1) Gas checks do NOT scrape lead out of barrels. Remember, they're pressed on the base of the bullet and are easily pulled off.
My experience differs. While gas checks may be easily pulled off when applied incorrectly- checks that have a detent ( like hornady, for example) are not. And in any event, the "pulling" doesn't happen in a confined barrel. Sure, you could pry one off with your finger. Thats totally different from an ignition. The pressure hits the check and bullet, pushing it forward. On soft checks the force centers on the check, causing it to slightly release from the bullet, flexing outward at the rim. That'd be great if it happened every time- but we can only hope. Most often it stays firmly crimped on the end of the bullet, pushing all of the softer materials in its path forward under pressure like a plunger.
I have some theories about bullets that discard the check due to buckling at ignition- WEight of the bullet/ speed/ discarding sabot/etc... but myself and my wife are still doing the math on those. Hopefully we'll get to the bottom of it at some point.
Much like a jacketed bullet, copper gas checks ( which obturate much differently than lead, and do not melt at the same temperature) will indeed push melted lead from rifling right out of the barrel of a gun.
Similar to a high speed chisel ( for lack of a better visualized analogy) upon impact with another material, the impacted material will either move- or obstruct. Lead does not obstruct the harder copper edge of a gas check. If it did not, the gas check would lodge in the barrel. Doesn't happen to me, maybe it does to you. Only you can tell.
I do it often (clearing lead fouled barrels with jacketed and gas checked bullets), thats my evidence.
2) Gas check do NOT prevent obturation, they do however AID in preventing gas cutting, which causes leading.
I stand corrected- they don't prevent it- but the obturation of a gas check bullet differs significantly from that of a lead alloy only bullet. Even jacketed bullets obturate- thats true. What gas checks do is indeed prevent the gas cutting on the base of bullets. I should have spoken.......better.
If they didn't obturate, they wouldn't push all that messy lead out of the barrel, they would skip right along. Since they do, and conform the the bore, they do indeed push those softer metals and lube right out.
3) A little leading really is no big deal and any leading is quite easily removed.
I agree.
The method I use is usually a high speed jacketed or gas-checked bullet.
Some folks use a lead remover- like Chore boy, or another lead fouling remover. This technique forces a harder than lead substance ( like copper, for instance) at the speed of your hand whilst wrapped around a dowel to scrape it from the barrel by forcing the bead or edge of copper against the rifling and bore surface of your barrel.
Why this would work at 1 fps and not 1000 fps is beyond me. One is laborious, one takes two pounds of pull and a fraction of a second.
really knowledgeable cast bullet folks tend to hang out at...cast bullet forums!
As much as it pains me, here we go again.......
Why would you send someone away from HERE, who is looking for help HERE, when they are already HERE, ?
So, I offer some reasoning on why I think thats not the best Idea;
They aren't the only sharp tacks on the block- and I'll add that they also like really objectionable terms at that site- like this one, for instance :
http://castboolits.gunloads.com/showthread.php?26524-Just-the-facts-Lube-recipes
"Pinko Commie Fag lube"
Why you would send someone from the highroad into that kind of muckery is beyond me- and why I asked that again, we could have a cast bullet section here.
If you or your other expert friends have more information to offer- bring it here ! We've got click ads too, and honestly, I'd rather support this community than send information seekers back into the dark ages.
The verbiage mentioned above is.........tame.........compared to some of the commentary presented there. You've been warned- its not very kid friendly, at the very least.
Maybe that floats your boat. Maybe it don't.
If thats acceptable to you, by all means- surf away. When you wonder why the rest of the folks who vote your rights away think you're neanderthals for allowing that, and immediately connecting it to gun ownership- don't bark up my tree.
However, if you wish- you can go there and find out that the information presented here is indeed, accurate.
Have a great weekend.
