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OP
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Been waiting for one since 1983 when I bought my 25/06...
Any ballistic engineer(s) want to tackle the pros/cons of such an offering?
There is plenty of horsepower to drive it.... no, it wouldn't beat a Weatherby in velocity...
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Joined: Sep 2001
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Campfire Ranger
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Campfire Ranger
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Most 25-06s are twisted 1/10. A 130 gr bullet would most likely need a faster twist to stabilize, except maybe a roundnose.
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Posts: 96,121
Campfire Oracle
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Campfire Oracle
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Yep, not enough twist and God knows the makers are slow to change twist, pun intended.
"Dear Lord, save me from Your followers"
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Joined: May 2005
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Campfire Tracker
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Campfire Tracker
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It is not necessary. Anything you would hunt with a 130gn bullet can be taken by a flatter shooting 115gn - 120gn and most likely a plain old 100gn.
JW
When truth is ignored, it does not change an untruth from remaining a lie.
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Joined: May 2009
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Campfire Ranger
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Campfire Ranger
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Joined: Oct 2009
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OP
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Gee, replies so far are interesting but a little short on a some engineering references...
As in, how do all the [heavier] 6.5, 7mm, 30 and even larger caliber bullets work in a 1x10 twist? Can you cite a controlling formula...?
An engineer, is there an engineer in the house?
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Joined: Sep 2001
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Campfire Ranger
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Campfire Ranger
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...how do all the [heavier] 6.5, 7mm, 30 and even larger caliber bullets work in a 1x10 twist?... They don't.
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Campfire Ranger
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Campfire Ranger
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Generally speaking, 1/8 handles the long 6.5mm, 1/9 handles the long 7mm. 1/9 handles the long 30s.
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Joined: Jun 2007
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Campfire Ranger
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Campfire Ranger
Joined: Jun 2007
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It would suffer in sales to the 270 comparison, right or wrong....
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Joined: Oct 2009
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Campfire Member
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Hodgdon Powder Company Manual #27
270 Waetherby Mag, 1X12 twist, page 132 30/40 Krag, 1x10, page 174 7MM STW, 1x10, p. 166 300 Win. Mag, 1x10, p.203
Looks like you were NOT a ballistics engineer in the marines...
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Campfire Ranger
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Campfire Ranger
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I don't think Hodgdon has loads for what MM would consider "long".
Sierra, probably, with a twist spec.....
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Campfire Ranger
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Campfire Ranger
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Oh I see, you're a smart guy.
I was an Arty/Naval Gunfire FO.
Get yourself a 1/10 7mm and go have fun with some 180 VLDs, or a 1/10 308 and some 240 SMKs, or a 1/10 260 with 140 VLDs. Be sure and get back to us on the results.
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Campfire Outfitter
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Campfire Outfitter
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Looks like you were NOT a ballistics engineer in the marines... I think Montana knows how to call in rounds from 16" guns to drop on a nats azz.
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Campfire Tracker
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Campfire Tracker
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Seems the 270 has 130 grain covered pretty nicely. Not sure how much market there would be for a harder recoiling 25-06 that offered nothing the 270 didn't already do just fine.
DJ
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Campfire Oracle
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Campfire Oracle
Joined: Dec 2008
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270 Waetherby Mag, 1X12 twist, page 132
Looks like you were NOT a ballistics engineer in the marines...
Looks like you didn't win any " Keyboard Commando" Spelling Bees.... Ingwe
"...the left considers you vermin, and they'll kill you given the chance..." Bristoe
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Joined: Jun 2007
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Campfire Ranger
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Campfire Ranger
Joined: Jun 2007
Posts: 21,953 |
A lot of Euro made stuff sported slower twists...like Waetherby's (grins)
My gunsmith has a 1-16 222 Sako; he wanted BT's and had to run 40's to get them to spin.
I read Ken Waters had a hell of a time with 200gr. bullets and a 300 Mag of some Euro sort. He found out it was twisted 1-12.
Alas....
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Campfire Member
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OP
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Mr. Montana Marine et al:
Read the original post, a 130 grain bullet in 25 caliber; I will now qualify it as a 130 grain "hunting" bullet and not a VLD.
Not trying to be a smart guy, just trying to gain an answer with my preferred level of credibility.... looks like you guys don't 'really" know.
Despite your illustrious artillery experience, I see no formula, nor a reference to a ballistics engineering degree (perhaps you have one) So, I guess I will call Sierra someday....
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Campfire Oracle
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Campfire Oracle
Joined: Dec 2008
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Mr. Montana Marine et al:
So, I guess I will call Sierra someday.... Radical thought and concept.... Ingwe
"...the left considers you vermin, and they'll kill you given the chance..." Bristoe
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Joined: Jun 2007
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Campfire Ranger
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Campfire Ranger
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Posts: 21,953 |
Does the "hunting" bullet have a plastic tip or a BT, or is it a semi-spitzer RN?
Lotsa folks might want a 175 gr. Ballistic Tip for hunting, but Nosler found your 1-10 not to work very well....
Kinda like a 130/1-10/25-06, depending on bullet shape, might not work very well. It sure won't sell in a semi-spitzer....
You can go Greenhill formula, but its subject to more than what it takes into consideration....
Last edited by HawkI; 03/07/10. Reason: 10
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Campfire Ranger
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Campfire Ranger
Joined: Nov 2007
Posts: 29,626 |
Credibility comes only from a degree in your world?
From what I've seen, MM has a post-grad in this stuff from experience if not from an institution of higher learning.
For what its worth (I don't have a degree in communications, so maybe my experience won't suffice) I have emailed Sierra and found them very responsive.
I'd like to hear if their explaination is substantively different from that of MM. I have a feeling... and while you're at it check and see what sorts of degrees those guys have. You never know what sort of BS they're shoveling (or not shoveling... pun intended).
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