Above was discused in great detail at shooters with a lot of good ways to fix em. Here's another.

Tools required: Any single stage press.
Any junk or unused loading die
with mouth smaller than 1/2in.
A 1/2in dia. ball bearing.
A Lee push thru sizer punch the
same size as the gc or larger.
Something to stick the bearing to
the mouth of the die (Boolet lube,
heavy grease, super glue ect.)

Install sizing punch in press ram, lay a gc on it butt side down and raise the ram.
Stick bearing to die and install in press turning it down until it touches gc (the bearing will self center the gc) now adjust the die down 1/16 turn or less (just like adjusting for flair or crimp) until you feel the gc open up very slightly
try the gc on boolet in ? adjusting until it fits the way you want it, lock the die down.

When your set up you can knock out a 100 gc's pretty quick.

The 1/2 dia bearing will work for 7mm, 30, and 8mm
and maybe others, these three are the only ones I have tried (smaller gc smaller bearing, larger gc larger bearing, maybe).

If your push thru punch will fit the ram up side down, you should need only one to fit all gc sizes

Just another idea that works good.

Calamity Jake

Jake I wonder if anyone has ever tried these undersized vs a normal check fit for accuracy? I wonder if that shank consistently botttoms out into the shank and gives a completely square base? As I'm sure you know any kind of offset at the bullet base shows on the paper. I would think you'd have to bump bullets fit with an undersized to get a good square base?

Another angle is using the case mouth deburring tool and running that around the shank edge to allow that area to enter the check.

A ball bearing with a small hammer works, with the check facing up on a flat plate. Also, I use a custom punch to open the checks for my accuracy loads, which assures the bottom of the check is round and square. The latter method is slow, and takes finger work to get the check off of the punch. ... felix

Calimity..good idea...don't worry about what the BS Troll says.

Calamity
Unless you are shooting some serious match with cast I wouldn't worry much about exact fit of the bullet shank in the gas check. If these are just for you casual plinking and target practice just load them and shoot them. You might just load a few and try them but I seriously doubt that they will be terrible inaccurate. I've opened up some checks before like Felix mentioned and they shot just fine.

If you have access to a lathe, it is very easy to make a "nose punch" for your "Lubrisizer" which will convert it into a GC sizer. That's how we convert .375 GCs into .411 or .416 GC's.

Just make the nose of the punch to look like the inside of the GC you want to end up with. To use, just lay the GC on top of the base punch in the correct sizing die, and run the nose punch down into it. Push down on lube-sizer handle until the GC just barely goes into the die. Pushes the GC back out of the die when you raise the handle (and the base punch).

To make it even slicker, use a spare lube-sizing die of the correct size, and spin a piece of crocus cloth in it just long enough to open it about a half-thou. That will leave interior diameter of GC large enough to easily slip over proper sized GC heel of bullet.

Naturally, you probably won't want to use that very slightly enlarged die to size your bullets. Reserve it just for making GCs.

AC

[ 10-14-2003, 23:17: Message edited by: Alberta Canuck ]

Albert your almost to the stage of making a check out of a flat piece of material. I think with a few refinements you probably could.

You'd have to find a way to punch out uniform disks for shaping though. Sounds like an idea to utilize cans etc like that gadget marketed by [?] some time ago. Has potential.

Thanks for the replys, After casting some 311299 from a new mold and finding out that 3 different lots of Hornady gc's would't fit I remembered the felix trick with the ball bearing which worked good but I wanted something more consistant (my fingers were getting real sore from that claw hammer I was using!!) Yah I know, keep your fingers out of the way dumby!!!

After a little thought I came up with this idea. Works real good and is real consistant, it is easy to control how much flair is put on the check because to much will concave them more than they are out of the box, (not a good thing) and it makes them more difficult to crimp on.

Give it a try, I think you will like it.

Calamity Jake

jake...your method works and I've used it. I've also used the punch from an M die and anvil setup. The same principle.

I have a couple of moulds that drop bullets with big shanks. My fix it to chuck a round top punch for a bullet larget than what you're using in a electric drill and throw a slight bevel on the corners of the shank (don't overdo this operation). Takes a few minutes to do a hundred.

Usually, this allows the GC to start with no problems and then my nose first rig seats the GC straight and bottoms it.

Works very well.

If you're a reay purist, you can get a sizer of he correct diameter and size the GC shank. Me and Orygun Mark have been playing with this in GCing some plain base .358s for the .35 Remington and it works well./beagle

No BS...Easy to cut uniform metal disks. Pick up a Cornell wadcutter of the appropriate size from Fred Cornell. Cuts precision aluminum disks from pop cans as fast as you work the handle of a press.

The problem is to keep the disk centered while seating the bullet. It needs to be preformed and this takes some fairly precision, hardened tooling.

We've succeeded in checking PB bullets a la Frechek but they always end up a tad off center.

The bottom line is you can buy about 15K of Hornaday checks for the $$ you use to produce the first pop can check./beagle

Jake,

Most of the ideas you've gotten so far are Hand intensive to say the least. Most all of us go the extra step to get throught these small but troublesome problems. Using the next size larger gas check will take care of most cailbur's very easily. When I need a bigger gas check, I do just that. Get the next size bigger. 311299 and all the rest of the 30 cal boolits can be handled with a 32(8mm) gas check. 25's you go to the 6.5mm, 6.5 use 7mm, 44'a go to the 45 gas check and so on. The only problem so far is with the 45 checks on 44's. They don't always go on straight, but I can tell you the they shoot as good or better than forcing a too small check to bugger up the lead boolit. I compared with side by side shooting these large checks and found in some cases they will group better. ....Geo

George I thought everyone did that..LOL

That does work well, especially if you anneal those checks soft. You do need to use a method to size in the manner of a luber or base first because using a Lee push thru doesn't work.

And your most correct again-- often those oversized checks shoot better.. I think due to added strength in the bearing surface [?].