smitl37 said:
So it is not crud building up. I did a full moon clip of blazer brass and it ejected without any resistance, vs the Armscor which needed beat out. Was not cleaned or anything prior to. I think it is just the ammo type, and was looking for other ammos that may be good or to avoid.
With revolvers, broadly speaking, sticky extraction is one of two things:
- An over-pressure load that expanded the cylinder enough that it trapped the brass when it elastically returned to size.
- Crud built up at the case mouth position of a shorter case fired in the gun, creating a constriction when a longer case is used in the gun.
Both situations are possible. A fellow on another board tested ammunition for government agencies and said that by the time your testers have fired half a million rounds of different commercial ammunition, you have seen every kind of failure that any reloader has, including over and underloaded or uncharged or backward or crushed primers, and a few failures the reloader doesn't have, like a seated hollow jacket with no lead core, or a primer pocket with no flash hole. While most commercial ammo is reliable, the possibility of a manufacturing error can't be dismissed out of hand. You occasionally see recall notices for specific lots of loaded ammunition for exactly this reason. So if the chambers are truly clean, you may want to contact Armscorp about that ammo lot and see if they want you to send it or part of it to them for testing.
The dirty chamber issue is common with folks firing 44 Special in 44 Magnums, 38 Special in 357 magnums, 32 Long in 32 H&R Mag (or both of those in the 327 Federal), etc. Any time you shoot a cartridge whose case is not the full length of the chamber you are firing it in, a buildup of carbon or metal fouling may occur just in front of the mouth of the short case that subsequently interferes with longer cases being chambered or can make it hard for them to expand enough to release the bullet, which raises pressure, and then you have both causes for the symptom at work.
You want to look closely at your chambers. If you borrow or can afford one of
the inexpensive borescopes sold on Amazon, looking with one of those will let you see a lot more clearly than looking through from either end of the chamber with the light at a shallow angle of incidence. You might be able to feel a constriction with a bent paperclip. If you have this issue, I recommend getting a little
Slip2000 Carbon Killer, wetting the chambers with it and letting it sit 15 minutes, and then brushing it out with a bronze chamber brush and then patching it out and then repeating until nothing else comes out.