Ejection where art thou?

[Wineman]

I have an Inland, and my friend has an Underwood. Both in M2 stocks, both with lug bayo bands. The only difference is his is a flat bolt, and has a M1 Mag catch, and my Inland has a round bolt (IBM) and M2 Mag catch. His was stove-piping so I tore it down to parts inc. the bolt, cleaned it, put in new springs and tightened up the recoil lug (per CMP white paper). The only thing I found was a bunch of gooey carbon in the well of the slide where the piston hits it.

I shot them both yesterday. The Underwood ran great but only likes USGI mags. Any Pro Mag, or other brand did not feed worth a ding. The Inland cares not. Any mag with ammo feeds like fat through a goose. My question is why the Underwood threw all cases forward to 1:00 and the Inland tossed them over my right shoulder (shooting from a bench right handed) behind me? They rolled under a table at the range and I had to fight the Black Widow spiders for them. I did not stretch their legs, I was just test firing after the cleaning to see function etc. At 25 yards no problem making one big hole in the shoot and see. Boy are they fun!

Dave

Information

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[browningautorifle]

Perhaps the Inland had an ejector spring change at one time for a stronger spring...? And as for Promag, I still find them a crapshoot. Not as bad as they used to be though. Some guys have no problems...

[vintage hunter]

How about bolt speed? Would it have the same effect with the Carbine as it does with the Garand?

[TDH]

Perhaps the Inland had an ejector spring change at one time for a stronger spring...? And as for Promag, I still find them a crapshoot. Not as bad as they used to be though. Some guys have no problems...

one thing about ProMag is they have a lifetime warranty. They don't work send it back and they will replace it. I had a couple Mini14 mags that wouldn't work. It took a while to get them back but it was during that time they were moving from the Peoples Republic of Califoristan to Arizona

---------- Post added at 12:44 PM ---------- Previous post was at 12:35 PM ----------

The first time you resize 30 carbine it helps to grease them . The case has aa slight taper and you are making it straight walled. After that they should size well with just a carbide die.

[browningautorifle]

during that time they were moving

Possibly it was that time frame as it was some years ago. Thing is I'm in Canada and sending them back isn't really an option, and the dealers here are less than helpful. Avoiding them and buying OEM solves the problem. The cost of sending them back would balance this out. If I was in the USA it would be different...

[b32dominator]

As for the direction ejection which type of slides do you have on them? The later type v and vi slides were curved to push the spent cases to the right more.

[browningautorifle]

That's right too...

[imarangemaster]

For mags, I only use USGI 15s or USGI 30s. Commercial mags are, as stated before, a cr@pshoot.

Ejection is , as was said, controlled by several things:
-Bolt Speed :weight of bolt )flat vs round) dwell time of bolt (caused by early vs late slide), power of load, or condition of recoil spring.
-ejector spring strength
-ejector shape (Old, versus new)
-Extractor condition
-extractor spring strength

Generally I have found late slides (type V or VI) need a late ejector because of increased dwell time before bolt opens.

Also make sure your recoil springs are not degrade. They should measure 10 1/8" to 10 1/4", if they are less than 10", they need replaced. If you shoot Aguila ammo, it is underpowered and needs a weak recoil spring to be reliable. I have one 9 7/8" spring that I kept in case I get Aguila. Enjoy you carbines.

With that said, though, it sounds like they are running great, so I would not change anything in either. I would soak the gas piston on the one with the gooey carbon with brake cleaner , blow it out with air, then soak with Kroil or Liquid wrench, blow it out, then flush residue out with acetone and blow out again.

[Wineman]

Both have new recoil springs, and the Underwood new bolt springs. The Underwood has a Type III slide (F in a heart), the Inland a Tye II. Both have the late style ejector. I guess my question is where do most of the Carbines throw the brass ahead or behind?

Dave

[vintage hunter]

It's been my observation that flat bolts most always toss the cases forward to 1:00-2:00 or so and the round bolts tend to eject them rearward to 5:00 - 6:00.