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#6221978 - 02/25/12 10:44 PM 7x57 20" barrel
Shadow9 Offline
Member

Registered: 02/22/11
Posts: 136
Loc: New England
Fast question - with a 1:8.75 twist, what are the capabilities and behavior of a 20" barrel in 7x57?
Specifically - Is it enough to get 175's to expand, or the 162/168's or does the 7x57 really benefit from a longer barrel?
Ranges would be up to 250-300 yds, absolute max. likely 100-150yds. Bone or soft tissue.

Also, blast and recoil - I know short barrels get jumpy, and they can produce some pretty good blast too. I was not so fond of the blast/recoil on the 7-08 scout I had, although that was a 18" barrel.

Thanks!

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CI16728
#6222001 - 02/25/12 11:02 PM Re: 7x57 20" barrel [Re: Shadow9]
OldRooster Offline
Campfire Ranger

Registered: 09/01/09
Posts: 2098
Loc: West Virginia
The 8.75 twist should stabilize anything you want to shoot. Getting the heavies to expand is going to be a function of bullet construction and velocity. A 20" tube will give you some muzzle blast, not over the top but noticeable. Felt recoil is primarily going to depend on rifle weight, bullet weight and velocity, You do not indicate what game you intend to hunt with the rifle. If you are primarily hunting deer then 140s or 150s will be adequate.

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#6234133 - 02/28/12 10:33 PM Re: 7x57 20" barrel [Re: OldRooster]
Shadow9 Offline
Member

Registered: 02/22/11
Posts: 136
Loc: New England
OldRooster, Thanks for the reply!
Game would be deer to get going, eventually I would like to take on Elk, but that's a few years off...

I guess the better question to ask is whether a 20" barrel hurts the speeds of the 7x57.

Where my curiosity stems - the 6.5x55 CAN work in a 20" barrel, but most who really work it stick to 22" minimum, and prefer 24-26" for best velocity, using slower-burning powders. Same true for 7x57? Modern action, btw.

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#6234514 - 02/29/12 05:33 AM Re: 7x57 20" barrel [Re: Shadow9]
Ron_T Offline
Campfire Tracker

Registered: 04/14/03
Posts: 6620
Loc: 10 miles north of Dayton, Ohio
I shoot a Ruger #1 International (20" barrel, Mannlicher style stock) in 7x57 and, YES, the shorter-than-24-inch-barrels won't give quite the muzzle velocity of the longer barreled rifles, BUT... getting 2800 fps or close to it out of my Ruger's 20-inch barrel isn't a problem.

My hunting load (for deer) is a 140 grain bullet in front of 50.0 grains (a MAXIMUM "published" LOAD) of H4350 sparked by a standard Winchester large rifle primer in Remington cartridge cases.

There are a good many different 140 grain bullets available for the 7mm... and while I have always used Nosler Partition Bullets for hunting big game in .338 Win. Mag. and .300 Savage, I may end up using the flat-based Sierra 140 grain ProHunter bullet which is a very accurate, cup & core type bullet, but quite adequate for deer-size game.

For elk, I'd recommend a 160 grain or a 175 grain Nosler Partition Bullet in front of a healthy charge of H4350 powder. My Ruger #1 "loves" H4350 in any amount and has shot 3-shot groups as small as .176 inches at 50 yards using 37.2 grains of H4350... and if you want ASSURED expansion as well as deep penetration, then use the still excellent Nosler Partition Bullet in 160 or 175 grains.

My deer hunting load (50.0 grains of H4350 & a 140 grain bullet) has shot 3-shot groups of .404 inches with a noticeably heavier (but not objectionable) recoil and a louder report... with a muzzle velocity of around 2800 fps out of it's 20-inch barrel.

Good hunting... smile


Strength & Honor...

Ron T.
_________________________
It's smart to hang around old guys 'cause they know lotsa stuff...


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#6234585 - 02/29/12 05:57 AM Re: 7x57 20" barrel [Re: Shadow9]
260Remguy Offline
Campfire Kahuna

Registered: 12/18/02
Posts: 15633
Loc: NE
I think that having a 20" barrel on a long action rifle might cause balance issues, unless the barrel is a magnum contour.

Depending on the powder you use, you could get a pretty impressive muzzle flash with a 20" barrel, particularly obvious at first/last light.

Jeff

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#6234595 - 02/29/12 06:00 AM Re: 7x57 20" barrel [Re: 260Remguy]
Rancho_Loco Offline
Campfire Kahuna

Registered: 12/06/04
Posts: 17858
Loc: MONTANA
20" barrel is great for the 7x57.. Allows it to better fit in the trash can. grin
_________________________
Originally Posted By: derby_dude
A rifle using standard velocity ammo with a suppressor tend to be louder than without the suppressor.

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#6234605 - 02/29/12 06:04 AM Re: 7x57 20" barrel [Re: Rancho_Loco]
ingwe Offline
Campfire Oracle

Registered: 12/19/08
Posts: 51320
Loc: Southwestern Montucky
You will smoke a turd in hell for that!

BASTID! cry
_________________________
" I told my Pap and Mam I was comin' to the mountains匨other Gue I said,the Rocky Mountains are the marrow of the world. And by God I was right."
Delgue

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#6234623 - 02/29/12 06:09 AM Re: 7x57 20" barrel [Re: Rancho_Loco]
trouthunterdj Offline
Campfire Tracker

Registered: 04/30/08
Posts: 5073
Loc: Northwest Iowa
Originally Posted By: Rancho_Loco
20" barrel is great for the 7x57.



Rancho Loco is right.

You may lose 50-100 fps over some longer barreled 7x57's but I doubt the deer will notice. Also, it has been my experience that shorter barrels tend to shoot better.


ddj
_________________________

Many men go fishing all their lives without knowing that it is not fish they are after. - Henry David Thoreau

The best part of hunting and fishing was the thinking about going and the talking about it after you got back. - Robert Ruark

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#6234700 - 02/29/12 06:30 AM Re: 7x57 20" barrel [Re: trouthunterdj]
magshooter1 Offline
Campfire Ranger

Registered: 07/19/11
Posts: 1717
Loc: South Arkansas
My 1895 Chilean Sporter sports a 21" barrel and aside from lower velocities I've never had any of the issues that concern you.
_________________________
Some people are educated beyond their intelligence.

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#6234702 - 02/29/12 06:30 AM Re: 7x57 20" barrel [Re: trouthunterdj]
magshooter1 Offline
Campfire Ranger

Registered: 07/19/11
Posts: 1717
Loc: South Arkansas
My 1895 Chilean Sporter sports a 21" barrel and aside from lower velocities I've never had any of the issues that concern you.
_________________________
Some people are educated beyond their intelligence.

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