Starting Load Data for 6.5x57 Mauser

[fly741]

Hi all,
I'm wondering if any of you have any starting load data for the 6.5x57? I inherited this rifle from my grandpa but did not acquire any of the load data and of course none of my manuals have this cartridge listed. Thanks for the help.

 

[MLC]

What bullet, what powders?

 

[fly741]

any suggestions? I do have a lot of RL19 and RL22 kicking around but i'm wide open for suggestions. I would like to stay with a 120gn bullet. I think he was using 120gn speer bt.
thanks

 

[MLC]

RE19 starting ala Sierra is 42.9 listing a max at 49.
Check this out too.

 

[fly741]

Great thanks! we'll give this a try.

 

[fly741]

So is the 6.5x57 the same as 6.5x257 Roberts?

 

[MLC]

Depends on who cut the chamber and what your dies are.
In theory they are the same but there may be some minor dimensional differences.

 

[tsiero]

The current Hornady loading manual has data listed for the 6.5x57 mauser. Also the 6.5x55 data is a good starting point. I shoot both of these calibers.

 

[tsiero]

The cases are different between the6.5x57 mauser and the 6.5-257 Roberts. The 257 roberts version will have too much headspace. I use 257 Roberts +P cases for my 7x57 gun.The neck up andfire fine. Using the 257 or 7mm mauser cases woun't work unless you go through fireforming procedures. I went and used RWS 6.5x57mm cases instead.