Guys-

I bought a pair of the 12 to 28 ga. Chamber Mates this past weekend.

I tried them in a Chas. Daly Superior (1960's) SxS and they worked pretty well.

Tried to get them into my Md 21 to try out. The chambers seem too tight to reasonably slide them in. I did tap them in with a small metal hammer but they were so tight the extractors on the 'Mates would not then work. Tapped them back out and both the gun and 'Mates were fine.

Wondering if I could throughly clean the chambers with a chamber brush if that would help or are the chambers really too tight to use them? Anyone else use them in a Md. 21?

Thanks,
Cory