Quote Originally Posted by Turnup View Post
Thanks for sharing this. Friend of mine is experimenting with nitro + shotgun primers but has not bothered with nitro proof. AFAIK this is not illegal per se as long as he does not try to sell it - I have issued dire mutterings but he is adamant that this is safe 'cos he knows others who have done similar - it's his hand......

Was the nitro conversion a new cylinder or just a re-proof of the original? Also does the nitro proof marking mention any load limit? It occurs to me that a chamber filled to the max with BP remains perfectly safe but this might not be so for nitro.
Hello,
The cylinder is a modified original and the gun was proofed for a max load of 5 grns of Herco or similar large flake smokeless powder.
Brian