20 Nosler?

N8Will

N8Will

Member
Anyone built one of these yet? Trying to figure out if it is worth the trouble over the 204R. I'm looking for a just a little more velocity over my 204 without as much recoil or fur damage as the 20-250. I like watching coyotes fold up in my scope. I'm looking for 4k out of a 20 to 22 inch barrel with a 35 grain Berger. I know you can get close with a longer barreled 204 but I want to keep it short.
 
Sounds like an interesting project, give us a report on how it works. Someone always needs to be first.

I've been looking at that case since it came out to build cats on a Mini/527/461 action.
 
What about a 20 BR?

I think there are a few 20 BR shooters on this forum. The gunsmith that built my 20-250 has built a 20 PPC that turned out really well.

The 20 BR would be about the exact same case capacity as a 20 Nosler, but with much better brass.
 
Bunch of members here ran 204 ai and I believe got the speeds you wanted. I think they were pushing 4300fps with 40 gr Berger and a 26in barrel. Ought to be able to get a 35 close to 4000 in a 22 in barrel. I used to push 40gr Berger’s at 3950fps with re 10x in a 204ruger 26in Ruger VT

Should be plenty to read if you do a search.
 
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The 204 Ruger is basically an "improved" 222 Rem mag with a 30 degree shoulder and the 222 Rem mag Ack Imp w/40 degree barely gains anything over its parent case so a 204 Ruger AI will gain next to nothing over the standard 204 Ruger. If someone is getting even 4000fps from a 40gr in a 204Ruger AI they are doing so at pretty high pressures and any velocities over that, will be extremely high.
 
So who's going to build a 20-5.6x50 Mag Improved, 3mm longer than the 204 brass. Straighten the body, 40 degree shoulder and move it forward enough for a .21 long neck. About as much as you can get out of a .378 case head. In Australia they neck the 5.6x50 Mag up to 6mm for shooting Roo's they call it the 6x50mm. Heym brought out the 5.6x50 Mag for shooting Roe deer in Europe to meet the min energy requirements. I shoot a 5.6x50 R Mag for coyotes in one of my combo guns.
 
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Originally Posted By: AWSSo who's going to build a 20-5.6x50 Mag Improved, 3mm longer than the 204 brass. Straighten the body, 40 degree shoulder and move it forward enough for a .21 long neck. About as much as you can get out of a .378 case head. In Australia they neck the 5.6x50 Mag up to 6mm for shooting Roo's they call it the 6x50mm. Heym brought out the 5.6x50 Mag for shooting Roe deer in Europe to meet the min energy requirements. I shoot a 5.6x50 R Mag for coyotes in one of my combo guns.


That sounds interesting too. AlsobI forgot about the .20-225CG ( Coyote Getter) based on 225 win.
 
Already have a 20X6.8 and a 20 LBC. They are fast litt boogers at about 125-150 faster than a 204. Brass making takes some time but is done easily with a set of bushings.

Greg
 
I would love a 20 BR but they don't feed %100 in a bolt gun and that is a must for a coyote rifle for me. I have considered AI. Think that may be the route I go. At least I won't have to worry about brass. Not sure if the 22 Nosler is going to be here in 10 years. Thanks for the info on 204 AI
 
I'm doing a .20 GPC from MDWS. Users have posted some 39 grain Blitzking loads in the 4200fps range. I should have my AR completed within a few weeks and will post up some results.
 
Originally Posted By: N8Will I would love a 20 BR but they don't feed %100 in a bolt gun and that is a must for a coyote rifle for me.

I already had a couple .20BR's when I built a .20-250, because I wanted a reliable bolt gun repeater.

It eventually got chopped to 19" (suppressed), only runs a flat 4k w/38s now. Undisturbed sight picture through the scope (suppressed).

- DAA
 
Wow, I just looked at that .204AI thread.

Whole lot of not understanding what is going on in that thread... Barely any increase in capacity, but a HUGE increase in velocity. Hmmm... A lot less capacity than the .20-250, but equal or higher velocity. Hmmm...

Sounds like everyone figures it's because it must be an incredibly efficient case design
grin.gif
. That would be pretty funny, if it wasn't so typical around here.

- DAA
 
Originally Posted By: DAAWow, I just looked at that .204AI thread.

Whole lot of not understanding what is going on in that thread... Barely any increase in capacity, but a HUGE increase in velocity. Hmmm... A lot less capacity than the .20-250, but equal or higher velocity. Hmmm...

Sounds like everyone figures it's because it must be an incredibly efficient case design
grin.gif
. That would be pretty funny, if it wasn't so typical around here.

- DAA

You don't understand budgets? You know where you do more with less even if the prices go up? (VBG)

There are adages and common knowledge of things in the world such as: Two can live as cheaply as one and 75% case capacity can run faster than the bigger one every time. And the mantra of many, "it didn't blow up so it's safe" in concert with,"the lawyers make all the companies hold back on the true potential of the cartidge."

Greg
 
DAA, I have read all writing on your Web sight. I'm a little leary of there velocities out of this case also. In your opinion do you think this case AI with a 22 inch barrel would get a 35 berger to 4k?
 
DAA Have you been using you 20-250 more or still taking the 17 Predator? I'm wondering what bullet and what kind of fur damage you are seeing with the 20-250
 
Originally Posted By: N8WillIn your opinion do you think this case AI with a 22 inch barrel would get a 35 berger to 4k?

The .204? Or the Nosler? I'd expect 4k with a 35 in the Nosler to be quite doable. Just based on capacity. No experience with it.

I wouldn't bother to AI the .204 myself, but, I do lots of things other people would bother to do, so...

A lot of guys do run the 35 Berger at 4K in the plain .204. Berger's own data, in a 26" barrel, doesn't get there though.

No replacement for displacement.

I mostly went back to the .17. Last year, after putting a suppressor on it, I did run the .20-250 quite a bit too though. It's a lot more fun to shoot with the can. Using the 38 gr. Unmussig, it's not too bad on fur, most of the time, but does occasionally blow out a pretty good exit chunk. I tried the 39BK in it for a bit last year too, thought I might get away with it at only 4,000 fps since the barrel chop. But ran into some splash that cost me a couple coyotes and abandoned it, went back to the 38U, no more splash.

- DAA
 


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