Using Bismuth Shotgun Loads

[houtsdg]

I've decided to make the jump to using all non-tox so I don't have to worry about what load for what area. I have been looking at the options but have a question about the Bismuth. It says they are "safe for use in nitro-proofed barrells". What is a nitro-proofed barrel and what guns would you expect to find them on?

[stubblejumper]

Bsically it means all guns made for smokeless powders.

[Hacimsaalk]

it pretty much means it is safe for any gun made for smokeless powder, like stubble said. they are great loads, but they're rather expensive. ($32 for twenty 28ga loads)

[700bdl870exp]

I wouldnt bother with the bis muth just use good steel. bismuth is really expensize and honestly with my own experiences i get way better penetration and knockdown power with steel.