Doing some tweaking on the M1 set up for feeding with factory loads. Spire points are fine but the big round nose bulles jam once in a while. Going to pull things apart tonight and go over a couple things........
There's another company that uses the 30 M1 carbine cartridge case for their ammo -- may be the same one as the 17-30 cartridge in your post. They have a full set of calibers and I think they all run around the same length. Take a look at this url location for the Garin ammo -- the cartridges come in 17, 20, 22, 6mm and 25 caliber. www.surestrikesystem.com/ I don't know what the COL is so I don't know if they will fit in an M1 carbine magazine -- I went through all the info they have on the site but no luck on any COL info. The cartridge system might work nice in a switch-barrel setup of some type. If only there was a magazine that would work.
Last Edit: Sept 17, 2012 7:22:26 GMT -5 by 22boomer
No answer back from the sure strike people. Talking to Manso Reamers about some more custom work so will look at the 17/30 and other possibilities he's got. Just finishing another 30 Carbine upper so there are some users out there.
I asked the question over on another site that Garin has ad's on. Maybe I'll get some info at least on the 20 and 22 garin. An alternative that's not a proprietary cartridge is the 5.7mm Johnson or 22 Spitfire that was actually available in an M1 Carbine package so it fits in the M1 Carbine magazine. The info I have shows it came in either a 40 or 50 grain bullet with the 40gr rated up around 3000fps out of the Carbine. I saw a picture of the cartridge and was surprised that the bullet looked something like the little Hornady 35gr V-max but without the plastic tip. The over-all length was listed as 1.65" but sure wish that a bullet that was a little more pointy could be used. In an AR type setup a 20 and 22 version of the Johnson should feed well without too much barrel extension mods. Would really be nice in a light weight M1 Carbine with a good barrel. Just a thought.
I agree on the M1 Carbine platform. Had a chance to get one couple of months ago for half of what I've been seeing them go for..... dummy me...... Definately would like to experiment with it a bit along with the Ruger Mini and the Chinese SKS's available. Have looked at the Johnson & Spitfire also. Still comes down to reamer and dies and finding a "standard"
I don't have any direct info on the Garin rounds but I do plan on calling Paul Garin sometime this week to verify lengths and find out what the COL is for the 22 Garin with the 40gr Berger bullet he lists on his spec sheet. Below is a reply I got back from another site from a fellow that uses the 17 and 20 Garin.
"I got a CZ527 in a switch barrel in the 17 & 20 Garin. It is built on their 22 Hornet action using the CZ 221 magazine and there in plenty of room left lengthwise in the magazine. I don't know how this info would help you for a 30 Carbine magazine. Anyway Garin lists their case/ brass length at 1.290" max. My formed case avg. 1.275 ". For my 20 Garin using the 32 grain Z-Max the COL is 1.767" at .010" off the land. That leaves approx. .153" of bullet base in the case neck. The 32 grain Z-Max by the way avgs. .645" long. My 17 Garin COL. with the 25 grain V-Max is 1.766". By the way the COL of the 20 Garin using the 32 Z-Max to the lands from the bullet ogive is 1.358" and for the 17 Garin is 1.402". As suggested before a call to Paul Garin and he probably could tell you if the 30 Carbine and magazine would work.
I know I will most likely never see a carbine built for one of these rounds or for a 5.7 Johnson but talk and posting is cheap and stuff like this is always fun to at least talk about.
Yep, not to mention typing is inexpensive too! The 30 Carbine mags will take 1.68" + / - and I know Manson lists a 17/30 carbine on his reamer list. What OAL is I don't know, but only one way to find out. The we are back to those pesky dies......
Too bad Manson doesn't have a reamer similar to the 17/30 but something like a 20/30 -- you could call it the 5mm PDW if you did a carbine up in that caliber. The 20 caliber might handle wind and stuff better than the 17 caliber. A 5mm PDW would be a one-of-a-kind -- all the others are either 4.6X30 or 5.7X28 -- a 5mm would be right in the middle. The 17/30 is a nice round an I believe it's also known as the 17 PeeWee and makes for a good varmint round. This is the 17/30
It got a fairly nice shoulder for feeding in a semi-auto -- maybe a 20 could be in the future. Again, posting is cheap -- I can't afford the real thing anymore.
Last Edit: Oct 29, 2012 5:06:23 GMT -5 by 22boomer