Michael Tinker Pearce
Member
- Joined
- Oct 23, 2016
- Messages
- 1,578
I honestly cannot recall if I have posted about this before on this forum. I am working on a wildcat cartridge for revolvers- .251 TCR (Tinker Centerfire Rimmed.)
This is a straight-walled case .25. The loads above are a 38gr. SWC and a 31gr. Hollowpoint. I also have 50gr. FMC and 35gr. Gold Dot hollow-points on the way. I'm going to be experimenting with SWCs and wadcutters in weights up to 65gr. The parent case for this cartridge is .22 Hornet (shown below.)
The idea is to develop loads ranging from primer-propelled gallery loads right up through something a bit hotter than .22 Magnum; basically to span the power range of .22 rimfires in a reloadable cartridge.
I'm currently working on converting an Uberti 1873 to fire this cartridge, using some .25 ACP barrel 'liner' from JTs. This was a percussion version I picked up cheap. I've lined the barrel and am working on converting the cylinder; I've turned some 4140 round bar down to fill the chambers, then I'll line-bore the cylinder and ream the chambers for the cartridge.
I've recently gotten a chronograph and will be working on load development. The current test loads are in the same power-range as .25 Auto, and I'll work up from there.
Here's a work-in-progress shot of the test-gun. I had to cut the barrel to 3-1/2" because that was the longest I could ream out for the barrel insert. I 'slabbed' the barrel to give it a distinctive look, which I think will look pretty cool once it's blued. Still have to finish the cylinder and mount a front sight. With luck I'll be firing the first test-loads this weekend!
Eventually I plan on making a new cylinder from half-hard 4140, but that will have to wait a bit.
This is a straight-walled case .25. The loads above are a 38gr. SWC and a 31gr. Hollowpoint. I also have 50gr. FMC and 35gr. Gold Dot hollow-points on the way. I'm going to be experimenting with SWCs and wadcutters in weights up to 65gr. The parent case for this cartridge is .22 Hornet (shown below.)
The idea is to develop loads ranging from primer-propelled gallery loads right up through something a bit hotter than .22 Magnum; basically to span the power range of .22 rimfires in a reloadable cartridge.
I'm currently working on converting an Uberti 1873 to fire this cartridge, using some .25 ACP barrel 'liner' from JTs. This was a percussion version I picked up cheap. I've lined the barrel and am working on converting the cylinder; I've turned some 4140 round bar down to fill the chambers, then I'll line-bore the cylinder and ream the chambers for the cartridge.
I've recently gotten a chronograph and will be working on load development. The current test loads are in the same power-range as .25 Auto, and I'll work up from there.
Here's a work-in-progress shot of the test-gun. I had to cut the barrel to 3-1/2" because that was the longest I could ream out for the barrel insert. I 'slabbed' the barrel to give it a distinctive look, which I think will look pretty cool once it's blued. Still have to finish the cylinder and mount a front sight. With luck I'll be firing the first test-loads this weekend!
Eventually I plan on making a new cylinder from half-hard 4140, but that will have to wait a bit.