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Practical Dope on the Big Bores by Fred C. Ness has a paragraph comparing the 257 Ackley Roberts to the very similar 257 Weatherby Roberts.
Anyone got one or heard of it? Weatherby shoulders on it?
Bruce
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never heard of it...
257 Roberts...yep.
257 Roberts AI...yep.
257 Weatherby...yep
257 Weatherby Roberts...nope.
However, I admit I don't know it all...
The land of the free because of the brave.
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No memory of it here either, must have been a typo in the book.
LOVE God, LOVE your family, LOVE your country, LIKE guns and sports.
About 2016 team "R" candidates "We definitely need a crew with a sack of balls the size of hot water bottles, bloviated estrogen leaking feel-gooders need not apply." Gunner 500
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Page 130-131 (Book published in 1948)
The Improved .257 Roberts
These are altered factory cases, those by Ackley and Weatherby being practically the same. Velocities up to 4000 f.s. have been reported by enthusiastic handloaders of these two wildcats. Both offer the advantage to their users of accepting standard factory ammunition and forming the cases of factory loads fired in their converted chambers.
(deleted some load data)
Other .25 caliber wildcats give fine ballistics but do not permit the interchangeable use of factory loads.
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I would interpret that to mean that both Ackley and Weatherby cartridges were/are made from some other parent cartridge- nothing more.
I'd rather be a free man in my grave, than living as a puppet or a slave....
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I suspect it is something Weatherby experimented with and perhaps wrote about before he started in business.
Bruce
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Page 130-131 (Book published in 1948)
The Improved .257 Roberts
These are altered factory cases, those by Ackley and Weatherby being practically the same. Velocities up to 4000 f.s. have been reported by enthusiastic handloaders of these two wildcats. Both offer the advantage to their users of accepting standard factory ammunition and forming the cases of factory loads fired in their converted chambers.
(deleted some load data)
Other .25 caliber wildcats give fine ballistics but do not permit the interchangeable use of factory loads. That's pretty confusing. Doesn't make sense to me. I have both .257AI and .257Wby and they're not comparable......the Wby is a whole big bunch more.
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These are altered factory cases, those by Ackley and Weatherby being practically the same And the 257 Weatherby is not formed by firing a factory load, as this 257 Roberts Weatherby Improved seems to be. Bruce
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Campfire Outfitter
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they are discussing the 257 roberts and the fact that both roy and PO ran the roberts up the pole... has nothing to do with the 257 weatherby...
woofer
"I would build one again, if it were not for my 350RM (grin)."
MtnHtr
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4,000 fps sounds too fast even for a Weatherby.
He who joyfully marches in rank and file has already earned my contempt. He has been given a large brain by mistake, since for him the spinal cord would suffice.
- Albert Einstein
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i thought the same thing but the post was not about it.. seems to me back then the 75 grainer was about it in 25... i think...
that sounds like roy stuff to me..
woofer
"I would build one again, if it were not for my 350RM (grin)."
MtnHtr
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4,000 fps sounds too fast even for a Weatherby. Piece of cake with bullets of 87grs or lighter, especially if Moly is used. With 70 grainers, 4000 is basically a LIGHT load. I am surmising from the writen works that 'Ol Roy must have had his version of the 257 Roberts improved out there at one time. Parker O. Ackley was far from the only guy out there doing that, even though his versions made more inroads and beacame more main stream, at least as main stream as an improved or wildcat can ever get to be.
LOVE God, LOVE your family, LOVE your country, LIKE guns and sports.
About 2016 team "R" candidates "We definitely need a crew with a sack of balls the size of hot water bottles, bloviated estrogen leaking feel-gooders need not apply." Gunner 500
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4k from the roberts?
woofer
"I would build one again, if it were not for my 350RM (grin)."
MtnHtr
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4k from the roberts?
woofer Maybe 60 grain bullets? Data for standard Roberts from Hodgdon: 60 GR. HDY SP...Hodgdon...H335...48.0...3885...46,400 CUP Nearly 3900 at low pressure. The load date I deleted from the quote was for 100-125 gr. bullets. Bruce
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4,000 fps sounds too fast even for a Weatherby. It isn't.....a 257Wby with 29" (12 twist) barrel will shoot 100's at 4000. The .257AI does 3775-3800 with 85's (28" barrel) and I haven't shot anything lighter, but 75's should be doing a good bit more.
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Glad I'm not the only fellow with a copy of that old book!
Like others, I suspect that perhaps Weatherby experimented with the .257 Roberts, before he came up with the .257 Weatherby.
My grandfather had a '98 Mauser, barreled in .257 Roberts, and wanted more back in the late 1940's/early 1950's. He sent it off to Weatherby and it came back as a very early .257 Weatherby, well before factory rifles & ammo were available. I remember helping him seat bullets for that thing when I was a little kid. I thought that case was something like a rocket!
My son now shoots that rifle, the fourth generation of our family to do so. Heck of a cartridge, heck of a rifle.
Regards, Guy
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