22-3000 Lovell

[dellet]

you can make it out of 25 20 stevens single shot

You can make it out of 223 and the brass will hold up better under higher pressure.




Fun cartridge

 

[0.1 Aggregate]

What kind of press do you use to size .223 cases down that far? I’d assume that internal capacity is markedly less with the resized cases.






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[dellet]

What kind of press do you use to size .223 cases down that far? I’d assume that internal capacity is markedly less with the resized cases.






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The rim just needs a little work, depends on the chamber cut.

You can swage the base a little bit, but too much collapses the primer pocket. The rest is turned down.

It seems to work better to turn the lower web area first to give the brass a place to flow to, then use a series of dies to reduce the upper portion.

Necks will most likely need to be turned, but that depends on the donor case. The shoulder of 223 case really varies, so you can end up with a pretty good taper in the neck of the new case.

Some people use 357 Max brass and turn the rims because the brass is generally thinner.

Reduced case capacity depends on the donor brass and is a +/-. You can end up with higher pressures and velocity, but the brass generally lasts longer. What killed the cartridge was chasing velocity. The Griffin & Howe brass was thin to increase case volume.

Memory says about 1 1/2 grain less case volume.

I use a T7 turret press for projects like this, if it takes more force than that can generate it probably needs another step or should not be done.

There is a lot more info out there on converting 223, to 25-20 SS. If you search.

 

[highwall1291]

The rim just needs a little work, depends on the chamber cut.

You can swage the base a little bit, but too much collapses the primer pocket. The rest is turned down.

It seems to work better to turn the lower web area first to give the brass a place to flow to, then use a series of dies to reduce the upper portion.

Necks will most likely need to be turned, but that depends on the donor case. The shoulder of 223 case really varies, so you can end up with a pretty good taper in the neck of the new case.

Some people use 357 Max brass and turn the rims because the brass is generally thinner.

Reduced case capacity depends on the donor brass and is a +/-. You can end up with higher pressures and velocity, but the brass generally lasts longer. What killed the cartridge was chasing velocity. The Griffin & Howe brass was thin to increase case volume.

Memory says about 1 1/2 grain less case volume.

I use a T7 turret press for projects like this, if it takes more force than that can generate it probably needs another step or should not be done.

There is a lot more info out there on converting 223, to 25-20 SS. If you search.

Dellet, I really appreciate you and others sharing insight on how to reform 223 and 357 Max cases into 25-20 SS and its derivatives. I'm planning to make both 25-20 SS and R2 Lovell. I have a hydraulic press, a 7mm mauser sizing die, a lathe, and experience with turning case rims and bases. So forming the case body, base, and rim should be easy for me. However, I have no experience with necking down cases to form a shoulder. Any chance you could explain the neck forming process? I have yet to see anyone explain this part. For example, do you simply run the case up a R2 Lovell sizing die and your done? or are the intermediate steps in that process? Thanks!!

 

[dellet]

Dellet, I really appreciate you and others sharing insight on how to reform 223 and 357 Max cases into 25-20 SS and its derivatives. I'm planning to make both 25-20 SS and R2 Lovell. I have a hydraulic press, a 7mm mauser sizing die, a lathe, and experience with turning case rims and bases. So forming the case body, base, and rim should be easy for me. However, I have no experience with necking down cases to form a shoulder. Any chance you could explain the neck forming process? I have yet to see anyone explain this part. For example, do you simply run the case up a R2 Lovell sizing die and your done? or are the intermediate steps in that process? Thanks!!

Going from 32 caliber, which is what you have with a swaged down case, to 22 in one step is a problem. Down to 25 is a little better. I have both 25-20 and Lovell dies so that’s what I use. You can also use the seating dies as an intermediate step.

The 32-20 parent dies can work in a pinch. 25-20 WCF and 218 Bee.