So I'm trying to figure out why all these lovely AR and HK clones on the market (in .22 LR ) all have mag capacities in the range of 20. The mags are every bit as long as .223 PMAGs and yet they only hold 20 rounds. The Ruger BX-25 is huge and still only fits 25 rds. I'm assuming this has something to do with an inability to stagger the .22LR round? What's the reason for that?
Magazines are duplicated to mimic 223/5.56 mag size?
They're single stack.
They're single stack.
Not exactly clear what you are saying Mouthpiece. The 5.56 AR/M16 mags allow the rounds to stagger left and right. The .22 mags are single stack as far as I can tell. Can't really see what's going on in the BX25 though...
Yes, they are single stack in AR/22lr mags. The mags have been manufactured to duplicate AR223 mags in appearance.
My CMMG and Blackdog .22lr mags are 25 or 27 round mags.
BX25 mags are single stack.
Because of the .22lr rimmed cartridge, staggered RELIABLE feeding is more difficult to obtain.
My CMMG and Blackdog .22lr mags are 25 or 27 round mags.
BX25 mags are single stack.
Because of the .22lr rimmed cartridge, staggered RELIABLE feeding is more difficult to obtain.
I'm going to hazard a guess that it has something to do with how hard the magazine spring presses the top round against the bottom of the bolt vs. how much that pressure will slow down the bolt of a .22LR rifle with its limited recoil and still be reliable. The only exceptions seem to be drum mags - Black Dog's 50 rounder for the 10-22/15-22 and certain AR conversion kits, GSG's proprietary 110 rounder for some of its rifles, etc., and neither of those actually get very many rave reviews as far as reliability.
.22LR rounds basically can't go much over 10 in a straight magazine, like you have in a handgun, (Ruger MK III, etc for example) and in the 25 or so round range for some rifles with a curved magazine (M&P 15-22 for example) because the rim of the cartridge case is larger in diameter than the case itself. Thus; they do not to lie right next to each other in the magazine like a center fire round does. Lay out a bunch of .22LR rounds on the table, one on top of the other and see...my explanation isn't crystal clear, but if you will do it, you will see the reason. Compare the physical structure of a .22LR round to any center fire round as well for additional detail.
There was a manufacture that made a spiral magazine. I think it was calaco or something like that.
I have not seen anything about them for a long time, and don't know if they are still in business.
I have not seen anything about them for a long time, and don't know if they are still in business.
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