22-250 to .243 rebarrel

[Brad Y]

Why not the 6SLR?
http://6mmar.com/Super_LR.html

AI did one on here not long back and was well chuffed at its performance.
Its a 6mm, its identical performance to 243 but slightly different cases and no fireforming needed. Just one pass through a die and shoot.

[MISSED]

but if you use the same brand of brass and same pills you wont be able to neck size in case you use the wrong ones in the wrong rifle. FL sizing each time yrrrch.

So if you want to stay 6mm you could try a 6x47 lap

Convinced?

I have a 6x47L as my 6mm Varmint Cartridge.I load 75 V-Max to 3750fps.This is 300-400 fps faster than ADI 243 max loads and I am using the same amount of the same powder .I went 2 grains higher before I found pressure signs at the primer.This is at a 22" barrel length not the 24" that ADI used.

Ken Melgard is getting 3150 fps using his superb 103 grn Projie again 300 fps faster than ADI 243 max loads.

I know I am comparing standard 243 velocities to the Lap case but in most cases the Ackley cases give you a 10-20% increase in velocity which brings as you now to the Lap case.

Also the 30 degree shoulder of the Lap case will feed better in most actions than the 40 degree Ackley shoulder.

As has been stated here and on other sites the 6 SLR is what the 243 should have been.

[mick_762]

I gotta admit, that 6mmSLR looks damn good on paper,

Though we are getting away from what I will be actually using the cartridge for, 70 - 100gn projectiles, not whopping great 115gn torpedo's.
Remember hunting rifle, not benchrest 1000 yard rifle.
Mick

[Camel]

Good job Con, it wont take much convincing once the idea is embedded in his skull.

On a bit of a serious note, I reckon that the main thing about the Ackerly rounds is as Con said, the Wow factor, I really cant see the benefits of most of the rounds that are improved using his formula. Yeah, you get a bit more speed, I think that this would be more important using fast twist long range target rifles which can use the extra speed and higher bc of some of the target bullets. For normal hunting, well I spose that it all comes down the what the owner wants. I had a 257 Roberts in an older M77 ruger, Ackerlyed, I was a bit carried away by the extra speed and all the hype that went with it, (thanks Uncle Nick), but the bloke that did the job either had a bad day or gave the job to the apprentice, excess headspace = case separation on the first shot, you beauty, back to the shop, "OK we have fixed the problem", out again to the property I had a range on, yippee, blown case first shot. New barrel and back to standard Roberts, lost money on the dies, but ended up a happy hunter, if I had known what I do now, I would probably still go down the improved road that I did, but would make sure it was done properly.
As to the lengthening, its probably not going to be much of a problem to trim the original over the life of standard brass, 100 brass shot 10 times = 1000 shots, by that time the average bloke would have trimmed a couple of times, and probably lost a fair few of the original 100.

If its what you want, go for it, I just don't think its worth the extra effort these days.

Confused yet Mick, Good

[mick_762]

Camel, ..... err YEP !!

With all the choices out there, and what I will be doing, yeah I still like the Ackley, but for WOW factor . . getting hard to go past that 6mm Super LR
I think dies and the reamers would be the most expensive even after a PacNor or Shilen gets screwed in.

[Brad Y]

Hunting rifle
viewtopic.php?f=2&t=14819

[mick_762]

damn you

Ok so I need to talk to AI now. . .

[Brad Y]

For the record I still have my bakers special stock and im still not a fan of it, but try to find something else that suits a LH remington

Load the 87 vmax in it and you will decimate all...

[mick_762]

For the record I still have my bakers special stock and im still not a fan of it, but try to find something else that suits a LH remington

Yeah mate, i know your pain, the missus is a lefty, one of the reasons for the 30-30

[Glenn]

I use a 6x47L with 67 grain Copperheads with devastating results!
I was going to build a 243AI but was told by my Gunsmith that the Lap would be
better! He was right!

My nephew has a 243 that he shoots everything with.
He only runs 75 gr Vmax's with great results!
He is building a 6x47L!
1in10 twist barrel.

Worth considering.

Glenn

[Camel]

If it shoots anything like Missed's it would be a beauty.

[Con]

I considered a 6x47L as well, really like its performance. But in the dark from the back of a ute, its brass to cry over losing and I'm uncertain if plinker brass is able to be made from 22/250.
Cheers...
Con

[Brad Y]

There is a bit of work to make brass from 22-250. Much easier overall to just run 243 cases into a 6SLR die and go nuts. Not so bad if you lose one. A mate runs a 6x47L as an f class rifle. It seems very accurate and I would love to have one set up for 70gr noslers. Im doing a 6 dasher instead though as I got reamers and headspace gauges at a good price. Wont be that far behind the 6x47L

[Glenn]

If it shoots anything like Missed's it would be a beauty.

It dose, ask him!

Glenn

[jeffk]

Thought about Redback Precission?
Mick

Phil did some bolt fluting for me, and built a mate a stunning 300WM on a Stiller action - workmanship is first class, and customer service pretty good too. Like most of the top smiths, he is busy though, so a fast turnaround shouldn't be expected...