6mm-250 ??

[nockhunter]

I am planning on building a varm/pred rifle. I already decided on the basic Savage m10 platform, from my question I asked earlier. I was just wondering about the 6mm-250 chambering, I don't see a lot of people using this wildcat much. I was planning to go with the 6mm BR and a heavy sporter barrel for a rifle that I can actually carry in the field. I ran across the 6-250 while looking up loads for the 6mmBR and liked the better velocity, but less than 243Win. I think the 22-250 case is just the right size. I also noticed the Lapua BR brass is very expensive, the dies are about the same. I would like to know how accurate the 6-250 can be. I hear a lot of people talk about how accurate their 22-250's are with Win brass, I was thinking how bad can it be to bump it up to 6mm. I understand how accurate the 6 BR is, but I am mainly looking for a very good mobile rifle to pop woodchucks or coyotes. Is somewhere in the .5-.75" at 100 yards too much to expect. The price of the brass is a factor because you lose some while in the field, that Lapua stuff is way more than the Win stuff.
Any info would be great, I did use the search function but didn't come up with much.

Thanks
Mike

 

[fdshuster]

Mike: I had a 6mm22-250 chambering done about 10 years ago with a Shilen 1-10 twist, Remington varmint contour. There was a writeup on the chambering in "Precision Shooting" & I decided to give it a try. In my experience, it was nothing special. I always thought of it as a 22-250 that would shoot heavier bullets. I loaded with the same care & precision as I did with the 6ppc, but was limited to Winchester brass at that time. As good as the Winchester is, it's still not the Lapua that is available today. Accuracy was nothing special, and at times when comparing the straight 22-250, (Hart 1-14 barrel) with the 6mm22-250, the 22-250 produced smaller groups with the 50 to 53 gr. bullets, compared to the 6mm with the heavier weights, up to 69 gr. maximum. Shot the barrel out at approx. 2000 rds., re-barreled to one of my first 6BR chamberings & never looked back. You are right about the 22-250 case. Powder capacity is available to use with a heavier weight bullet & thinking back on it now, if I had it to do all over again I'd probably go with an 8 twist for bullets up to 80 gr. wt. But now, we're approaching the level of the 243 Win.

 

[wc872]

In the early 90's I had a 6-250 Imp. In the many years that I shoot it, I cannot think of a bad thing to say about it. Life/divorce got in the way of my shooting for several years. When things got around to me being able to shoot again I again shoot that rifle. Another shooter talked me out of it so I set about building another rifle. I looked into the 6xc. I have won 200 yard Bench Rest matches with it & have shot my smallest 1,000 groups with it. The 6xc is very easy to load for. I use a 7.5 twist on all my barrels. With a 7.5 twist I can shoot 70gr - 115gr Dtac bullets with excellent accuracy. This winter I am going to try some 55gr Ballistic tips. I have every confidence that I will be pleased with the outcome. Wolf Lg rifle primers & H4350 are the only components other than projectiles that you will need. I am sure that other cartridges will work but when you have such excellent results for so long with the 6xc you feel like you should pass it on.
Semper Fi

 

[fivering]

The 6mmx250 is an excellent choice. These days everyone seems to want to have the latest and greatest, usually at little improvement in performance and a great increase in cost, while great older cartridges go ignored.
Among the advantages are ease of making brass, just pass an expander down the neck and you are ready to load, no fire forming required. If you take the time to uniform and sort your brass by weight, the Winchester brass performs extremely well, at a fraction of the cost of the Lapua. The cartridge is very accurate, be sure to spend a little extra on a top quality barrel. One of the shooters in our area regularly wins our 600 yd matches with the 6mmx250.
H-4350 and Re-17 are your best choices for powder, along with the Wolf LRM primer, and any good 105-107 gr target bullet.

 

[mattri]

Is there any advantage of goiung witht he 6-250 over a 6cx?

 

[wc872]

If you are just starting out I don't think that there is any difference either way. If you already have dies or have a line on either set of dies then go for it. Lot's of folks shoot the 6xc with brass made from 22-250. Both cartridge are so close together in performance you would have to base your choice on cost. I used to sort the Norma 6xc brass by weight, however it is so close that I don't weight sort any more. I lost a couple of pieces of brass which was on it's 9th firing. I don't sort brass by the number of times it has been fired anymore either. There are some pieces which have a "click" at the very top of the bolt throw. I pitch the pieces of brass that "click". They can be sized down to chamber effortlessly but once they start to "click" they seem to "click" after every firing so I pitch them. Whichever cartridge you choose I'm sure you'll be happy with it.
Semper Fi

 

[AckleymanII]

I shot the barrel out on two 6/250's

Mine were both 1-12 twists, 26".

I shot bullets in the 60g weight with 38g of H335 with a velocity of 3800 fps+
65g bullets at 3700 fps
70g bullets at 3550-3600 fps

All of these loads were grouping in the High two's to low 3's, and on p. dog towns, I simply mowed them down like I was driving a bush hog.

I used PMC 22/250 brass, Federal 210 primers, and H335 only.

Barrel life with H335 is fantastic and will just about double the barrel life compared to using stick powder. My barrel life was in the 4000 rounds for each barrel (Hart barrels).

I had my own reamer ground with zero freebore, which added to the barrel life I am sure.

Good luck!

 

[nockhunter]

Great replies guys. I know the 6xc and 6x47 lapua have more accuracy potential, but I am just looking for a simple and not too expensive 6mm to shoot woodchucks and coyotes. I could go with the 243W but I was looking for something in between that and 6x45 type of cartridge. Besides with the plain 6-250 feeding from a magazine is not an issue. I was planning on using 65-75,85g bullets. I am not worried about 1000y matches, but a shot at 6-700y might be fun. With the right load I could pop the occasional deer also. What kind of velocity can I expect with these bullets? What twist should I be running? With maybe a deer load, say 90-100g bullets.

Thanks
Mike

 

[WyleWD]

I have a 6xc bench rifle that I liked so well that I had a 6xc built on a Rem 700BDL Short action with a 1-10 twist contour 5 Lilja barrel to do just as you are wanting to do, shooting groundhogs & coyotes. It feeds well, it is more quiet than my 243 and maybe even my 220 Swift. I use 75gr Vmax, 70gr NBT, and 85gr Sierra HPBT bullets over R-17 powder. This may be the most accruate hunting rifle I've ever had and certainly a joy to shoot.

The 70gr NBT & 75gr Vmax I use on coyotes. If I was to take this thing deer hunting.... the 85gr Seirra HPBT bullets is what I'd use. WD

 

[1000yardstare]

Built a 6/250 in the 1980s for 300 metre ISU, sling, aperture sights. Used a Rem 722 action, Fajen prone stock, Anschutz fittings, Central sights.

Barrel was a McGowen stainless 10 twist. The Sierra 90 gr FMJ and AA2520 was an accurate load. The Sierra bullet is actually a pelt bullet but was accurate in my rifle. Put a scope on and the 80 gr Sierra hpbt was dynamite on chucks.

Ordered custom dies from RCBS which I still have. Necked down Win .250 brass to avoid the donut but .250 brass is getting hard to find.

The rifle has been rebarreled to 6AI, then 6.5AI and now 6.5/270 AI, all for 1000 yd F Class.

I have always thought about building another 6/250, maybe in the Ackley version. All a matter of time and money.

Bill

 

[nockhunter]

Thanks again guys.
I was thinking of 1-9, or 1-10 twist barrel. I think the 70-75g bullets are ideal for this cartridge. I hear nothing but praise about the Hornady 75g V-Max. People absolutely love them. I like the Speer TNT's in my .222rem, and thought they might be a good fit for a 6-250. The 6XC feeds from a magazine without problems? I will have to keep this in mind. I've read that the 6mmBr does not and the 22-250AI, 6mm-250AI do not feed that well from a magazine without a lot of tinkering. I thought this rifle would be a good start for my first self built custom rifle. I don't want it to get out of hand. If you know what I mean.

Thanks for the great info

Mike

 

[357Mag]

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357Mag