Large bore that can accept normal pistol bullets and shoot all copper

I have been looking at airguns for... A long time. Well, I have an older single pump pneumatic target rifle in .177, but this would be a more general use PCP rifle.

I think I might finally jump in. One issue is I am interested in shooting lead free. Actually, specifically copper slugs. The reason for this is I shoot indoors. My plan is to swage them. Probably using a Corbin press. The setup is fairly insane in cost, so I have been avoiding it. I may offer the slugs for sale around cost, including machine cost, to help transfer the investment and allow purchase of copper at higher volumes. It seems like a Corbin press is very low maintenance. As much as I frown on anyone reloading while watching TV, it seems entirely reasonable to swage while doing so, so my labor cost would be minimal.

Anyways, I would also like the option of being able to shoot lead bullwts. I have cast lead bullets before, part of why I want to stay away from it now, but it may come back up. I also know I can buy an absolute ton of lead bullets for next to nothing from people I know who cast as a hobby. I will just have to shoot outside and go through a very very detailed cleaning before shooting indoors again if I switch to lead.

So, this leads me to: are there any airguns that can handle a common firearm bullet? Firearm bullets of the same diameter seem to run a higher volume(longer with no cavity), but pure copper v. Lead should eliminate most of the weight difference.

I know one can shoot 357/9mm soft lead out of some and it will more or less swage to correct size in the barrel since it is so soft. It seems that is less likely to work with a pure copper slug.

I am not terribly worried about barrel wear. I shoot enough volume barrel changes are part of the deal. Despite what I saw posted here in a tangent thread, copper is definitely going to wear a barrel more than lead even if it is substantially softer than steel. An hardened steel ax still dulls when cutting a tree. I am just concerned about squibs and other safety concerns or damage to the airgun.
 
Hmmmm, I'll look it up but frangible rounds for .223 are pressed around 120k on hydraulic equipment.

Good luck but I'm afraid you're looking for a unicorn 🦄.
I've already posted to information explaining this can be done at 20k PSI and a press which will deliver that pressure with manual operation and one that is hydraulic. People are swaging bullets with the Corbin presses linked. It is just a matter of which caliber is the best to match up with an airgun and a firearm.
 
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I've been wondering about this myself, my worry would be that if there's enough power to push a pure copper bullet out the barrel?
When a pellet/slug is pushed trough the barrel it get's crimped by the rifling. Lead is soft, so easier to push into the shape of the barrel.
Copper is harder so would require more power to push trough, so you might need to use higher pressures or the bullet might get stuck in the barrel?
Would a tapered barrel cause a clog or is there enough power in an airgun to squeeze out a pure copper bullet?
It is being done with small caliber pellets operating at lower pressure. The slugs do have a thin-walled skirt/hollow base design.
 
I've already posted to information explaining this can be done at 20k PSI and a press which will deliver that pressure with manual operation and one that is hydraulic. People are swaging bullets with the Corbin presses linked. It is just a matter of which caliber is the best to match up with an airgun and a firearm.

Good luck, physics says differently.
 
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