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Old August 2, 2014, 05:23 PM   #21
JD0x0
Senior Member
 
Join Date: January 30, 2013
Posts: 1,037
Those super light .40's and .45's sound gimmicky. Very low sectional density. Probably penetrate and retain velocity as well as birdshot or lighter buckshot pellets.

In contrast, a 110 grain .308 caliber bullet has the sectional density equivalent to a 236 grain .451 caliber projectile.

As far as the muzzle blast and report, I wouldn't think it'd be any worse than a .357 snubby, even with milder loads. There's plenty of people who carry LCP's and comparable guns with 1.8-2'' barrels. I assume the muzzle blast would be pretty significant.

Also I don't think there's anything stopping you from using a flash suppressor or sound suppressor, if you wanted to. You'd just have to ensure the suppressor is capable of handling the pressure of supersonic loads.
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