve its maximum potential? As the powder is burning and gas is expanding and bullet is pushing down the barrel, the end of the 7mm powder column is running down the barrel, ahead of the reaction. In a short barrel, wouldn't a large charge drop a few grains on the ground? I think the short mag gets all the coals cooking evenly. Like a charcoal grill.
There's no replacement for displacement, right?
But there are high compression engines with fuel injection and twin turbo chargers.