09-24-2019, 08:32 PM
Lemonaid Wrote:This is an interesting topic to me and would like to understand the mechanics of it more.
Is the extra carbon fouling on the cases the result of lower pressure and less complete combustion of the powder?
Dose this also mean that the more fowled the cases are, the more carbon will adhere to the bolt and bolt carrier?
Can using faster or slower powders change the amount of fowling? I formed an opinion about CFE 223 being a dirty powder that may be incorrect. It seamed to not foul as much the closer to a max load I got.
One more thing. I noticed in my RAP bolt action when ejecting brass and catching them in my right hand that the cases were barely warm.
Cases from my BCA AR are hot enough to burn if left in the hand for more than a fraction of a second.
It the thermal difference also due to the cases being "bathed" in the gasses from gas tube?
Hot brass from the ar and cold brass from the bolt is the results of operating principles from both actions.
The ar even with the gas dialed down as low as possible is still pulling the brass under some pressure. It's just how the system works.
The bolt doesn't use gas to work so no matter how fast you try to work the bolt all the gas pressure is off the brass before you can try and eject it.
Just how my mind sees it. Could be wrong could be spot on but it's what I belive.