hawg
Member
Found it. It was an 1873 cap and ball and he egg shaped the firing pin hole so he could use a standard 1873 hammer and cylinder. The hole was so big it deprimed the .45 Colt cases and blew the hammer back and the gun went full auto.
I don't doubt that. I guess with some very careful load development, and a light main spring, one could even get some reliability. I'd also guess that it would be very hard on the action. Or, I wonder it it would just go full-auto, unless the trigger had some kind of disconnector on it. ? Yeah I think it would.Somebody on another forum 7 or 8 years ago IIRC had that result.
Your opinion here carries more weight than you probably realize. You’re one of the OG’s…In my opinion and it's worth exactly what you paid for it is a wad may increase revolver accuracy but it would take a bench to prove it. Lead in something like a 45-70 is hard enough it doesn't need a wad. Go soft here and you're going to lead the barrel big time.
I’m using only 4f and heavy loads with a 200 grain bullet in one Colt 1860. It’s an experiment to see if I can cause any erosion in the nipples orifice. These are stainless and supposed to be a tough alloy, in a small bore 40 caliber rifle they will eat 40 full power rounds and smile but revolvers are inlines and I wonder if they’re more susceptible to erosion. As long as the orifice is something under .030 or even .032 or so I don’t think any blackpowder load will cause blowback.That's right, the rear of a cap-N-ball cylinder is "vented". I bet there would be some serious hammer blow-back too.
I remember that. I think the guy was a felon or something and trying to circumvent the law… apparently the laws of physics are not so easily circumvented… what a maroon.Found it. It was an 1873 cap and ball and he egg shaped the firing pin hole so he could use a standard 1873 hammer and cylinder. The hole was so big it deprimed the .45 Colt cases and blew the hammer back and the gun went full auto.
I remember that. I think the guy was a felon or something and trying to circumvent the law… apparently the laws of physics are not so easily circumvented… what a maroon.
On my Pietta 1873 BP revolver, the cylinder diameter is 1.680".
The length, including the ratchet is 1.875".
The firing pin is an oversized beast, with 1/2 of it shaved off like the one in the picture below.
The frame has an oval for the 1/2 circled firing pin to go through, but it's offset to one side.
There is no way one could simply open the passage up more centered and expact a primer to stay in the case.
AntiqueSledMan.
Uberti also began using a shorter cylinder in the later years of this gun so that a cartridge cylinder could not fi into the gun without modifying the barrel and forcing cone.Not the conversation I'm talking about. He's not a felon. He's a SASS shooter and has plenty of cartridge guns. There used to be a lot of talk on various forums about converting them. Most people thought all you had to do was get a hammer and cylinder for a cartridge firing 73 but the C&B 73 has an offset firing pin. On this particular forum somebody said something about enlarging the firing pin hole to accept the new hammer. I said it wouldn't work because it would decap the cases when it fired. That's when he came in and said he tried egg shaping the hole and not only did it decap the cases it blew the hammer back and if you still had the trigger pulled it would keep firing.
Vibratory table is a device that is used to compact loose material like a sand, soil, metal dust, etc, when it is in a jar or pot. It could be also used for cleaning with some kind of abrasive.Second, what the heck is a vibratory table? Sounds like a repurposed waa-waa bed from the NoTel Motel.
Might be easier to just ask - what tools do I need to get in addition to my normal loading tools? We are still in the "this would be cool" talking about it stage.
This is fascinating, and well timed, as my son was just yesterday asking about using my New Model Army with a conversion cylinder to shoot 45 Colt black powder loads.
I have loaded smokeless for about 20 years, so I'm still well into the learning curve. Only cartridges I've ever done in the Holy Black is paper ones for my CB revolvers, and...the jury is still out on that one. Just because I haven't really mastered it.
So, the question I have after reading all this is first - do I need a separate powder measure? I am guessing that would probably be a good idea. Second, what the heck is a vibratory table? Sounds like a repurposed waa-waa bed from the NoTel Motel.
Might be easier to just ask - what tools do I need to get in addition to my normal loading tools? We are still in the "this would be cool" talking about it stage.
This one may get you close. Be aware that the cylinder gap on a revolver will cause a pressure and velocity loss. I’ve heard numbers like 50 fps per .006” or something like that. Nobody knows for sure and the only data I’ve ever seen was compiled using modern propellants in cartridges like the .357 magnum. Anyway… here you go…Just stumbled upon very interesting thread "Full Power 45 Colt Loads" on https://www.cascity.com/forumhall/index.php?topic=57532.40 , and post by medic15al, Reply #42 on: June 04, 2016, 01:07:18 PM:
The load is 40 grns of FFFG (3F) Olde Eynsford under a 250grn PRS Big Lube bullet. All loads fired 10 feet from chrono.
Uberti 7 1/2 Bbl:
1. 1028
2. 1049
3. 1018
4. 1026
5. 1010
Average 1026.2
I was looking for a website biglube.com, to show the picture or illustration of PRS Big Lube bullet, but, unfortunately, I cannot open it. This is the only one I could find:
From https://www.cascity.com/forumhall/index.php?topic=23431.0
Anyhow, if medic15al could squeeze under PRS Big Lube bullet, 40 grains of 3FG, if using bullet 45-300-BP-2 I designed (see post #24), because it is shorter from crimp groove to the bottom for about .035", that would mean additional 2.5 grains of black powder. Not much, but every grain more counts.
It would be interesting to see how much velocity 45-300-BP-2 will have under 42.5 grains of black powder out from revolver with 7.5" barrel?
Is any program that could calculate muzzle velocity from revolver using black powder?
This might represent the Hazard cartridge from the 1860’s…This one may get you close. Be aware that the cylinder gap on a revolver will cause a pressure and velocity loss. I’ve heard numbers like 50 fps per .006” or something like that. Nobody knows for sure and the only data I’ve ever seen was compiled using modern propellants in cartridges like the .357 magnum. Anyway… here you go…
This one may get you close. Be aware that the cylinder gap on a revolver will cause a pressure and velocity loss. I’ve heard numbers like 50 fps per .006” or something like that. Nobody knows for sure and the only data I’ve ever seen was compiled using modern propellants in cartridges like the .357 magnum. Anyway… here you go…