In order to participate in the GunBroker Member forums, you must be logged in with your GunBroker.com account. Click the sign-in button at the top right of the forums page to get connected.
WILDCAT TWENTY TWO - TWO FORTY THREE
ENBLOC Member Posts: 327 ✭✭
edited December 2017 in Perry Shooter Competition Shooting and Reloading Forum
Looking for any hand loading data for this Wildcat cartridge. My chamber is the 243 necked down to 22 caliber. No changes in shoulder angle etc. What would you use this cartridge for?
I assume it's the middlestead wildcat not the AI or a sharp shouldered variant...
It's a varmint round I think...
A google Search provides a surprising amount of data
I simply entered ".22-243" and from the search results chose the middlestead over the AI...
I have a pair of odd wildcats - but have never seen or heard anything about yours - and you don't seem certain what you actually have.
No-nonsense probably knows more that anybody else around and should be able to point you towards better data sources
Other than a chamber cast and it's specific dimensional specs for better experts than I to assess I am uncertain how to absolutely identify your chambering
But there is a good starting point accumulation of info to be garnered from the aforementioned google Search results
I measure the wall thickness with digital calipers when I neck .375 H&H down for my .340 Whby and set my neck outside reamer accordingly. The calculation I use is to start with the dimensional specs of the cartridge you are building and subtract the diameter of the bullet, .224 in your case, from the outside measurement of the case after sizing then the voodoo starts - I allow .003/4 for bullet grip and ream off the rest. With a 6mm case the outside measurement of the case at the mouth is .276 and the outside measurement of the neck at the mouth of the 22-250 is .254 (just a close example to yours). With a grip allowance of .004 the outside measurement before inserting the bullet should be .250. I load a dummy case - no powder no primer and try it in the chamber if it closes without resistance I'm good to go. If there is difficulty closing the bolt then I take off a few thousandths and try again until I get a smooth factory-feeling closing.
I hope that made sense, good luck
I'm on the run for the next week or so, so this is brief.
Redfield and Leupold both make 'turn-in' bases for the Turkish Mauser with the 3-hole bolt pattern. I posted one link below so you can call Redfield if you need confirmation.
There are also Picatinney rails available in the same configuration, just look around a bit and make a phone call if you need to.
The way to determine the neck diameter is to select a bullet and seat it in a case. Take your calipers and measure the O.D. of the neck with the seated bullet.
Now you add the clearance dimension to this measurement. I use about 4 thousandths (0.004") or 0.002" per side to allow for neck expansion and bullet release. Some folks use more for hunting rifles as a 'just in case'. Check this against your chamber cast. Then try seating a dummy cartridge to see what the freebore and throat dimensions are.
Load information will require the twist rate of the barrel and the OAL of the cartridge after you check it in the chamber with a dummy cartridge. The twist established the length of the bullet which will be stabilized by the twist. The OAL establishes the case capacity with a bullet seated.
Headspace and seating depth are checked with a stripped bolt, no ejector, extractor or springs to compromise the feel and results.
Let me know and I'll see if I can find my data in the files I have with me. I'm out-of-state right now helping with my mother so have patience if I don't respond immediately.
The case neck diameter with seated bullet measures 0.2565" AND the Cast of the chamber neck area measures 0.2615" the difference being 0.005"
The Rifle barrel is stepped like a Mauser with the steps being 8-1/8" & 15-1/2" from the Muzzle. Rifle rate of twist is 1:12. Barrel length is 27-1/2 inch from crown to bolt face. Rifle is set in a Boyd Stock. Rcvr. marked TC AS FA with crescent & star in middle of AS FA & ANK ARA 1939
What handloads would you suggest? Weight bullet/powder?
If the case capacity is the same as the .22-250, or if your .22-243 case is even larger, starting with that data could be a decent place to begin.
Take it slow and carefully!
Would I start out loads 10% below max on the .22-250, or start right at the max. for the .22-250. I'd be looking for the tightest group, not the fastest projectile...