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Joined: Jul 2001
Posts: 60,098
Campfire Kahuna
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Campfire Kahuna
Joined: Jul 2001
Posts: 60,098 |
Yeah, I had one of those for a while. It shot very well with 100-grain Speer Hot-Cors (as do a lot of 1:14 Savage 99s), which is the bullet I used in the rifle. It worked fine on deer, of course, but WTF?
“Montana seems to me to be what a small boy would think Texas is like from hearing Texans.”
John Steinbeck
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Joined: Apr 2003
Posts: 6,825
Campfire Tracker
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Campfire Tracker
Joined: Apr 2003
Posts: 6,825 |
I wonder? Just what twist rate did Winchester use in those mid 80's.257 Robt. XTR Featherweights? I haven't been able to the 120 gr. Speer to shoot worth spit in mine.
Paul B. Paul: FWIW my 1980s XTR FWT 257 shoots great with 120 Speer Deep Curls, which are longer than the 120 Hot Cores,,,
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Joined: May 2005
Posts: 10,445
Campfire Outfitter
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Campfire Outfitter
Joined: May 2005
Posts: 10,445 |
I beat him by 12...December of '51. What day John? Mine was on the 20th. powdr Gotcha by a month. Nov. 24, '51. Looking forward to JB's article. He's a pretty sharp kid.
"Civilized men are more discourteous than savages because they know they can be impolite without having their skulls split, as a general thing."
Robert E. Howard
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Joined: Oct 2010
Posts: 1,364
Campfire Regular
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OP
Campfire Regular
Joined: Oct 2010
Posts: 1,364 |
Wish I could claim youth & vigour, but alas playing the cards dealt me. I’m December of ‘55
I was taught to respect my elders. Old age & Treachery and all that.
Most Especially, If they can make sense of all this twist nonsense, and present it in a manner that my youthful mind can oversimplify. Which you have done, at least for me.
Cheers
History May Not Repeat, But it Rhymes.
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Joined: May 2011
Posts: 15,886
Campfire Ranger
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Campfire Ranger
Joined: May 2011
Posts: 15,886 |
December 52? I beat you by 7 months :-) Say hello to the campfire dinosaur!
There are 2 rules to success:
1. Never tell everything that you know.
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Joined: Aug 2013
Posts: 580
Campfire Regular
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Campfire Regular
Joined: Aug 2013
Posts: 580 |
115-grain TSX is designed to stabilize in a 10 twist. Barnes claims a 1-in-9" twist is required. ![[Linked Image]](https://www.24hourcampfire.com/ubbthreads/gallery/80/full/138674.jpg) I have discussed this before. When bullet makers list a particular twist on their website, or a box of bullets, it's because they're afraid somewhere, sometime a customer will shoot in "conditions" where a bullet might not stabilize--say when hunting below zero along the shoreline of the Arctic Ocean for caribou. It does not mean that a slower twist won't work fine for all other conditions. A good example is the .270-caliber 170-grain Berger EOL Elite Hunter. It has shot very accurately in two different 1:10 twist .270 Winchesters here where I live in Montana--and the two ranges I use are on the valley floor, 4000 feet above sea level--where its stability rating according to the Berger program is over 1.3, quite a way above the 1.0 minimum. It would be even more stable when hunting at elevations up to 9000 feet in the mountains above the valley--and according to Berger's own stability problem is "marginally stable" even in standard conditions of 59 Fahrenheit at sea level. Yet Berger suggests a 1:8 twist. This is NOT just to stabilize the bullet, but to maximize ballistic coeffcient--which tops out at a 1.5 rating. With the 170-grain .270 bullet, shooting it at 2750 fps at 4000 feet reduces the bullet's "maximum" G7 BC of .339 to .323. Big deal. You may well have discussed it on this forum previously, but following these threads can get slightly convoluted going down all of the rabbit holes where people lead us. A detailed "Handloader" may be worthwhile. I know I'd read it.
Jackie Treehorn: Treats objects like women. Montana uses Ruger actions.
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Joined: Dec 2013
Posts: 2,628
Campfire Regular
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Campfire Regular
Joined: Dec 2013
Posts: 2,628 |
I beat him by 12...December of '51. What day John? Mine was on the 20th. powdr You guys are just pups!
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Joined: Oct 2010
Posts: 1,364
Campfire Regular
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OP
Campfire Regular
Joined: Oct 2010
Posts: 1,364 |
I beat him by 12...December of '51. What day John? Mine was on the 20th. powdr You guys are just pups! Any Olde Farts that can compare their birth date to the ‘36 M70 .257 Roberts in subj article ? Any within a decade ? This would’ve been the first hunting gun for someone born in the early Twenties ! Maybe someone born earlier and saved up to replace a WWI conversion. Or an old family heirloom lever. What amazes me is how this design was so suited to its purpose, but evolved also. Ergonomics improved, witness the wing safety evolving into the SideSwing design. Allowing for low mounted scopes, Until Ocular, and more recently Objective lenses got too big for low mounting. Stocks changed dimensions to follow market preferences. An interesting glimpse of where we’ve been
History May Not Repeat, But it Rhymes.
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Joined: Jul 2001
Posts: 60,098
Campfire Kahuna
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Campfire Kahuna
Joined: Jul 2001
Posts: 60,098 |
Jackie Treehorn,
I did an article on bullet stability and rifling twist for RIFLE magazine, instead of HANDLOADER, long enough ago to expand it some as a chapter in the first BIG BOOK OF GUN GACK, published in 2015. It's chapter 4, "Rifling Twist."
“Montana seems to me to be what a small boy would think Texas is like from hearing Texans.”
John Steinbeck
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Joined: Aug 2013
Posts: 580
Campfire Regular
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Campfire Regular
Joined: Aug 2013
Posts: 580 |
Jackie Treehorn,
I did an article on bullet stability and rifling twist for RIFLE magazine, instead of HANDLOADER, long enough ago to expand it some as a chapter in the first BIG BOOK OF GUN GACK, published in 2015. It's chapter 4, "Rifling Twist." I'll have to revisit that.
Jackie Treehorn: Treats objects like women. Montana uses Ruger actions.
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Joined: Jun 2002
Posts: 11,951
Campfire Outfitter
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Campfire Outfitter
Joined: Jun 2002
Posts: 11,951 |
I beat him by 12...December of '51. What day John? Mine was on the 20th. powdr You guys are just pups! I like the 257R threads here and read them all. This one sure got weird. 
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Joined: Feb 2007
Posts: 4,047
Campfire Tracker
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Campfire Tracker
Joined: Feb 2007
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Joined: Oct 2017
Posts: 993
Campfire Regular
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Campfire Regular
Joined: Oct 2017
Posts: 993 |
I also devour any and all 257 threads and articles.
My son picked up a Roberts built on a Mauser action at a LGS about 3 years ago.
He has killed several deer with it. I have shot it extensively during load development and it is probably my favorite rifle in the stable to shoot aside from my 222’s.
It is a finicky rifle but it really likes 117 gn. Gamekings on top of IMR-4350. It is no problem to place five shots under an inch with this combo and they seem to kill well.
I would love to have a pre-64 Model 70 in a Roberts but in the the future will probably settle for any 257 I can get.
Really love the cartridge!
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Joined: Jun 2002
Posts: 11,951
Campfire Outfitter
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Campfire Outfitter
Joined: Jun 2002
Posts: 11,951 |
I would love to have a pre-64 Model 70 in a Roberts but in the the future will probably settle for any 257 I can get. A friend had one so I got to see it. I was surprised at how heavy it was scoped.
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Joined: Dec 2015
Posts: 8,284
Campfire Outfitter
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Campfire Outfitter
Joined: Dec 2015
Posts: 8,284 |
what magazine was this 257 Roberts in ? thanks,Pete53
LIFE NRA , we vote Red up here, Norseman
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Joined: May 2004
Posts: 2,673
Campfire Regular
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Campfire Regular
Joined: May 2004
Posts: 2,673 |
On my list of projects I'd like to do is a 257 Roberts in the fwt configuration on a pre 64 (fwt), as the factory should have done. Same list includes a 7x57 in the same config! Purely nostalgic vs. practical!
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