Has anyone played with an improved version of the 6.5 rem mag? I would think with a steeper neck and straighter case wall you could increase capacitiy a bit and also make it a bit more efficient. put it on a long action to stretch the oal and with a case that was not as pressure sensitive as the 6.5-284, you could really make it shine. If I had the resources I would play with this a bit. But I have kids to feed and limited funds.
The 6.5's
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OKIE2
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i have checked it out you only gain 3.4 grains in case capacity
i don't think it would be worth it.
I have a 6.5 rem mag with a 26" barrel it is fine as is.
WildRose
Well-Known Member
If I were going to do anything like that I'd just neck my 7mm STW brass down to 6.5 and see just how fast they can run without losing accuracy.
It would be a guranteed barrel burner though at those pressures and velocities.
With all of the available standardized chamberings in 6.5 already on the market I just can't see spending the resources to try and come up with something new and different just because I can.
I like odd ball stuff that I can't just go buy ammo for. Not sure why, grew up around wildcats so i guess it's just ingrained in me. I also like the thought of getting all I can out of as little powder as possible.
I was sure it wouldn't be a huge increase in capacity, but what about with a long action and a COL of, say 3.3 inches with a 140 grain bullet. What is your COL and what kind of velocities are you getting? I believe (with only my experience to go on, no scientific proof) that the shoulder angle has a lot to do with the efficiency of a cartridge. That is in terms of fps per grain of powder. Is your rifle a long or short action. I work up all of my loads with the base of the bullet no deeper than the base of the case neck in my 6.5s. All I have are 2 6.5-284s and 3 6.5x55s. I am toying with making one of the 6.5x55s an ackley as it has a 27 inch barrel and I could make use of the extra capacity. It is a homemade custom on a turkish large ring small shank 98 mauser action with a turned down model 96 barrel on it. The thing shoots 1/2 inch groups with wolf gold 139 FMJ ammo. I have not done a lot of load development with it but I can tell that they took some of the length off the 29 inch barrel from the rear to recut the chamber to much tighter tolerances. probably an inch off the front and an inch off the rear. Has a nice target crown and the guy was a cabinet maker who built the stock with a Weatherby deluxe as a model. it has a cherry forend, no checkering, again a cabinet maker. but it feels great. Got it at a gun show for 300.00 scope and all, rifling was deep and shiny, all metal parts were sprayed with flat black engine enamel, except the bolt and had a bold trigger with a 700 style safety. Figured I was taking a chance but it looked like it may have potential, the seller knew little about it and the original owner had died, it was to help pay funeral costs. Not sure if it was a steal, but I wasn't taken. Just looking for something to do with it and make it "Mine"
I was sure it wouldn't be a huge increase in capacity, but what about with a long action and a COL of, say 3.3 inches with a 140 grain bullet. What is your COL and what kind of velocities are you getting? I believe (with only my experience to go on, no scientific proof) that the shoulder angle has a lot to do with the efficiency of a cartridge. That is in terms of fps per grain of powder. Is your rifle a long or short action. I work up all of my loads with the base of the bullet no deeper than the base of the case neck in my 6.5s. All I have are 2 6.5-284s and 3 6.5x55s. I am toying with making one of the 6.5x55s an ackley as it has a 27 inch barrel and I could make use of the extra capacity. It is a homemade custom on a turkish large ring small shank 98 mauser action with a turned down model 96 barrel on it. The thing shoots 1/2 inch groups with wolf gold 139 FMJ ammo. I have not done a lot of load development with it but I can tell that they took some of the length off the 29 inch barrel from the rear to recut the chamber to much tighter tolerances. probably an inch off the front and an inch off the rear. Has a nice target crown and the guy was a cabinet maker who built the stock with a Weatherby deluxe as a model. it has a cherry forend, no checkering, again a cabinet maker. but it feels great. Got it at a gun show for 300.00 scope and all, rifling was deep and shiny, all metal parts were sprayed with flat black engine enamel, except the bolt and had a bold trigger with a 700 style safety. Figured I was taking a chance but it looked like it may have potential, the seller knew little about it and the original owner had died, it was to help pay funeral costs. Not sure if it was a steal, but I wasn't taken. Just looking for something to do with it and make it "Mine"
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LRHWAL
Well-Known Member
Just to verify...
I did check. The shoulder angles do differ, the 7x57 angle is maintained in the 257 Rob, but the 6.5x57 is shallower. The 7x57 is the same as the 8x57 though as per my manuals, so I'm not sure where that 6.5x57 shoulder angle originated.
I did check. The shoulder angles do differ, the 7x57 angle is maintained in the 257 Rob, but the 6.5x57 is shallower. The 7x57 is the same as the 8x57 though as per my manuals, so I'm not sure where that 6.5x57 shoulder angle originated.
My 6.5x257 AI is the same shoulder as the A square AI. 40 deg. I think. The cases I make are from 257 Rob, 7x57, 6.5x55 and reformed 270 & 30-06 brass. Once formed they are really stable and don't stretch. The 6.5x55 Lapua
held back against the bolt face forms great, the neck is shorter but doesn't seem to affect the accuracy. I get better than the book specs on the 6.5x284 in performance. Best of all it's a joy to shoot. Weezer
held back against the bolt face forms great, the neck is shorter but doesn't seem to affect the accuracy. I get better than the book specs on the 6.5x284 in performance. Best of all it's a joy to shoot. Weezer
big mike 2121
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diggin the 6.5 rem mag numbers, but where can i get a bolt actionin that caliber? custom? rebarrel something else?
WildRose
Well-Known Member
The first place I'd look would probably be the Remington Custom shop and have them build it on a Sendero platform.... .
If you want to go with a full Custom call Kirby Allen or go look at his 6.5 AM he's got for sale on the classifieds section here if it's still available... It's a sweet rig! gun)
rscott5028
Well-Known Member
If you don't find the 6.5 rem mag you're looking for and don't want to build a custom, you might want to look for a Rem Sendero in 264 Win Mag. It's another way overbore 6.5 with a strong following.
-- richard
big mike 2121
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what about rebarreling something, what caliber or size bolt face could be used. either savage or remington. long action would give u more options on bullet seating correct?
Now you're talking; Hit a pawn or gun shop. Pick up an ok {as long as the action in good shape your golden} 7mm Mag or something with that bolt face, send it into barrel guy, have a new barrel popped on in 6.5 Rem Mag and your in business. As long as the bolt fit the parent cartridge .458 Win or .300 H&H Mag it works, that way you do little or nothing to the magazine.
436
big mike 2121
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yeah yeah yeah yeah 436...see? THATS THE KIND OF ANSWER I NEED!! so it would need to be a bolt face similar in size to a 300 mag? or does it have to be 300 H&H mag?
WildRose
Well-Known Member
Same bolt face. 7mm R Mag, 300 Rum, 300 WM, any of those will do.
He's right. Check pawn shops and gunshows and just find a long action magnum in any of those calibers that's a beat up piece of junk and you can buy them cheaper than you can order a new action.
Personally I'd probably just buy a nice used sendero in the magnum calibers, and send it off to Krieger and have them rebarrel it and square/true the action.
The latter is the poor man's way to get one done at a reasonable price as it will save you several hundred dollars over having a custom gun builder do the exact same work, and a thousand or more over having one built from the ground up.
PS also check the classifieds here and at sniper's hide as you can find a lot of used sendero's in long action magnum calibers for sale at 900.00 or less.
Going the used sendero route also puts you into a very nice stock while you are at it.
Big Mike, I ran 6.5-06 A square Ackley Improved reamer in short and stopped at 57mm length, barreled it in a mauser action will a standard bolt face. You could do it in a Savage long action by ordering a chambered barrel from one the barrel companies (Shaw, Pacnor, McGowen ect.) and put it in yourself pretty easy. Good luck.
