Where did you get the idea that greasing cases was a good idea?
Paul Mauser. His first semi auto used greased 8 X 57 ammunition. Actually, I got the idea after reading Chinn's Machine Gun Book, Vol 1 and Vol 4. Vol 1 has pages of machine guns with oilers. Any of the pre WW2 retarded blow back mechanisms used oil, wax, or grease as a case lubricant,
but there were a number of mechanisms that used oilers even though the were not delayed blowbacks, and it was because manufacturing technology was unable to hold the headspace tolerances on replacement machine gun barrels. So, the designers put oilers on top of the things
which allowed the case to slide to the bolt face without sidewall separation. When I am fireforming cases, I don't want sidewall stretch, and so when I lubricate my cases, on first firing, I lubricate them.
Additionally I have found that I have eliminated jacket fouling in one chrome lined barrel by firing greased bullets. The rifle is a J.C Higgins M50, and it jacket fouled so bad, within a box of 20 rounds, you could not see rifling. I had a gunsmith lap the thing, which improved things, but still it would jacket foul in spots. Last CMP session, I fired at least 50 rounds, greased bullets, dipped down to the shoulder, similar to this:
and no jacket fouling!. When I pushed a bristle brush down the tube I did not feel any tight spots. That tells me, if you push enough grease down the tube.
this is over kill:
then you are reducing friction between the bullet and bore. And that may increase barrel life.
I've always read that any grease on cases causes them to slip in the chamber and apply too much pressure to the bolt..
It is amazing of the absolute lack of gravitas within the in print community. The origin of this is an pre WW1 Army coverup. At the time everyone was greasing their bullets, because cupro nickel bullets jacket fouled something awful.
No one knew, and the Army never admitted, that the Army Arsenals were producing 03's with burnt receivers. When ever an Army 03 blew up, with Army ammunition, well it had to be the grease, right? You cannot believe anything a Corporate or Government entity says about a failure as they will never, ever, admit to fault. Even now, based on today's newspaper, many residents of Flint Michigan won't drink the tap water, no matter how many times the City or State Government assures them, that the water is safe. And based on the years of lies and denials from the authorities, who can fault the residents in being a bit skeptical about anything the utility company tells them about the water.
Anyway, the inprint community are sticking with a century old Army coverup, that grease or oil dangerously and unpredictably raises pressures. These guys are incapable of asking themselves, simple questions such as:
just how much would you weaken a locking mechanism, based on the assumption that the case is carrying load? I have never seen anyone present a good bolt thrust reduction number to use in weakening the mechanism, and how to keep it a constant. I would not assume the case carries any load, and I would not weaken any locking mechanism based on any assumption that the case carries load. Nor have I found a designer who would.
And, the inprint community does not know their firearm history. If they did, and they knew about the hundreds of fielded weapons that used greased, oiled, and waxed ammunition, maybe they would understand that there is an inconsistency in their belief system. But they don't, and of course, they won't.