Jim Watson
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If he ran a .257 reamer into a 6.5mm barrel blank, the chamber neck will be way undersize for 6.5x57 and will need to be enlarged to handle proper ammo.
.257 Roberts
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jimmyraythomason
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Agreed,I did a diminsions comparison between the .257 Roberts and the 6.5x57 and saw that. I'm wondering about 6.5x257 Roberts(like for the Arisaka).
PRD1
Member
Well...
I'm glad we solved the mystery.
The 6.5x57mm is an excellent cartridge, and you could easily modify the existing chamber by having a competent gunsmith run a necking reamer into the chamber, followed by a throater to suit the bullet you want to use at the OAL you decide on. I make the distinction about the 'smith because that was a pretty egregious booboo the first guy made in not noticing what caliber the barrel actually is.
Having said that, I would not personally recommend using a barrel with groove diameter as much as .002" over the standard for 6.5mm, as I have not found such barrels to produce the best accuracy, or to resist erosion and gas cutting as well as a barrel of standard interior dimensions.
Were the rifle mine, and what I wanted was a Roberts, I'd have the rifle rebarreled - probably by another gunsmith.
PRD1- mhb - Mike
I'm glad we solved the mystery.
The 6.5x57mm is an excellent cartridge, and you could easily modify the existing chamber by having a competent gunsmith run a necking reamer into the chamber, followed by a throater to suit the bullet you want to use at the OAL you decide on. I make the distinction about the 'smith because that was a pretty egregious booboo the first guy made in not noticing what caliber the barrel actually is.
Having said that, I would not personally recommend using a barrel with groove diameter as much as .002" over the standard for 6.5mm, as I have not found such barrels to produce the best accuracy, or to resist erosion and gas cutting as well as a barrel of standard interior dimensions.
Were the rifle mine, and what I wanted was a Roberts, I'd have the rifle rebarreled - probably by another gunsmith.
PRD1- mhb - Mike
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jimmyraythomason
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Okay,time for an update. I finally got around to sending it back to my 'smith. He verified that it was a 6.5 bore. He is setting the barrel back and chambering it for 6.5x55 Swede cartridge. I'll give a range report when I get the opportunity.
morcey2
Member
Totally useless cartridge. It won't even take down a rabbit, let alone a deer or anything else. What else can you expect from a bunch of pasty Scandinavians? 
Ok. So I'm building one too. I've always wanted a swede. And I epitomize the pasty Scandinavian. Let us know how it shoots.
Matt
Ok. So I'm building one too.
I've always wanted a swede. And I epitomize the pasty Scandinavian. Let us know how it shoots. Matt
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jimmyraythomason
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I almost opted for the 6.5x57mm Mauser but went with the Swede because of ammo availability. I think I would have been happy with either. I am still going to build a .257 Roberts on a Turk K.Kale receiver in the future. Probably with a new short chambered barrel from Brownell's.
mljdeckard
Member
I have many (a couple of hundred) cases sized and primed, I have not loaded them. I have my dad's old Remington 760, I plan on full-length sizing and normal pressure.
(Mine is a Bob, not a Swede.)
(Mine is a Bob, not a Swede.)
morcey2
Member
So, would a 6.5-257 be called a Swoberts? (slightly different than 6.5x57, but not by much, at least according to my recollection)
I was in a LGS last week talking about my 257 that I'm building (glass bedding done and first application of BLO done) and one of the customers told me that it was a completely useless cartridge in Utah and I was wasting my time building one. I should be building at least a 300 Win Mag, since that's what you need to kill the apparently armor-plated muleys that we have here. The guy behind the counter pointed at the perfectly symmetrical 4-point (western scoring) mule deer head on the wall and said that he shot that one with a 257 loaded with partitions at between 250 and 300 yards. The customer more or less called him a liar and was asked to leave.
I've become a big fan of the more mid-range cartridges. My 30-06 is about as powerful as I get since I value my retinas and shoulders. The 6.5mm and 7mm midrange cartridges are great. 260 rem, 6.5x55, 6.5x57, 6.5 CM, 7-08, 7x57, and a few others I'm probably forgetting. Good BC and SD, lots of bullet choices, and manageable recoil.
Matt
(slightly different than 6.5x57, but not by much, at least according to my recollection)I was in a LGS last week talking about my 257 that I'm building (glass bedding done and first application of BLO done) and one of the customers told me that it was a completely useless cartridge in Utah and I was wasting my time building one. I should be building at least a 300 Win Mag, since that's what you need to kill the apparently armor-plated muleys that we have here. The guy behind the counter pointed at the perfectly symmetrical 4-point (western scoring) mule deer head on the wall and said that he shot that one with a 257 loaded with partitions at between 250 and 300 yards. The customer more or less called him a liar and was asked to leave.
I've become a big fan of the more mid-range cartridges. My 30-06 is about as powerful as I get since I value my retinas and shoulders. The 6.5mm and 7mm midrange cartridges are great. 260 rem, 6.5x55, 6.5x57, 6.5 CM, 7-08, 7x57, and a few others I'm probably forgetting. Good BC and SD, lots of bullet choices, and manageable recoil.
Matt
mljdeckard
Member
My dad said his whole life that the Bob made him look like a really good shot. One of the last deer he killed was on a private piece in Monticello, 200 yards one shot. He put peep-through rings on it, because he missed more than one shot in the brush.
If someone told me a .257 wasn't good enough for deer, I would flat tell them they need to shoot better. And yeah. I've met that guy at the LGS too. (I'm starting my sister on a .243.) With better rifles, optics, and ammo than our grandfathers grew up with, it's less true than ever.
If someone told me a .257 wasn't good enough for deer, I would flat tell them they need to shoot better. And yeah. I've met that guy at the LGS too. (I'm starting my sister on a .243.) With better rifles, optics, and ammo than our grandfathers grew up with, it's less true than ever.
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jimmyraythomason
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More like an Arisoberts since it was loaded for the Type 38 Arisaka(before 6.5x50mm Jap ammo was available).
"my Bob is a short action Browning, and that's just fine for me since I load it light to moderate so I can just enjoy getting hits and not get beaten up by recoil. I know, the Bob doesn't recoil hard anyway, but loaded light it's just about the ideal centerfire teaching rifle. I can load long cartridges, just can't feed them from the rather cramped magazine. But I sure do love A-Bolts"
Have the Browning 257 Roberts featherweight, and hogged out the spacer in front of mag to allow longer COL, and closer to the lands loading.
Have the Browning 257 Roberts featherweight, and hogged out the spacer in front of mag to allow longer COL, and closer to the lands loading.
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jimmyraythomason
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6.5x55 Range report
Range report <http://www.thehighroad.org/showthread.php?p=9150778#post9150778>
Range report <http://www.thehighroad.org/showthread.php?p=9150778#post9150778>
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jimmyraythomason
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I guess if I still want a .257 Roberts there is always my K.Kale Turk receiver......
morcey2
Member
That sounds too much like a skin disease.
It doesn't roll of the tongue like Swoberts does. The K.Kale would make a fine Bob rifle.
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