Pistol barrel rifling

Olle · 06-28-2011, 10:25 AM

Quote:

Originally Posted by alanint

A friend of mine blew up an M16 by extensively firing lead .22 rimfire through it full auto with a conversion unit then swapping back to .223 without scrubbing out the barrel. After I saw that, I built a dedicated .22 rimfire upper for my M16 and use that, and only that, with .22 rimfire.

Word on the street is that you just have to shoot some .223 to get the fouling out, so thats good info. I shoot quite a bit of .22 through my Bushmaster, so I will definitely be cleaning it after each session.

alanint · 06-28-2011, 05:03 PM

Well, remember that my friend was shooting full auto with lead bullets at about 1,200 RPM. In a 14.5" barrel this leads up very quickly. Shooting semiauto should present a much lesser risk.

In any event, I went to a 7.5" barrel "Kitty Kat" upper, removed and plugged the gas tube and polished the entire insides. I also try to shoot only CCI minimags, which are plated, in the upper. With all these tweeks the upper runs 99% with a Ciener F/A kit. A blast to shoot all day very cheaply!!

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06-28-2011, 05:03 PM	#2
alanint User Join Date: Mar 2008 Location: Marco Island, Florida Posts: 4,867 Thanks: 1,685 Thanked 1,917 Times in 1,193 Posts	Well, remember that my friend was shooting full auto with lead bullets at about 1,200 RPM. In a 14.5" barrel this leads up very quickly. Shooting semiauto should present a much lesser risk. In any event, I went to a 7.5" barrel "Kitty Kat" upper, removed and plugged the gas tube and polished the entire insides. I also try to shoot only CCI minimags, which are plated, in the upper. With all these tweeks the upper runs 99% with a Ciener F/A kit. A blast to shoot all day very cheaply!!