I just plugged some numbers into quickload and I was impressed at the numbers with ram shot hunter. Has anybody tried this out at 1000? I don't have the data infringing of me but I think with a 10mph crosswind at 1200 yards bullet drop was 32 MoA and wind/spin drift was 86".
22-250 and Berger 90gr vld's
- Thread starter rl4930
- Start date
Oh ya it's been done.
Expect 500-600 rounds max per barrel though.
Nobody does it for long though, once they realize they would do better to neck up to 6mm and run 115s. Then you are into 6XC/6x47 Lapua territory and 800 round per barrel life expectancy. This makes for a nice calm day rifle, but once the wind kicks up, you'll feel under gunned next to a 6.5 or 7mm.
Expect 500-600 rounds max per barrel though.
Nobody does it for long though, once they realize they would do better to neck up to 6mm and run 115s. Then you are into 6XC/6x47 Lapua territory and 800 round per barrel life expectancy. This makes for a nice calm day rifle, but once the wind kicks up, you'll feel under gunned next to a 6.5 or 7mm.
I figured that might be the case, I thought maybe the heavy bullet and slower velocity might increase barrel life. I guess I'll stick with the 223 ackley and build a 6.5 or 7mm of some sort. I'd like something that lasts 1500 to 2000 rounds if possible.
victor1979
Member
- Location
- Grande Prairie
I shoot an 8 twist Kreiger 22-250 and it shot over 1200 rounds before it needed to be rechambered.It was shooting really well at that point still but was falling off a little bit. I use N-550 and 77 grain Berger OTM tactical bullets in it. I doubt that with 90 grain bullets you would cut your barrel life in half. Im with badasmo on the 6XC but I don't agree with his barrel life comments.
redshooter
CGN Ultra frequent flyer
- Location
- Central Ontario
90's are hard to get to shoot well. That was my experience and much of what I've read agrees. No problems with 80 gr SMK's and 75 A-Max, but it appears I just don't have the gear/skill/patients to load 90's.
Mo, love the avatar! Is that a real barrel or just Photo shopped?
Mo, love the avatar! Is that a real barrel or just Photo shopped?
Yes I may be off on the round count, but I doubt by much. To shoot 90 grainers from a 22-250, you're going to be running some slow burning powder. Slow burn rate = shorter barrel life. Also, so does a hot load. If you want to load this round with your " Light Sunday go to meetin loads", then you can extend barrel life, but then what's the point of this round in the first place.
Not to start an argument here... but if I smoked my 6x47 barrel in 800 rounds flat, it's a pretty safe bet 90's from a 22-250 will not hit 800 in a smaller 223 bore running the same amount (in grains) of even slower burning powder.
Mystic Precision
CGN Ultra frequent flyer
- Location
- Summerland, BC
Note, some combos of slow burning powder actually extend bore life. There are several 6mm wildcats built around this concept and their results seem to show promise.
The 22-250/90gr is NOT a fussy set up. Mostly because you have tons of case volume to motivate the bullet to its prefered operating speed. I have built a few and they are lots of fun.
Long bore life? Of course not. But neither is the orig 22-250 shooting 55gr bullets... at least that depends on what your accuracy goals are.
If you want the ballistics of a 300WM with zero recoil, this works very nicely. AND bore life is similar so....
I am currently playing with the 6XC and having alot of fun. Accurate and easy to tune. Will it wear before a 6BR? more then likely but going up to 200fps faster has its advantages.
Bore life discussions are a murky debate at best. What is accuracy to each shooter? How will the barrel be shot? How hot will it get? and so forth.
I go by a simple rule of thumb as it seems to play well across all cals. Push a heavy for cal, high BC/low drag bullet around 3000fps, and you are likely to see 1/2 min accuracy into the mid teens (1500rds). Keep it cool or slow rate of fire, maybe get into the high teens/low 2's.
Run this combo fast and very hot, 800 to 1200rds is about it.
Take this combo and drop 100fps, bore life goes up about 20%. Drop another 100fps and it goes up about 50%. Drop another 100fps and you will easily double lifespan - there are very good reasons why most military cartridges of the past ran their bullets around 2600/2700fps.
It takes a whole lot of energy for each 100fps you want to go faster and that greatly reduces bore life. Playing around with powders and barrel lengths can muck with the results so again, depends on what you are discussing.
YMMV
Jerry
The 22-250/90gr is NOT a fussy set up. Mostly because you have tons of case volume to motivate the bullet to its prefered operating speed. I have built a few and they are lots of fun.
Long bore life? Of course not. But neither is the orig 22-250 shooting 55gr bullets... at least that depends on what your accuracy goals are.
If you want the ballistics of a 300WM with zero recoil, this works very nicely. AND bore life is similar so....
I am currently playing with the 6XC and having alot of fun. Accurate and easy to tune. Will it wear before a 6BR? more then likely but going up to 200fps faster has its advantages.
Bore life discussions are a murky debate at best. What is accuracy to each shooter? How will the barrel be shot? How hot will it get? and so forth.
I go by a simple rule of thumb as it seems to play well across all cals. Push a heavy for cal, high BC/low drag bullet around 3000fps, and you are likely to see 1/2 min accuracy into the mid teens (1500rds). Keep it cool or slow rate of fire, maybe get into the high teens/low 2's.
Run this combo fast and very hot, 800 to 1200rds is about it.
Take this combo and drop 100fps, bore life goes up about 20%. Drop another 100fps and it goes up about 50%. Drop another 100fps and you will easily double lifespan - there are very good reasons why most military cartridges of the past ran their bullets around 2600/2700fps.
It takes a whole lot of energy for each 100fps you want to go faster and that greatly reduces bore life. Playing around with powders and barrel lengths can muck with the results so again, depends on what you are discussing.
YMMV
Jerry
With a COAL of 2.750 and berger 90VLD's behind 36.5 gr of Ramshot Hunter is showing a MV of 3162 fps at a pressure of 57800psi, at 37.8 grs 99.9% (fill capacity) of powder its at 64900psi and 3261 fps. *Theoretically!*
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7 twist 22- 250 90 grn vld bergers Mc Gowan barrel on a trued 700 1/2 minute accuracy when first assembled 800 rounds = approx .070 throat erosion and 1 minute gun. When I set the barrel back I'll throat it for 80 grn bullets and when it won't through them well I should be able to run the 90s for a while. Fun gun to shoot with the 6x24 S3 sightron and drop chart. Mostly shoot 308 on the range now much improved barrel life.
I'd say you should avoid the 6.5x47 altogether and instead go with the 6XC. It's better all around out to about 600 yards and no BS low temperature sensitivity and hang fires from small primers. The 6XC is easy to develop a load for and known for low SDs. From what I've seen, guys new to the 6.5x47 brag it up (at first) and then before long, they drop it and go into something else. There's a reason for that. Small primers and not enough umph. Nobody seems to stay with it for long - unless they cant afford a new build.
Now if you like the idea of the 6.5x47, I would suggest that you open up the 6XC to a 6.5mm. Expanding the neck is easy, you get a bit more powder capacity and a large rifle primer. I'm sure that side by side, the 6.5XC would easily smoke the 6.5x47 day in a day out. Plus you will get higher MV and real good barrel life with low velocity spread. This would be a no brainer.
If you want to reach out to the 1K mark, the straight 284 has done real well in F-Class. Always a contender for long range. Nobody could fault you for going with the 284. Again, no BS load development.
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- Location
- big sky country
I have wanted to try this combo far a while now.
In terms of powder capacity, the 260 will run just a bit faster than the 6.5XC. It has a slightly greater powder capacity, maybe a grain or two.
What I like better about the 6.5XC is the shoulder angle. Wildcatters have found better accuracy/lower ES with the 30 degree shoulder than the 20 as per the 260. Also the 30 degree shoulder Helps prevent the forward flow of brass when the round is fired. This means that you will need to trim the case OAL less frequently/less aggressively.
You will find that the velocity spreads will be better with the 6.5XC. You want to hold that water line for long range.
So the advantage of one over the other may be only slight. But you will like the xc better in the long run... if you can get the brass.
The 6.5x55 is faster than the two above. It's a round that was ahead of it's time. It's kind of a design split between the 260 and XC with a longer case. I've heard stories of great things with this round but have never been witness to it. Certainly not a bad choice. With this round, you might consider tweaking the shoulder to 30 degrees and maybe straighten out the side wall a bit. That would get the round up to a more current design. With these changes it would no doubt be the best of all mentioned here.
What I like better about the 6.5XC is the shoulder angle. Wildcatters have found better accuracy/lower ES with the 30 degree shoulder than the 20 as per the 260. Also the 30 degree shoulder Helps prevent the forward flow of brass when the round is fired. This means that you will need to trim the case OAL less frequently/less aggressively.
You will find that the velocity spreads will be better with the 6.5XC. You want to hold that water line for long range.
So the advantage of one over the other may be only slight. But you will like the xc better in the long run... if you can get the brass.
The 6.5x55 is faster than the two above. It's a round that was ahead of it's time. It's kind of a design split between the 260 and XC with a longer case. I've heard stories of great things with this round but have never been witness to it. Certainly not a bad choice. With this round, you might consider tweaking the shoulder to 30 degrees and maybe straighten out the side wall a bit. That would get the round up to a more current design. With these changes it would no doubt be the best of all mentioned here.
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Mystic Precision
CGN Ultra frequent flyer
- Location
- Summerland, BC
Also add in the 6.5 Creedmoor and the 260 Improved/6.5 Mystic.
From the 6.5X47L to the 6.5X06, you are increasing case capacity... More fuel, more potential speed.
The key is finding a case volume that meets your objectives of bullet, barrel length, powder, speed and operating pressures. NO 1 right answer... just many super fun and very accurate options.
Jerry
From the 6.5X47L to the 6.5X06, you are increasing case capacity... More fuel, more potential speed.
The key is finding a case volume that meets your objectives of bullet, barrel length, powder, speed and operating pressures. NO 1 right answer... just many super fun and very accurate options.
Jerry
dodgeman308
Regular
- Location
- Smiths falls, Ontario
I just put together a 22-250 LRPV with a shilen barrel, I'm using 80 grain bergers and imr 4350, loving this set up so far, I will probably not shoot more than 100 rounds a year out of it realistically so for me I'm not to worried about barrel life, so I guess it all depends on what you're looking for
