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Do they make a 30 Carbine cartridge gauge???

okiefarmer

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I ordered a 30 Carbine case length gauge from Midway last week, got it today. I accumulated a bunch of recently passed dad's reloaded stuff, lots of 30 carbine. Many loaded with the Lyman 311316 flat gas checked bullet. I took the Ruger Blackhawk out last week and the wouldn't even drop into the cylinder. I'll prolly end up pulling everything now, but wanted to gauge the bulk of them to see if any of them will seat. If they won't go in a wheel gun, they damn sure aren't going to function in any of my rifles. WTF.

The gauge I got from Midway was an LE Wilson, and I guess I just missed the detail it was a case length gauge only. A different duck than I was expecting.
 

TerryN

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Same gauge, just available from different vendors.
 

okiefarmer

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Same gauge, just available from different vendors.
The seller on egay and that second link are both the same and both have "zero" in stock. Damn

ETA:
 
Last edited:

okiefarmer

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I looks like the one made by Shooter's Box is the best one out there. It does both case length and cartridge check for chambering. Unfortunately out of stock at this time.


View attachment 214505 View attachment 214506 View attachment 214507
Reply back from my email to them.

"we are currently out of stock on our 30 Carbine case gauge. They don't have a set restock date at the moment, but please feel free to periodically check"
 

whisky_n_hot_dogs

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When I had to sort out 30-06 brass that was neck sized from the bucket of FL sized brass I used a pair of calipers to check critical body dimension according to SAAMI drawing.

Look at the dimensions where the body taper meets the neck. Set calipers to 0.338” and find generally where on the taper that dimension lies. Either its right by the neck or further down the case body. It’s not precise measuring but it will be very obvious if the case was properly sized.

Also double check neck diameter to make certain the right size bullet was used.
2A3748CC-FF07-4B33-828D-8E39167697CC.jpeg
 

okiefarmer

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When I had to sort out 30-06 brass that was neck sized from the bucket of FL sized brass I used a pair of calipers to check critical body dimension according to SAAMI drawing.

Look at the dimensions where the body taper meets the neck. Set calipers to 0.338” and find generally where on the taper that dimension lies. Either its right by the neck or further down the case body. It’s not precise measuring but it will be very obvious if the case was properly sized.

Also double check neck diameter to make certain the right size bullet was used.
View attachment 214611
I just ran a handful back through the sizer die (no decap pin). Previous to this they sat proud in the cylinder a good .05, preventing cylinder from rotating. After a resize, they still say proud enough to hang up part of the time. Then I thought primer not seated, nope, that’s not it. Then I went and got a different box of reloads, they all dropped in and cylinder rotated. Same thing with some of my Korean milsurp.

I measured the case length and got right at 1.30 on many of the culprit rounds that didn’t seat. Me thinks dad never trimmed his 30 carbine brass. I just ran across some multi fired (and stretched cases, and also maybe some 1x cases.

Seems like I’ve read that the 30 carbine military rifles are rather loose chambered and more forgiving on headspace. I may just have to sit in my manchair some evening, and drop rounds on the cylinder removed from pistol. Segregate those that fit and those that don’t. Run the out of spec rounds through the rifles, then trim everything.

It’s the little details that screw things up, but I never though a guy would have trouble dropping rounds in a wheel gun. I like this 30 Carbine Blackhawk. Fun little gun to shoot
 

tac-40

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Just a thought. You could make your own or have one made for you. Just get a piece of brass about 1 inch diameter and drill a hole though the center using a "O" drill bit (.332" dia). Use an "R" and enlarger the hole to a depth of about 1¾ inches. Then take a .30 carbine chamber reamer and ream to the correct depth. Since this is brass use plenty of lube and go slow. Use a factory round to check for correct depth. If the original hole isn't large enough for the factory bullet, run a "P" drill bit thought it to enlarge it. This should give you a reasonable facsimile of the M1 Carbine factory chamber and let you do drop in testing. Here is a link to a chamber reamer that won't break the bank.


Edited to add the reamer dimensions for reference:

 
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