Pressure
- Thread starter baldtop
- Start date
- Location
- The Conservative part of Ontario
Just speculating, but it's possible the shorter case of the Colt might deposit a small amount of fouling, or lead, in the chamber area of a 454 depending on the design of the chamber in the firearm in question.
When I say possible, I think I'm stretching it a long ways. I think for the most part, it's likely hooey. I also think it would be hard to measure any increase.
When I say possible, I think I'm stretching it a long ways. I think for the most part, it's likely hooey. I also think it would be hard to measure any increase.
Mystic Precision
CGN Ultra frequent flyer
- Location
- Summerland, BC
Yes, if you never cleaned that pistol, used really soft lead and toasty loads so you got lots of leading, then jammed a long magnum into the chamber you will get high pressures.
But are we really that careless????
Jerry
But are we really that careless????
Jerry
If there is a severe ring, then the pressure MIGHT end up being a bit high for a 45 Colt. But since the 454 Casul runs at 50,000 psi, an itty bitty ring of wax/lead, isn't going to stop it. Peak pressure for a 454 is after about 3/4 inch of bullet travel, so it will be way past the ring at peak pressure.
Also, if the buildup is that severe, you probably won't even be able to chamber the 454 round.
Also, if the buildup is that severe, you probably won't even be able to chamber the 454 round.
Yes it is true -
The buildup from the .45LC is in the area that the .454 case mouth must open up to release the bullet.
The .454 peak pressures are similar to the new short mag rifles, yet use a very thin cylinder wall - especially the six shot Ruger.
The first sign of cylinder damage ( best case scenario) is stiff extraction and spent cases out of round. Spin the cases in your fingers and you may fee the out-of-roundness and there may be a line imprinted up the case that looks and feels almost like a crack in the case.
If you suspect that your gun has been damaged, don't shoot it until it has been checked carefully.
Do not change from .45 to .454 without careful cleaning.
The same warning should also likely apply to the change from .38 to .357, but the pressures are much lower in them - has anyone had a .357 crack?
The buildup from the .45LC is in the area that the .454 case mouth must open up to release the bullet.
The .454 peak pressures are similar to the new short mag rifles, yet use a very thin cylinder wall - especially the six shot Ruger.
The first sign of cylinder damage ( best case scenario) is stiff extraction and spent cases out of round. Spin the cases in your fingers and you may fee the out-of-roundness and there may be a line imprinted up the case that looks and feels almost like a crack in the case.
If you suspect that your gun has been damaged, don't shoot it until it has been checked carefully.
Do not change from .45 to .454 without careful cleaning.
The same warning should also likely apply to the change from .38 to .357, but the pressures are much lower in them - has anyone had a .357 crack?
