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6.5x57 Mauser
 Moderated by: woodsman777, Timberghozt
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 Posted: Thu Oct 14th, 2010 07:36 PM
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nam72
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Anyone have a few loads for this round?Is the twist in a Jap 6.5 barrel  adequate?Plan on 120 gr. N. B.T. bullet and maybe use the new 8208XBR powder.Any ideas?I know I could go buy a rifle that will shoot underMOA right off the shelf but where's the fun in that? Making an old milsurp shoot well, now that's fun.



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 Posted: Sun Oct 17th, 2010 01:23 PM
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Jamie402
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My old Speer#8 manual shows this round, and I used these as the basis for my 6.5X.257RAI.

using a 120gr Spitzer FB they call for:
Primers:Rem9-1/2 or CCI250
24" Bbl BRNO Mauser
4831/45-49gr=2500-2773fps
4350/42-46gr=2563-2755fps
H380/36-40gr=2371-2618fps
4320/37-41gr=2531-2726fps
4895/35-39gr=2447-2665fps
780BR/43-47gr=2356-2610fps
N205/46-50gr=2573-2889fps
RL21/39-43gr=2564-2811fps

RED numbers are max listed
Keep in mind this manual is Copyright 1970, so it's an oldie!!
Being this old the 4831 listed should be H4831.
The 4350 listed should be IMR4350.
Start low and proceed with caution.
Using .244/6MMRem or .257Roberts cases make these easier than starting with 7mm or 8mm Mauser cases.

Good luck.
Jamie

Last edited on Sun Oct 17th, 2010 01:25 PM by Jamie402



 Posted: Fri Nov 5th, 2010 05:34 PM
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280shooter
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 Posted: Fri Nov 5th, 2010 06:05 PM
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nam72
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I have a Speer manual 1974. It states:6.5x57/257 Roberts is about 100 fps slower than yours 280shooter. My max velocity with 120's average 2800fps.

Dont matter ..How accurate is it? that's what matters.

 



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 Posted: Fri Nov 5th, 2010 10:53 PM
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280shooter
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I think that's out of an old Lyman. I scanned it a few years ago. Load data for this cartridge is requested every now and then. I'm loading 41.5 gr. 4320 with a 125 gr. Nosler Partition and getting 2714 fps out of an Arisaka carbine with about an 18-19" barrel. Accuracy has been surprisingly good. 3/4-1" at a hundred yards. It has been restocked, bedded, and has a Timney trigger.
I have been told that there is a slight difference in dimensions between the European 6.5X57 and the 6.5X257 Roberts.



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 Posted: Fri Nov 5th, 2010 11:29 PM
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nam72
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Sounds like a nice combo shooter.I just looked up the dimensions and the 257 bob @ the base is .007" dia. more than the jap. The mauser case is .004" larger than the jap. Is their any feeding problems with the extra diameter on any of these cases?I think maybe I'll go with the mauser cases. I have all the dies needed.Any idea what the COAL was on that load?



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 Posted: Fri Nov 5th, 2010 11:58 PM
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swampshooter
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I used to shoot 120 gr. Speer bullets out of a 6.5 jap with excellant accuracy that any Rem. 700 would be proud of.



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 Posted: Sat Nov 6th, 2010 12:05 AM
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280shooter
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Length is 3.060 I've never had any feeding problems. My Great Uncle brought the carbine back from WWII and my Grandfather had it converted years ago. When my Uncle gave it to my wife, it was sitting in a Rem 600 stock, held in place by a copious amount of Bondo. It was coffee cup accurate at 100 yds. I picked up a stock off Ebay, bedded it and then worked up this load. I was pretty surprised at how well it shot. My wife shot her first deer with it and I shot 2 or 3 antelope with it since then.



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 Posted: Sat Nov 6th, 2010 01:18 AM
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nam72
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I've loaded some 6.5 jap to play with for a while . I made 10 with 34gr. 8208XBR and 10 with 35gr. . When I get it to shoot decent ,then I'll change cartridges probably to the 6.5x57.

The COAL sounds perfect.I loaded the jap @ 3.050" to start. It only has about .120" of bearing surface but I dont forsee any trouble though.To start a new load, I like extending out the COAL.What's your thoughts guys?



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 Posted: Sat Nov 6th, 2010 02:07 AM
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runfiverun
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there is 6.5x57 data in the hornady manual.
i didn't know that [and had it on the shelf]
so i started with 6.5x55 data.



 Posted: Sat Nov 6th, 2010 02:17 AM
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nam72
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I'm glad you mentioned that. Why cant you load hotter in the 6.5x55 like you can in 6.5x57. I understand the age of action and strength are the deciding factors but I've heard that said somewhere. Would the twist make a big difference? Like the jap is 8.375 to 1, while the swede is 7.87 to 1. . I would think the longer twist in the jap would be better for a faster 6.5x57 velocities.What ya think?



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 Posted: Sat Nov 6th, 2010 11:17 PM
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runfiverun
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the slower twist is condusive to lighter bullets.
but by increasing the velocity, you could stabilize the heavier bullet.
in rifles like the cz-550 i would think you could load up the round to a higher pressure easily.
in the 7mauser it has been loaded to the 45k cup level for ever, till hornady brought it into the 1900's and it will rival the 270.
and the ackley will push into some of the real world 7 mag velocities.
which many re-loaders have been doing for years.
the rifles strength is certainly something i would consider when dealing with some of these off mainstream rounds.
but you have to tread lightly as pressure data ain't available and reading the signs is all you got.



 Posted: Sun Nov 7th, 2010 12:50 PM
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nam72
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The length and bearing surface of the 6.5 is long and the stabilising effect is very good.Love the bullit. I think the 6.5x57 is just what I need when I'm ready to cut a new chamber.Until that time I'll shoot the 6.5 Jap to the max.Since I've mounted a scope to the rifle , I can see to shoot. This could be fun..



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