Quote Originally Posted by airgunnut View Post
If the gun is NOT proofed for nitro then don't use it! it could be the last thing you do.
I have been shooting old Winchesters for 30 years and have a 1876 Winchester carbine that the 45-75 round was developed for black power use.

This rifle has been to the proof house in London and I decided on my visit with the proof master to go for a certificate of non proof.

I happily shot on a regular basis with a slow burning powder. I would need to hunt in the cuboard for the type.

I have friends in the US who do the same.