What is the difference between rim-fire and centre-fire?

If there is a unusual, mechanically peculiar, or historically important firearm, the odds are good that ‘Gun Jesus’ has a video about it, and has probably used it in a backup gun match, and fortunately he hasn’t had to descent to pandering for clicks with stupid humor like Garand Thumb or Rich Rebuilds to beat the infamous “Youtube algorithm”.

Stranger

Many still do. 357 Magnum revolvers can use 9mm auto rounds with moon clips. 45 Colt revolvers can shoot 45 ACP with moon clips. Some cylinder mods might be required, but could be available from the factory already fitted for same.

Thanks to everyone for a very informative set of answers. Appreciate it.

Well, sort of. Generally you need to replace the cylinder to accept 9mmP because of the tapered case and need to accommodate the moon clip. The bullet diameter is close enough (0.355 inch diameter for 9mmP, 0.356 to 0.357 inch diameter for .357 Magnum and .38 Spl) that it can be done safely but you may not get quite as good of a seal. In general, if you want to shoot 9mmP in a revolver for some reason you should purchase a revolver specifically chambered for that round.

Stranger

Only the lack of ammo has prevented this from making an appearance.

A mouse gun that not even mice are afraid of.

That would be ideal, but I know some revolver shooters that shoot both with the same cylinder. They may have had some modifications made, but it’s been a while since I’ve seen him.

They’re out there I’m sure but probably a compromise between both. I know that when Ruger made the SP-101 in 9mmP they made a separate version and I watched someone try to prove that you could shoot the 9mmP in the .357 Magnum version but the 9mmP wouldn’t go all the way in because the case is tapered and is ~0.010 larger in the aft end than the .357 straight-wall case…which I told him.

Stranger

Current, similar, fun,

Shooting .38 Super in .38 Special and .357 Magnum revolvers

Should I hijack, or should I start a new thread? I’ll hijack.

GIVEN: There has been a zombie apocalypse.

ASSUMPTIONS:

  • George Romero style slow zombies;
  • Given sufficient prudence, weapons other than firearms should be sufficient;
  • Scavengers are more likely to look for ammunition rather than ammunition components and reloading dies.

It seems to me that black powder would be easy to make, after some experimentation. Perhaps guncotton could be used to make a form of smokeless powder. Primers could be easily stamped from sheet brass from hobby stores, and filled with mercury (II) fulminate. Lead bullets would be a piece of piss. Reloading presses and dies, following Assumption III, should be fairly available. Spent brass is usually found where people shoot (especially if you police your own brass). So I think that manufacturing new, centerfire ammunition would be reasonably do-able.

I think, though, that .22LR would be the most useful ammunition in the situation (unless you’re killing living people). The problem is that ‘nobody’ reloads .22 rimfire. Could you do it, given that the rim is crushed at one point? Could you make new cases? How? Suppose you made your mercury (II) fulminate? How would you get it into the rim? Put some in the case, put a dowel in the case, and spin it with your hands?

ETA: I have a Harrington & Richardson 999. Haven’t taken it to the range yet; only dispatched a couple of unfortunate mice. Seems like a good ‘post-apocalypse’ tool.

Looks like I found an answer.

tl;dr: Form a ‘capsule’ out of sheet brass. Flatten the rounded end into a rim. Put in some primer material and spin it. (I’m thinking of a dowel inserted into a drill motor.)

No, I have a zombie apocalypse contingency plan and .22 is not a good idea. The answer is 4.6×30mm. Sure it’s impossible to find, but according to the authoritative source Zombieland, it’s lying around everywhere.

I believe there has always been a trend in both Canada and the United States to treat .22lr weapons with fewer restrictions than center-fire cartridges because you can’t really use them to shoot through body armor or car doors or any other form of cover. There have been mass shootings with .22lr weapons in both countries but they don’t cause as much comparable death compares to larger bullets.