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Aside from not being common the .45 gap is actually a smart idea.
The original .45 ACP is old. The case had to be so big because of older less efficient powders.
Now with modern powders u need less to provide same power.
That's why .45 gap is so much smaller than .45 ACP even though they use the same bullets and fire same velocity.
A .45 gap fits in 9mm/.40 size guns. You don't need a .45/10mm size gun like you do .45 acp.
.45 gap is a good cartridge but just hasn't caught on with the public like the .357 sig and 10mm.
Ppl cling to old cartridges like 9mm and .45 acp.
The original .45 ACP is old. The case had to be so big because of older less efficient powders.
Now with modern powders u need less to provide same power.
That's why .45 gap is so much smaller than .45 ACP even though they use the same bullets and fire same velocity.
A .45 gap fits in 9mm/.40 size guns. You don't need a .45/10mm size gun like you do .45 acp.
.45 gap is a good cartridge but just hasn't caught on with the public like the .357 sig and 10mm.
Ppl cling to old cartridges like 9mm and .45 acp.