Not in a revolver; and there in lies the rub.stinkypete said Don't forget the barrel length is breech to muzzle, so if you neglect that, I got about 870 fps too. I was running off the charts and both that and your calculations agree.
The constriction on my Rossi which they were fired out of happens to be .397.
I would test it but .410 handguns are illegal in my state.
The OP question was about .410 velocity, fired out of a Judge or Governor. These are .45 caliber handguns, which just happen to be firing .410 shotshells. Velocity and performance of a .410 load, from a .410 is not relevant.
No you have a 410 chambered pistol that you can fire 45 Colts out of. I can do the same with my Marlin 1895 45/70. BFD. BTDT, I just don't have the recovered projectiles to back up my assertions from those tests since I was just after proof of concept.I don't have a .410 pistol, I have a .45 pistol I can shoot .410 shells from.
From a performance PoV it actually is. Patterns are patterns. If you have soft shot the patterns will blow more than hard shot. Bird shot out of a rifled bore will be dougnut hole PDQ. Buckshot without a wall encompassing wad will vary depending on obturation. Softer shot will obturate, copper plated hard shot will do so much less.Velocity and performance of a .410 load, from a .410 is not relevant.
No you have a 410 chambered pistol that you can fire 45 Colts out of.
Pretty sure the chambers are .410 chambers because a .410 is too long to fit in a standard .45Colt chamber.
By exactly the same logic, take any traditional .45Colt firearm and try to chamber a .410. It won't fit, and if it does, your chamber is grossly out of spec for length.Take a .410 shotgun, any one, break action, bolt action, pump lever, semi, any of them marked .410. They have chambers and barrels made for the .410 shell. You CANNOT get a .45 Colt round into the chamber. Its just too "fat" for the .410 chamber. (and if you can, your .410 is grossly out of spec)
That's not entirely true: I just loaded and closed the actions on both my Rossi and Verona 410's with a 454 Casull.You CANNOT get a .45 Colt round into the chamber.
Actually I've linked to his webpage videos several times. He does an awesome job of explaining the good, bad, and ugly of the Judge. Also in dispelling most of the myths.One of the guys was actually a respected YouTuber who went by the name of ShootingtheBull410. I'd link to the video, but I'm pretty sure that's against the rules, and it can be easily be found on YouTube by searching.
By exactly the same logic, take any traditional .45Colt firearm and try to chamber a .410. It won't fit, and if it does, your chamber is grossly out of spec for length.
I'll accept that it's not a .410 chamber. But by the same test criteria you espouse, it's also not a .45 Colt chamber. Let's call it a hybrid chamber.
That ledge is where the diameter of the chamber narrows down from being just larger than the OD of the case to the OD of the bullet so the gases can't blow by the bullet and cause leading issues and decreases in pressure.OK, I"ve been doing a little measuring, though not with my .410 shotgun, as its packed away and I'm not digging it out.
Since you've done it, with your gun(s) I'd say we are in a situation where what we have in our hands is not quite exactly the same as the published specs, and so I will amend my position to say "By the spec, You should not be able to put a .45 Colt into a .410 chamber.
And I do realize the published specs are generally the maximum allowable size, and that makers ammo is UNDER those specs by some amount, and quite possibly some chambers are oversize.
There is some food for thought in this. I need to do a bit more research, and get the .410 chamber specs to be more sure of certain things, but for now, consider these points,
Where does the chamber end? and the barrel begin? And, can it be different places in different guns?
Next, I don't think being able to shove a smaller pipe inside a larger one past a certain point means the larger pipe is out of spec, necessarily. So, I won't automatically agree about a .45 Colt chamber being out of spec, for length, if a .410 shell will go in. There's a question I need answered in order to form a more solid opinion.
My .45 Colt Rugers all have a "lip" or "step" at the front of the chamber. This step prevents .410 shells from going all the way in (in MY guns). I removed the cylinder of a Blackhawk and a Vaquero, and both the Remington and Winchester .410 shells I have dropped right in (and a rather sloppy fit) and were stopped by the step at the front of the chamber. If that step were not there, the .410 shells would enter full length.
So here's a question, is that "step" a required feature of the chamber specs? Could it be something required today by SAAMI but in the past was something left to the desire of each individual maker?
I know that in the past, some guns (usually the cheaper .38s but not exclusive to them) didn't put a step or ledge at the front of the chamber, the cylinders were bored straight through.
IF a .45 Colt chamber doesn't have that ledge, (and the action allows for the length) then a .410 shell will go right in, stopping on its rim or before, if contacts the rifling.
So, it would seem that the primary modification to a .45 Colt chamber is making it without the ledge at the front, and ensuring the .410 case isn't in the rifling, which would be a mod of the barrel, not the chamber.
I think it reasonable, pending clarification of some terms, we could consider the .45/410 a "hybrid" chamber, for now. But, I do hold that it is not a .410 chamber as found in .410 shotguns.
My other point involves the "fit" of .410 chambers in .410 shotguns.
However, I belatedly realize how we are drifting off the OP topic into details not directly related to the question. I've spoken to him, and he's satisfied with the answers he got about velocity from the Judge/Governor, so I think if we want to continue discussing the nuances of .45/410 chambers, we should do it in its own thread.
So, if'n y'all wanna play, I'll start one, or you can, if you get to it before I do.
The "ledge" can still be there in .410 revolvers because the neck of the shell can be a smaller diameter than the .452 diameter of the bullet,