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#6281274 - 04/30/16 10:26 AM Interesting article on the .270 in American Rifleman
FiremanJG Offline
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Registered: 12/16/08
Posts: 17893
Loc: Wolfe City, TX
I've wondered for years how the bullet came to be, and was sitting between the 6.5 mm and very close to the 7mm. This may be an explanation.

"It is said that the development of the .270 began in 1923. Surely Winchester engineers didn't pull the bullet diameter out of thin air, so at that time their reason for settling on .277" must have been based on some sort of rationale. Unfortunately, it seems to have been lost to the sands of time."

"If you think about it, it's an odd choice: The difference between .277 and 7mm is just 0.007", truly not enough to argue about. The difference between .270 and the 6.5 mm is a bit more, 0.013", but still hardly enough to get worked up over."

"It does seem that the company's goal was to increase velocity and flatten trajectory by necking down the .30-06 Sprg. case- perhaps with an eye toward reducing recoil as well. An internet search turned up several interesting comments, including that the 6.5 mm and 7mm were "European" bullet diameter, both with numerous cartridges and case dimensions already on the market, but unlikely to sell well in a post-World War I America. And there was still one incredibly simple explanation that never, ever crossed my mind: Multiply our popular .308" diameter by .90 and the result is .277". So the .270" is 90 percent of, or 10 percent smaller than , the then-standard .30 caliber. Perhaps that is coincidence and the explanation remains lost- or perhaps that 10 percent represented the engineering design goal."


That seems very plausible to me.
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#6281324 - 04/30/16 11:31 AM Re: Interesting article on the .270 in American Rifleman [Re: FiremanJG]
SapperTitan Online   content
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Registered: 11/17/10
Posts: 17039
Loc: Killeen/Ft Hood, TX
Interesting stuff. I love my 270
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#6281681 - 04/30/16 07:23 PM Re: Interesting article on the .270 in American Rifleman [Re: FiremanJG]
Buzzsaw Offline
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Registered: 06/29/11
Posts: 5023
Loc: Frisco, Texas
.270, todays 130 gr bullets at 3000 fps.......Hummmm

just like the 7mm Mag, 6.5's etc great long range cartridge????????????????????

why not?????????
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#6281695 - 04/30/16 07:31 PM Re: Interesting article on the .270 in American Rifleman [Re: FiremanJG]
chital_shikari Online   content
Minor in training

Registered: 08/03/11
Posts: 11387
Loc: Katy, TX
Very cool
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#6281818 - 04/30/16 09:05 PM Re: Interesting article on the .270 in American Rifleman [Re: FiremanJG]
txtrophy85 Offline
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Registered: 08/12/05
Posts: 22026
I heard that a Winchester rep went to China and found a .277 training round that was in development and borrowed the idea
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#6281834 - 04/30/16 09:19 PM Re: Interesting article on the .270 in American Rifleman [Re: FiremanJG]
Navasot Offline
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Registered: 09/22/11
Posts: 25909
Loc: Normangee/Navasota TX
My favorite
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#6281853 - 04/30/16 09:33 PM Re: Interesting article on the .270 in American Rifleman [Re: FiremanJG]
charlesb Offline
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Registered: 04/07/10
Posts: 1408
Loc: West Texas mountains
I had good luck with a 270 WSM, but have only briefly owned a 270 Winchester that I was putting together for a gift rifle. - I got to shoot it a little bit, getting it sighted in and found that it was indeed more pleasant to shoot than the 30-06. Not a lot, but definitely enough to notice.

I like hearing about the history of any cartridge. The 270 has a lot of history here in the US, and appears to be popular all over the world.


Edited by charlesb (04/30/16 09:34 PM)
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#6281854 - 04/30/16 09:36 PM Re: Interesting article on the .270 in American Rifleman [Re: Buzzsaw]
charlesb Offline
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Registered: 04/07/10
Posts: 1408
Loc: West Texas mountains
Originally Posted By: Buzzsaw
.270, todays 130 gr bullets at 3000 fps.......Hummmm

just like the 7mm Mag, 6.5's etc great long range cartridge????????????????????

why not?????????


The story that I remember hearing was that barrels in 270 with the kind of twist rates that the long range shooters prefer are unobtainium. - And there were comments about the kind of bullets that are available in 277.

Anything can be shot at long range, if you tip the barrel up enough - but there's a lot more to it than that if you are wanting to compete with other shooters.


Edited by charlesb (04/30/16 09:39 PM)
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#6281980 - 05/01/16 06:33 AM Re: Interesting article on the .270 in American Rifleman [Re: FiremanJG]
Texas Dan Online   content
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Registered: 07/28/08
Posts: 11238
Or it may have been the more simple matter of finding good use of a hug overstock of 30-06 casings left over from WWI.
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#6282035 - 05/01/16 08:07 AM Re: Interesting article on the .270 in American Rifleman [Re: Texas Dan]
txtrophy85 Offline
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Registered: 08/12/05
Posts: 22026
Originally Posted By: Texas Dan
Or it may have been the more simple matter of finding good use of a hug overstock of 30-06 casings left over from WWI.


The .270 was based off a .30-03 casing
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Originally Posted By: Nogalus Prairie
I think the deer hunting shows and "Bro' Country" are going to be the downfall of this once-great nation.

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#6282166 - 05/01/16 10:41 AM Re: Interesting article on the .270 in American Rifleman [Re: SapperTitan]
BigPig Online   content
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Registered: 08/27/09
Posts: 9478
Loc: Forney, Tx
Originally Posted By: SapperTitan
Interesting stuff. I love my 270


X2
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Ever spit it out rather than swallow it?

Originally Posted By: pegasaurus
Enjoy it while you can. One day you might be complaining about NOT getting random pop-ups in the morning. grin

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#6282192 - 05/01/16 10:58 AM Re: Interesting article on the .270 in American Rifleman [Re: FiremanJG]
Buzzsaw Offline
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Registered: 06/29/11
Posts: 5023
Loc: Frisco, Texas
.270 was my first center fire rifle. 1968 Remington 700 BDL, stamped, Flure De Lies checkering, no bolt shroud. Probably one of the best out of the box shooters I ever saw, had a Redfield 3-9X on it. Ended up sending it to Brown Precision for new barrel and one of those newfangled composite stocks. Hunted with it many many years.

there will probably never be one set up for super long range because of bullet selection, custom barrel twist rate, etc.

biggest reason, so many others available , much easier.
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King George Straight



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#6282239 - 05/01/16 11:43 AM Re: Interesting article on the .270 in American Rifleman [Re: Buzzsaw]
ckat Offline
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Registered: 12/02/09
Posts: 1069
Loc: Lubbock Area
Originally Posted By: Buzzsaw
.270 was my first center fire rifle. 1968 Remington 700 BDL, stamped, Flure De Lies checkering, no bolt shroud. Probably one of the best out of the box shooters I ever saw, had a Redfield 3-9X on it. Ended up sending it to Brown Precision for new barrel and one of those newfangled composite stocks. Hunted with it many many years.

there will probably never be one set up for super long range because of bullet selection, custom barrel twist rate, etc.

biggest reason, so many others available , much easier.


No bolt shroud, or the early shorter shroud???

Interesting excerpt, FJG. I guess the nostalgia got you interested in diving into the 27 caliber? grin

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#6282267 - 05/01/16 12:17 PM Re: Interesting article on the .270 in American Rifleman [Re: FiremanJG]
Buzzsaw Offline
THF Trophy Hunter

Registered: 06/29/11
Posts: 5023
Loc: Frisco, Texas
early ,short one, sorry
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King George Straight



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#6282299 - 05/01/16 12:39 PM Re: Interesting article on the .270 in American Rifleman [Re: ckat]
FiremanJG Offline
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Registered: 12/16/08
Posts: 17893
Loc: Wolfe City, TX
Originally Posted By: ckat


No bolt shroud, or the early shorter shroud???

Interesting excerpt, FJG. I guess the nostalgia got you interested in diving into the 27 caliber? grin


Never.

I just always wondered how it came to be. Being so close to 7mm in diameter. Berger is now making a high BC bullet in .277" But I have a 7 Rem Mag shooting 180's.I have no need for a 270. If ever I had a regular long action to build something on, it would probably be a 6.5mm or 7mm, or maybe even a .30 cal round.
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