Is there a short 6/284 version out there?

L

LorenC

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Reading info I see so many referring to the 6/284 as maybe bigger capacity than needed for 105vld. Only option now is to chamber the stainless Ruger Varmint for it, which it sounds will be short to feed a full length 6/284 with 95 or 105's. Not looking for max power, but better than a .243Ackley. This leads me to thinking shorten the 6/284 by a bit. Is there a version already out there, minimal clearance neck for Win brass, that would fit the order? Smith with a reamer??? Loren
 
Tons of them.


It's easy, run a reamer in short. Don't be fooled into believing that you can just make one up and shoot "minimal neck clearance" without turning though. Brass cases are manufactured with a taper in the sidewalls...........neck brass is essentially parallel but SHOULDER brass is thicker and tapers up to BODY brass which is thicker yet. You start shoving shoulders back and you will have to deal with these thicknesses and tapers. Ain't no easy run. That said, there have been a bunch of reamers made and sold with names on them. Probably the most well known would be one of Billy Shehane's creations.

Anyways, maybe this will spur some 'smith's to reply with their iterations of the beast. At one time it was the pinnacle of the 6mm mountain.

But a better choice now would be the 6X47 Lapua IMO

al
 
I shot a 6/284 held in .200 for a season. It had exactly the same capacity as a 6 Ackley (aka .24 Remington improved). And shot no better.

Before trying the 6/284 held in short, I suggest you make a case. I think that will discourage you enough to try something else.

I don't know how the Ruger compares to the Remington 700, but you can use a 6 Ackley in a short 700, as long as you don't want to seat the bullets long and still use the magazine. It's the same length, more or less, as the .257 Roberts.
 
BTDT on making cases, didn't fall off the truck yesterday.

I'm not looking to go high pressure with this project. I'd like more capacity to load it down a touch.

Am I right in thinking the next capacity down from 6/284 is the 243AI?
 
Nope. Believe the plain-Jane 244 has a bit more capacity than the 243 AI. The 244 AI (aka 6 Ackley) has even more. I use to get 3,400 fps MV with a 106-grain bullet in the 6 Ackely -- for a while. The extra velocity goes long before the accuracy. The 3,400 was with Rel-22. I got slightly better accuracy with 4831 at about 3,250.

That rifle was used for 1,000 yard benchrest, in the IBS Light Gun format. For a year and a half, I won something in just about every relay I shot, either group or score. Oddly enough, I don't think I ever won a shootoff with it. Still, even relay wins at Hawks Ridge were hard to come by.

King of the hill is he old 6/06. It shoots quite well with bullets that will stand the velocity -- the heat. Moving down, I've always had a soft spot for the 6 Ackley, as you can probably tell. Once upon a time, Jim Borden called it a big 6 PPC, and I think he was right. YMMV.
 
Charels E, I didn't say Bill was a gunsmith. But he has developed (with Dave Tooley or someone else)a short version of the 6-284 as with other caliber versions based on the 284, 6.5-284 cases and others.
 
Thanks for the help guys. I'm a little bit closer today.

I'd like to start gaining info for picking the reamer. Any of you have a 6.5/284, necked to 6mm, and loaded, but otherwise unmodified, handy for neck diameter, or know that dimension?



ps. 3rd time I'll change this. I keep leaving out things or asking incorrectly. wow
 
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LorenC said:
BTDT on making cases, didn't fall off the truck yesterday.
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Well a'scuse moi...........

so please tell us rubes what egg'ZACKly does "minimal neck clearance for Winchester brass" mean in your post?

We'll just assume all "Winchester brass" is the same dimensionally for the nonce.....

al
 
Hmmm. I could go the same route. I'm new here so I can't of already had that experience? You took it the wrong way it seems. I wasn't trying to be rude Al, sorry.
 
LorenC said:
Hmmm. I could go the same route. I'm new here so I can't of already had that experience? You took it the wrong way it seems. I wasn't trying to be rude Al, sorry.
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Thank you.

And I need to remember that I tend to aim all my replies at the whole world. Thousands of people read this board for information and I tend to answer in that sense, perhaps a little broader than need be sometimes.

al
 
In case I seem to come off like a webknowitall, I freely admit otherwise. And that's the reason I'm here. I'd like more help with this.

At this point it seems an unturned, loaded 6mm-.284 neck will be very close to .278-.280"? Can anyone confirm this? I still haven't found it in print yet.
 
I'm lost. If you're going with a straight 6/284, knowing the existing wall thickness is an issue. If you're going with a shortened version, as Al mentioned way back there, you're going to be turning necks, because you now are into a portion of the case that is (1) thicker, and (2) tapers. So pick whatever neck wall you want.

When I made up cases for the -.200, I got sore thumbs from turning the new "necks." Actually, my sequence was a little different. You can't successfully form a finished shoulder and neck from the body of the case with any commercial dies I know of. So you get it into kind of shape, and fireform with pistol powder and cotton balls, using a load giving about about 40,000 psi.

Now you're closer, and can turn necks. But I also made up a die to ream the inside of the neck -- we're talking about a neck with some creases etc. from the parent case -- and then I'd turn the outside. Now fireform with a bullet & you're ready to go.

For some, I guess this is fun.
 
LorenC said:
In case I seem to come off like a webknowitall, I freely admit otherwise. And that's the reason I'm here. I'd like more help with this.

At this point it seems an unturned, loaded 6mm-.284 neck will be very close to .278-.280"? Can anyone confirm this? I still haven't found it in print yet.
Click to expand...

Unturned WIN. Super X brass comes in @ .274 (loaded 88 Bergers)for the lot I have.
 
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