Originally Posted By: Drew Hause
1909 Ithaca with Twist barrels and the "NITRO POWDER PROVED" mark



Still offering these time bombs in the 1918 E.C. Simmons catalog



Then in 1942 Lou Smith claims these same barrels fail with a single proof load?!?

Jack O'Connor Outdoor Life 1942
A good many people resent being told that their much loved old guns were no longer safe. Just for the fun of it, Lou Smith (President of Ithaca Gun Co.) proofed (using 17,500 psi Proof Loads in 1942) a dozen or so damascus and twist beauties which were lying around the plant. Here's the dope: Most of the old timers busted loose with the first proof shell. The rest did with the second. Guns tried were cheap, medium priced and expensive: but all of them went. So if anyone wants to go ahead using modern smokeless stuff in a gun built for black powder, he can; but he can include me out.

The Parker GH Damascus barrel studied by Sherman Bell took 29,620 psi before the chamber blew.

Just trying to be helpful wink
http://www.shotgunworld.com/bbs/viewtopic.php?f=2&t=432872


They sure don't like twist barrels over on shotgunworld and neither did Jack O'Connor.

In this thread they're really going to town so much that a moderator threatens to suspend or ban anyone who opens another thread about the subject. Never did like that forum very much anyway.

http://www.shotgunworld.com/bbs/viewtopic.php?f=2&t=432969