|
|
Joined: Aug 2004
Posts: 33
Campfire Greenhorn
|
OP
Campfire Greenhorn
Joined: Aug 2004
Posts: 33 |
i'm in the process of building a 7mm Mauser off of a new production M70 FWT. will be used as mainly a deer gun with the occasional Wyoming antelope thrown in. planning on using mostly 120-150 gr bullets, don't need anything heavier as i have a .358 Norma Mag for the big stuff. what is the ideal twist rate for this rig? thinking 24" Douglas Premium barrel, i also seem to recall reading something about a specfic reamer to use so it does not have excessive throat meant for the long 175's.
.358 Norma Mag. enough said.
|
|
|
|
|
Joined: Dec 2007
Posts: 10,258
Campfire Outfitter
|
|
Campfire Outfitter
Joined: Dec 2007
Posts: 10,258 |
I believe that Mule Deer wrote in an article that he had a custom 7X57 built and told the gunsmith that he wanted it to shoot 140's and the gunsmith had it riffled in 1:11. It shot 140's very well but would not shoot 160's. I think that I would do it in the standard 1:9 or 1:9.5 and it would shoot anything.
Ed
A person who asks a question is a fool for 5 minutes the person who never asks is a fool forever.
The worst slaves are those that put the chains on themselves.
|
|
|
|
|
Joined: May 2004
Posts: 3,951
Campfire Tracker
|
|
Campfire Tracker
Joined: May 2004
Posts: 3,951 |
Send a PM to Redneck. He built something similar for a member here, ( huntr, IIRC ) using the customer's reamer. Lee helped spec out the reamer. Heck, just get him to re-barrel.
Everything you now do is something you have chosen to do. Some people don't want to believe that. But if you're over age twenty-one, your life is what you're making of it. To change your life, you need to change your priorities.
|
|
|
|
|
Joined: Aug 2004
Posts: 33
Campfire Greenhorn
|
|
OP
Campfire Greenhorn
Joined: Aug 2004
Posts: 33 |
Heck, just get him to re-barrel. LOL wish i could, but the laws on either side of the border make it too much of a headache...
.358 Norma Mag. enough said.
|
|
|
|
|
Joined: Jul 2001
Posts: 60,177 Likes: 20
Campfire Kahuna
|
|
Campfire Kahuna
Joined: Jul 2001
Posts: 60,177 Likes: 20 |
I would use the standard 1-9. Accuracy will be fine even with 120's, and some of today's 7mm bullets in the 150-grain class do better with 1-9.
“Montana seems to me to be what a small boy would think Texas is like from hearing Texans.”
John Steinbeck
|
|
|
|
|
Joined: May 2004
Posts: 3,951
Campfire Tracker
|
|
Campfire Tracker
Joined: May 2004
Posts: 3,951 |
Sorry, I missed your location. 
Everything you now do is something you have chosen to do. Some people don't want to believe that. But if you're over age twenty-one, your life is what you're making of it. To change your life, you need to change your priorities.
|
|
|
|
|
Joined: May 2004
Posts: 56,174 Likes: 16
Campfire Kahuna
|
|
Campfire Kahuna
Joined: May 2004
Posts: 56,174 Likes: 16 |
I am..........disturbed.
Concerning the difference between man and the jackass: some observers hold that there isn't any. But this wrongs the jackass. -Twain
|
|
|
|
|
Joined: Jul 2004
Posts: 13,436
Campfire Outfitter
|
|
Campfire Outfitter
Joined: Jul 2004
Posts: 13,436 |
My new 7x57 is 1-9", and shoots 140 gn Partitions very well.
I have two older ones that are 1-10", and they shoot the same bullet well. I doubt that I'll shoot anything heavier than the 140's.
Don Buckbee
JPFO
NRA Benefactor Member
NSSA Life Member
|
|
|
|
|
Joined: Feb 2009
Posts: 827
Campfire Regular
|
|
Campfire Regular
Joined: Feb 2009
Posts: 827 |
I did mine with the 1 in 9 as well and it puts the 120gn GS HV into amazingly small spreads as it does with the 160gn Woodleigh.
Von Gruff.
Von Gruff.
Exodus 20:1-17
Acts 4:10-12
|
|
|
|
|
Joined: Jul 2003
Posts: 1,586
Campfire Regular
|
|
Campfire Regular
Joined: Jul 2003
Posts: 1,586 |
.
From the 7 x 57 in an 1895 Chilean Mauser...
What twist is needed to stabilize the Sierra 175 grain boattail ?
.
|
|
|
|
|
Joined: Dec 2009
Posts: 10,653
Campfire Outfitter
|
|
Campfire Outfitter
Joined: Dec 2009
Posts: 10,653 |
Currently have three 7x57s with three different twists. 8.75", 9" and 10". All shoot 115gr to 160gr bullets with a good degree of accuracy and each prefer a different bullet weight and brand for exceptional accuracy.
You're Welcome At My Fire Anytime
|
|
|
|
|
Joined: Feb 2007
Posts: 16,512
Campfire Ranger
|
|
Campfire Ranger
Joined: Feb 2007
Posts: 16,512 |
I keep things simple.
7mm - 9
6 and 6.5mm - 8
30 - 10
338 - 10
358 - 12
Those will handle most any bullet w/o problems w/solid accuracy IME if you are not shooting bonafide benchrest.
|
|
|
|
|
Joined: Jan 2004
Posts: 10,915
Campfire Outfitter
|
|
Campfire Outfitter
Joined: Jan 2004
Posts: 10,915 |
I use 1~9 twist barrels on my 7X57's
|
|
|
|
|
Joined: Sep 2003
Posts: 235
Campfire Member
|
|
Campfire Member
Joined: Sep 2003
Posts: 235 |
|
|
|
|
|
Joined: Sep 2003
Posts: 235
Campfire Member
|
|
Campfire Member
Joined: Sep 2003
Posts: 235 |
Dang double tap.
Last edited by glazer1972; 09/29/10.
|
|
|
|
|
Joined: Nov 2004
Posts: 17,281 Likes: 2
Campfire Ranger
|
|
Campfire Ranger
Joined: Nov 2004
Posts: 17,281 Likes: 2 |
Factory twist for reference:
7 x 57mm - 1 in 8" . . . . . . . . . . .Ruger (present)
7 x 57mm - 1 in 8 1/2" . . . . . . . .Winchester 70 (post 64)
7 x 57mm - 1 in 8.7" . . . . . . . . . .FN
7 x 57mm - 1 in 8 3/4" . . . . . . . .Winchester 54, 70 (pre �64); Ruger 77
7 x 57mm - 1 in 9" . . . . . . . . . . .Mannlicher-Schoenauer; Thompson/Center Rifle
7 x 57mm - 1 in 9 1/4" . . . . . . . .Remington 700
7 x 57mm - 1 in 9 1/2" . . . . . . . .Ruger 1, 77 (old); Savage 110
7 x 57mm - 1 in 10" . . . . . . . . . .Winchester 70
geo
"I have sworn upon the altar of God, eternal hostility against every form of tyranny over the mind of man."
Thomas Jefferson
GeoW, The "Unwoke" ...Let's go Brandon!
"A Well Regulated Militia" Life Member
|
|
|
|
|
599 members (160user, 219 Wasp, 1lessdog, 1minute, 1badf350, 68 invisible),
2,517
guests, and
1,296
robots. |
|
Key:
Admin,
Global Mod,
Mod
|
|
|
Forums81
Topics1,193,189
Posts18,503,386
Members73,993
| |
Most Online11,491
Jul 7th, 2023
|
|
|
|
