Want.
The first because it would be funny to show up to an indoor, pistol-only range with a Mosin-Nagant (though something tells me the resulting explanation might take a while), and the second, well, just because (though I understand there are concerns over the pressures in the heavily-loaded 7.62×25 round … welding … the insert into the chamber). I wonder how hard it would be to get the latter machined out of something more stout… seems like the x25 round could be all kinds of interesting out of a longer barrel.
Also, given that absurdly-long-barrel-for-pistol-caliber-rounds, the report/muzzle “blast” ranges from “paintball marker” to “.22″ in reviews, making new-shooter training or back-yard plinking all the easier, and, of course, recoil is almost non-existent.
(Found by way of a bunch of Bambi-whackers.)
I dunno. I’d be scared to shoot anything but maybe a carbine-length Mosin with the .32 Adapter as I’d be worried that the round might not have enough pepper to clear the muzzle, especially if there is any fouling on the rifling.
And I wouldn’t bother with the 7.62×25 as that bullet is 0.308″, while the commie Mosins are 0.311″ and given some bore erosion from corrosive ammo and general service life, I would be surprised if you wouldn’t get a bunch of keyholes and wild groups.
Given how cheap 7.62x54R surplus is, this makes zero sense to me.
Meanwhile a CZ .22 bolt-action would give you everything without any of the drawbacks. Sure the CZ costs a bit more, but they’re worth it!
My big objection to these is that you need at least 5 of them for magazine fire. When I first saw them I thought they were more like “chokes” that sat in the barrel.
But what I really want is an adapter that will let me use AK ammo in my MN.
I wouldn’t worry about the Tokarov round doing anything to that insert. However, if I’m wrong a stuck round remover will effectively remove any stuck metal objectin your chamber, it is how to get a “Navy Sleeve” out of a Garand Chamber (the sleeve was a mild steel insert that turned an M1 from 30-06 to 7.62×51)
Erin, if you want one that will shoot 7.62×39, buy the 32 ACP version and have a gunsmith ream the chamber toe 7.62×39 dimensions.
@ Weer’d Beard: Why? Because I can. And, more importantly, because it would make me giggle
.
And I am not really convinced that 0.003 inches would make that big of a difference in the bullet’s flight… I mean, sure, it might not be 100% accurate (or whatever percentage accuracy you would care to assign to a surplus rifle that was probably once used as a boat oar), but it still kicks over my giggle box.
‘Course, I would be curious what x25 could accomplish out of a longer barrel, given how much powder is wasted in pistol-length barrels.
@ Erin Palette: On everything but the neck diameter, it would appear as though the x39 ammo is smaller than the x54r, so I do not see why it would not be possible, and the pressure loading on the former is lower than the latter, so that is good too. I guess the problem would be that the x39 case is only about a millimeter smaller in diameter at the base, which means it is too much smaller to just rattle around in the chamber loose, but not small enough to make it easy to form an insert around it (0.5mm-thick metal is… hm.). Dunno.
@ AM: Now that seems like a particularly useful caliber insert indeed… I assume they were meant to be more-or-less permanent?
Linoge, the “Navy Sleeve” was permanent until removed. The first shot would set the sleeve into place, and from that point on until removal the M1 was a 7.62×51 firearm. The Garand has a “generous chamber” so to speak, otherwise the sharper shoulder and less body taper of the shorter round would impact the walls of a minimum dimension 30-06 chamber.
Huh. Very cool. I wonder if such a thing could be designed for the M-N to shoot x39 ammo, since it would not need to constantly be removed and replaced. Of course, then you would have to redesign the bolt to grab non-rimmed cases, so this is all somewhat moot
.
Not exactly moot, the Mosin Nagant has a “floating bolt head design” so with an insert and aftermarket bolt head it would be as simple as a bolt disassembly and reassembly. Might have to stick the sleeve in there with some blue loctite (the x39 rounds wouldn’t have enough oomph to stick the sleeve in place). But, a stuck cartridge remover to remove the sleeve, a bolt head change and you’d be back into x54r territory all over again.
Now there you go making me wish I knew someone with a machine shop… I wonder if there might actually be a market for such a thing. Given x39 is less ballistically capable, I am not sure, but it would make the gun quieter and kick less… Hm.