Exposing lead core on Campro 405

[hogie]

I have the same campro bullets as well. I often wondered about shaving off the copper plating on the meplat and converting my bullets into hunting rounds. My rifle is a Pedersoli sharps q model and I've come across three boxes of Remington core lokt rounds. I understand that they are way too powerful for my sharps, can I reduce the loads from 49.9 gns to a mild load using the same powder? If so, what powder charge would be good to start with?

What does it say on the box? Safe for all rifles or modern rifles only. They had 2 different loads.

I believe that anything modern sharps can handle better than trapdoor loads. Check with rifle manufacturer as to what they say. I dont see any need to push a 45-70 to higher velocity over trapdoor loads to be effective.

 

[Denver Steve]

I have done the same thing for my 45-70 using the 500gr spitzer they make. (Single shot rifle) I made myself a jig for my small mill and do a single pass with an end mill to keep things consistent. I haven’t used them on game yet but to be honest I’m not too concerned about expansion with a .45 cal hole to start with. I have seen no loss of accuracy after cutting them down.

Have you tried a comparison between a ball-nosed endmill and your regular center cutting endmill?

Be interesting if a radiused bottom of the hole changes its expansion or flight characteristics.

I guess a person could also compare using a countersink or counter bore bit as well. Endless possibilities for making a hole at the end of a bullet.

 

[geologist]

Any issue with jacket separation?

My Russian geos talked about converting their 7.62x39 FMJs for hunting deer, moose, caribou.

They never mentioned any problems doing it.

 

[armoredtrooper]

What does it say on the box? Safe for all rifles or modern rifles only. They had 2 different loads.

I believe that anything modern sharps can handle better than trapdoor loads. Check with rifle manufacturer as to what they say. I dont see any need to push a 45-70 to higher velocity over trapdoor loads to be effective.

Pedersoli stated, when I spoke to them, that the Quigley rifle is only designed for black powder but there are smokeless powder loads that duplicate the pressures of black powder. The box of 4570 I'm referring to is a high power load of 49.9 gns of their powder. The load in that cartridge is too powerful for my rifle. I want to reduce the pressures and velocity, not increase them. My question is can I reduce the powder in this case and will that in turn reduce the pressures to a safe level?

 

[257hunter]

Have you tried a comparison between a ball-nosed endmill and your regular center cutting endmill?

Be interesting if a radiused bottom of the hole changes its expansion or flight characteristics.

I guess a person could also compare using a countersink or counter bore bit as well. Endless possibilities for making a hole at the end of a bullet.

I have only ever used a flat cut. I just have a small hobby mill and I’m not certain the adjustment is 100% reliable so I leave the cutter in a fixed position and use the vice to pass the bullet through underneath.
I think the cam pro is more akin to powder coating than a proper jacket, don’t think separation would be as much of an issue as it might with a surplus fmj.
I might have to do some hillbilly ballistic testing once it’s a little warmer out and report back here.

 

[Ex3dy]

some saltywater and a 9v battery can take that copper off just as precisely as it was put on, electro etching is fairly easy