22-250 ackley vs 22-250 remington please help

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I like the sounds of a 50 grain V-max going at 4000 fps, that sounds scary. Maybe I will Ackleyize my Tikka 22-250 with a 1-14".



I'm not a fan of heavy bullets and fast twist. A 50 at 4000fps does a real good job. Actually you should get close to that with 55's and easily more with 50's. I have a few guns chambered for 22-250AI. One 25" Walther barrel was shooting 50BT's at 4110 when fireforming and with excellent accuracy.....I've never chrono'd it with formed cases. A 28" Hart barrel gets 4243 with that same ragged hole accuracy. Another barrel gets 4150. A rechambered Remington 24" sporter was doing 4100. These are accuracy loads, all with 14" twist barrels and 50gr. bullets. That combination will blow the crap out of things and finding a good load is easy. After shooting a bunch of chucks, the rocks will look like like someone went in there with a paintball gun and red pellets.
 
I shoot a Cooper Classic in 22-250AI or At least I did. I didn't like the 14" twist BBL so I had a after market "Mike Rock of Rock Creek BBLs" in stall their 8"5R cut rifled BBL on it. I can shoot 75 gr A-maxs at 3450 with 38.5 grs of H4350. Note great accuracy providing all bullets are nearly jammed into rifling. Other wise target will look like a buck shot pattern and MV all over the place. Shot a Fox at 70 yards with A-max . All it did was blow his guts out even though I hit him just behind the shoulder. Fox was dead before he hit the ground.Also have been shooting JLK VLDs ( Swamp Works) actully they call the bullet I'm shooting a LOW DRAG 65 gr flat base. I'm getting about 3,700 FPS with 1/2MOA. Those bullets have a BC of .395
 
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That combination will blow the crap out of things and finding a good load is easy. After shooting a bunch of chucks, the rocks will look like like someone went in there with a paintball gun and red pellets.



/ubbthreads/images/graemlins/smile.gif Thanks guys, I just might have to rechamber my 1-14" to A.I for now. Does anyone have any idea what kind of freebore would be good for the 50-55 v-max bullets? I think the A.I will feed real nice out of my single stack tikka t-3 magazine.

I might try the heavier bullets later when I can actually afford a new barrel ($500).
 
Im always on a quest for long range victim. I will shoot just about any vermin squirrels, coyotes, rockchucks and even our feathered friends. I live in the Eastern part of Oregon a really windy place.

That's why I was curious about a high B.C A-max bullet. Lots of wind and long range. But I have shot a rockchuck at 635 yards with a standard 22-250 and 50 V-max, But pushing them at over 4000 will give me better accuracy and less wind drift and drop. How can you go wrong?
 
Thanks for the compliments, on the rig, but first, I read my post, and when I started talking about loading 1 grain under max, that was for the standard 22-250 when fireforming. Just wanted to clear that up. As for the scope, it is a vintage 50's 24X Unertl 2" Target Model. I own several of these, and you will find no better glass anywhere. I've shot from dusk to dawn, in the lowest light, and the Unertl smokes my Leupolds, in the light gathering. I always wanted to try a NF, but don't even know anyone who owns one to look through. DAA is a valuable resource here on PM, there are those who think they know, and those who do. DAA knows his stuff, and if you have questions, he'll do a good job giving you the right answer.
 
Flybuster,
Chamber it with the absolute minimum of freebore. You will get a little more barrel life. You will have lots of freebore soon enough.

Jack
 
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Does anyone have any idea what kind of freebore would be good for the 50-55 v-max bullets? I think the A.I will feed real nice out of my single stack tikka t-3 magazine.




Unless heavy bullets will be used, go with NO freebore. With 0 freebore, any of the plastic tipped 55gr bullets just kissing the lands will seat to about the base of the neck. The 50's will be a little higher. That's with a new chamber. As the throat wears you'll be seating further out. I'd recommend having your own reamer and you can spec it any way you want. Mine is sized to brass length so there's less distance from casemouth to the end of the chamber.
 
Oh know my rifle isn't shooting the A-maxs worth a crap. I don't have but 300 rounds down it. Been shooting hot hot loads behind some 65gr LD bullets . Some of them made it to the target and some didn't. So that load isn't any good. I'm awaiting some 65gr Sierra Game kings. I've been told Nosler BT work well also.
 
My BBL was made by Rock Creek Barrels. Mike Rock the owner said they're very high up on the Rockwell hardness scale.How High?I'm clueless ? Its a cut rifled 5R 8" twist. 300 rounds? Can't be. I have a 6x284 that I shoot full throttle loads thru and I'm approaching the 1,000 mark its still giving me 1/2MOA and better. /ubbthreads/images/graemlins/frown.gif
 
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My BBL was made by Rock Creek Barrels. Mike Rock the owner said they're very high up on the Rockwell hardness scale.How High?I'm clueless ? Its a cut rifled 5R 8" twist. 300 rounds? Can't be. I have a 6x284 that I shoot full throttle loads thru and I'm approaching the 1,000 mark its still giving me 1/2MOA and better. /ubbthreads/images/graemlins/frown.gif



Well... I'm not sure how much harder the Rock barrel is than any other typical custom barrel, but I doubt it is really much different. And I'm also not sure how much that hardness really even matters, when it comes to throat erosion, but I again kind of doubt that there is enough of a difference to matter much.

And... I hate to tell you this, but yes that barrel most definitely could be starting to be toast after 300 hot rounds. My 8 twist .22-250AI was totally shredding 75 Amax after 300 rounds. Couldn't use them anymore. So I started shooting 80 gr. Bergers, and they did okay for a couple hundred more rounds, then they starte going poof too. So I switched to 80 gr. Sierra's and they got me a couple hundred more before the barrel was absolute tomatoe stake toasted after about 700 rounds total. Mind you, accuracy was still really good, for the bullets that made it to the target, but trying to get 10 bullets in a row to reach the target was pretty much impossible without stopping to clean and cool every five shots or so. Now, I know that how a barrel actually gets used, what the owner is willing to put up with etc. can make a HUGE difference in how long one of these large capacity fast twist .224's will last. If you only ever shoot but two or three shots at a time, always from a cold clean barrel, then it will last a helluva lot longer than one that needs to shoot 10 or 20 shots without stopping to clean or cool. But, I know that for how I used mine, having the barrel be ready for the tomatoe stake bin after 700 rounds is not unusual at all. It's to be expected, in fact. Everyone I know that has built a big capacity fast twist .224 and used it like I used mine, has had the barrel be finished after less than 1,000 rounds.

But of course, there really can be some huge differences in how long they last, if you use them a lot differently than how I used mine. It sounds like you've been using yours kind of like I used mine though /ubbthreads/images/graemlins/laugh.gif.

- DAA
 
Its winter my barrel was cool to the touch I'd let a minute between shot maybe fire 6 07 shots in 15 minutes on a cool winter day. I'm awaiting some 65gr Sierra Game kings. I was going to load some 69 gr Match kings but book says their not meant for over 3,000. I don't think I like those 75 gr A-maxs too much. Shot them thru my RRAs 9" twist AR-15 and man were talking a 6" group at 100. When it produces 1/2MOA with Sierra 52gr Match.Who made your BBL? What do you have now? Maybe my next BBL should be a 9 or 10" twist ?
 
Hey I'm safe. Just walked in the door from rifle range. I was using Sierra 5th editions data for the 69gr MK. Loaded 44grs of H4831 out of my rifle that gave me an average 3,500 FPS out of 10 rounds plus a nice 1/2MOA with only one fly-er out of 10 shots.Book said that load would only give me 3400 FPS plus I seated bullets into lands. Ok 2nd loads were 38 grs of H4350 MV was 3375( Book said 3,200)average for 10 rounds but target looked like a close range buck shot pattern???? I had two rounds left of H4831 combo. Thinking my BBL might be a copper mine I fired last two rounds into a 3/8s two shot group.So for sure my fear of a burnt BBL isn't a reality yet ??????. I think A-Maxs bullets suck ! /ubbthreads/images/graemlins/ooo.gif /ubbthreads/images/graemlins/grinning-smiley-003.gif /ubbthreads/images/graemlins/grin.gif /ubbthreads/images/graemlins/smile.gif /ubbthreads/images/graemlins/cool.gif /ubbthreads/images/graemlins/laugh.gif
 
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Ok so what can I do other then not shoot it to get the most out of the Barrel? Any coatings? What about ball powders are they easier on barrels?
 
Iorn, H4350 is a really hot burning powder.

I shot the 65'g Berger with a load of 37.0g of Win 760 at 3700 fps out of a hart 27" 12 twist, absolute max load for that barrel with very minimal freebore (.025) in my first 22/250 AI.

I got about 2000 HARD rounds out of that barrel before it was toast.

I also shot the 50's at 4250 and the 55's at 4150, unreal accuracy with 760. I had to use a 10" drop tube to get all the powder in the case, single digit SD's.

When VLD's can not be started near or into the lands, often they get started crooked and accuracy goes to pot. When this happens, a bullet with more bearing surface is called for. When throats get rough, jacket gets messed up, creating an unbalanced bullet.

There is an issue of the amount of Heat/Duration of time the heat stays in the area in front of the throat(burning chamber). Fast twists really keep the heat in a fixed area longer.

I had a 8" twist in 6 PPC, and it was really hard to accept how fast the leade grew in this barrel compared to a 14 twist from the same barrel maker.
 
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Ok so what can I do other then not shoot it to get the most out of the Barrel? Any coatings? What about ball powders are they easier on barrels?


I have burnt out probably 50+ barrels. Once you choose a certain case size there is little you can do to make a barrel last longer. True, barrel life is very subjective, some people will put up with a lot more than others.
You chose a barrel burner and hopefully it has served well. Just fit a new barrel and enjoy it some more.

Jack
 
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