old Ithaca double - Page 2

J.G. Terry · December 8, 2018, 02:27 PM

On the stations on the Ithaca safety check on the single trigger on the NID.

bladesmith 1 · December 19, 2018, 01:17 PM

There is NO good reason to open the chamber from 2 1/2 to 2 3/4. You're taking metal away from the most important part of the barrels - where all the pressure is . Sherman Bell did some test a couple of years ago and found shooting 2 3/4 shells in 2 1/2 chambers only raised pressures about 500psi. So buy RST shells or handload to around 8000psi or less and you won't have any problems. A roll crimped shell uses a 1/4" less material to achieve the crimp, so a 2 1/2" roll crimped shell looks like a 2 3/4" star crimped shell before it's fired. Cut the shells to 2 1/2", buy a roll crimper and overshot cards from BPI or Precision Reloading and make some really cool looking shells. I have over a dozen old SxSs, most with Damascus barrels, and have never measured the chamber lengths - just shoot 2 3/4" shells in them. Parkers, Remingtons, Lefevers, it doesn't matter, they all work just fine.

December 8, 2018, 02:27 PM	#26
J.G. Terry Senior Member Join Date: January 24, 2014 Posts: 577	Ithaca safety On the stations on the Ithaca safety check on the single trigger on the NID. __________________ Intentionally Antagonizing Another MemberInsults and Ad Hominems Last edited by J.G. Terry; December 8, 2018 at 02:28 PM. Reason: SOS

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

December 19, 2018, 01:17 PM	#27
bladesmith 1 Senior Member Join Date: July 14, 2018 Posts: 240	There is NO good reason to open the chamber from 2 1/2 to 2 3/4. You're taking metal away from the most important part of the barrels - where all the pressure is . Sherman Bell did some test a couple of years ago and found shooting 2 3/4 shells in 2 1/2 chambers only raised pressures about 500psi. So buy RST shells or handload to around 8000psi or less and you won't have any problems. A roll crimped shell uses a 1/4" less material to achieve the crimp, so a 2 1/2" roll crimped shell looks like a 2 3/4" star crimped shell before it's fired. Cut the shells to 2 1/2", buy a roll crimper and overshot cards from BPI or Precision Reloading and make some really cool looking shells. I have over a dozen old SxSs, most with Damascus barrels, and have never measured the chamber lengths - just shoot 2 3/4" shells in them. Parkers, Remingtons, Lefevers, it doesn't matter, they all work just fine.