Home Forums Hunting & Shooting Custom Rifles & Wildcats New Thumper........

For coyotes and such......



700 short action, in stainless steel, of course

Kampfeld bolt flutes

PT&G .250" lug

22" Krieger 7.7" twist, .680" at the loud end

McMillan Marksman stock in Gap camo with 3 studs and 2 flush cups

Nightforce 3.5-15x50 in Seekins rings, setting on a 40 MOA Nightforce base

Chambered in 22-204......

I like it. Who fluted your bolt?

Nice. You leaving it silver?

Kampfeld. I was editing the post as you asked.

Yeah, probably so. Cost get you half way to a barrel.....

Now I've really got to get one of those Marksman stocks! Great looking rifle there!

beautiful.

I really dote on the Marksman. A perfect stock off the bags for p'dogs, bipod for varmints, or offhand for the runners.

Kicks the snot outta a Varmint, IMHO.....

Very nice,I really like the Gap Camo,who did you use for the smith?

Chambered by my BR smith in MN with my reamer.

I'll bed it myself if I see a need.

I did a SAKO in that caliber about 3-4 years ago. Neat round, about the max one can get from that boltface and format.

True. The only one that beats it is the 5.6x50mm Magnum. Brass is as hard to find as a dodo bird, and costs more if you can find a hoard.

First off, very nice rifle, I can dig it.

However, what gains do you get from this cartridge? Seems to be about a 222 mag AI'd or something. How much better can it be than said cartridge or a 223 AI for the troubles?

It already has only .0015 total taper in the body and a 30 degree shoulder that's blown forward over the 222RM, ala Gibs.

The provisional picture tells a thousand words....

Left to right for comparison,

221FB - 222 - 223 - 223AI - 222RM - 22-204

I was gonna say the same thing. Sweet looking rig, but I thought the 204 was a necked down 222, so a 22-204 would just be a 222. Of course the pics appear to be a bit bigger.
Sweet ride. How much does it weigh and out of curiosity, how much does it cost to build something like that?

204 was/is sorta a 222 RemMag with the shoulder moved forward and necked down. As you can see, powder capacity is maxed out for that series of cartridges. To get more, you have to go up to the larger case head series of rounds a la 22-250 (30/06 case head size)

This method that Rocky Gibbs developed is a wildcatting technique that hasn't received the recognition it deserves. I've used the technique of moving the shoulder forward, increasing shoulder angle to 35 degrees, and reducing body taper to 0.007"/tpi in several wildcats based on the 300WM case and found it produces the maximum case capacity possible for any case head diameter. All while reducing apparent bolt thrust, as Gibbs claimed. There's no free lunch so the downside is that chamber pressures can get frighteningly high before bolt lift starts to stick. After that, disaster is a couple of powder grains away IME.

Which is why I do not use the sticky bolt lift method of waiting for prerssure signals. Nor do I rely on proimer inspection or case head marks. Especially not with AI'ed or other staight cased wildcats. When my chronograph says I have hit the speed I should get with the powder and case and bullet I am using, I quit. I was not always that way, pounded the heck out of a few bolt handles to get them open back when I was trying to magnumize my 30/06's and what not.

Nice pic, thanks.

So what are the velocity gains over a 223AI say with a 69-75 gr bullet?

thanks....

aalf,

Very impressive, I've been thinking this cartridge for some time and remember talking with sfhunter here about his.

Makes much more sense than to AI a 223.

No fire-forming needed.

Have you tried seating a boattail bullet in the mouth and sending it up the seating die and have instant cartridge?

What powders work best in it?