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Old December 6, 2012, 06:57 AM   #2
thedudeabides
Senior Member
 
Join Date: August 22, 2012
Posts: 1,030
A barrel without a feed ramp (like most 1911s) leaves an area of the cartridge exposed (unsupported) and prone to blowout with high pressures--something 45 ACP doesn't generate.

Ramped barrels have more support in this area, something you NEED when using high pressure 10mm loads.

Last edited by thedudeabides; December 6, 2012 at 07:05 AM.
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