Well, Morris,Precut or precrimped copper bullets already exist. If we assume that such a projectile would need to be partly machined and partly die formed to close the nose, then those .02" tapering slits could have the petals "line to line".The objection to plastic bearings on bullets surely comes from ones fired at supersonic velocities? Lower speeds, fired from a reasonably finely finished bore is unlikely to melt or deposit plastic; or am I dreaming?Why have a cut bullet nose at all? Because at airgun velocities the copper is unlikely to expand. Perhaps that could be addressed by making the meplat larger in diameter and thinning the wall; like this:
What if we took a bore riding copper bullet and gave it two or three coatings with powder coat? That should increase the diameter by some 0.005-6" allowing it to seal on grooves of most barrels.
Shoot them in the head and stop worrying about it. Marko
Quote from: rkr on September 27, 2021, 12:02:01 PMWhat if we took a bore riding copper bullet and gave it two or three coatings with powder coat? That should increase the diameter by some 0.005-6" allowing it to seal on grooves of most barrels.Is copper pipe suitable for casting copper bullets? I'm going to try and cast my own .45 ammo this winter. Wouldn't be a big deal to get a .452 (or whatever .005-6 undersize would be for my bore) mold and sizer and cast some undersized slugs. Someone else would have to do the powder coating, although I hope to be able to do that myself in the future. I'm also curious about trying my hand at casting tin, or maybe even a tin/lead mixture that won't fragment. I want to hunt game, but don't want to eat lead contaminated meat, or at least doing my part to not contaminate it further.
Is copper pipe suitable for casting copper bullets? I'm going to try and cast my own .45 ammo this winter.
Can you just "paper wrap" a bullet with cyanoacrylate and Teflon tape?
Quote from: Spacebus on September 27, 2021, 12:19:56 PMIs copper pipe suitable for casting copper bullets? I'm going to try and cast my own .45 ammo this winter. Not, if you are using an aluminum bullet mold: https://steelforge.com/literature/metal-melting-ranges/https://www.metalsupermarkets.com/melting-points-of-metals/By the way, powder coating is plastic. Plastic that melts at low temperature and fuses to metal objects. It may be on Miles' list of plastics that foul bores. Then again, there are a number of people on this forum that shoot powder coated bullets and claim less fouling than bare lead.
It may be on Miles' list of plastics that foul bores.
The main problem, as I was pointing out, though perhaps you did not understand, will be getting over this prejudice against plastics.