257 weatherby

[bigred94]

One more question, can you form 257 brass from 7mm brass?

[scope eye]

One more question, can you form 257 brass from 7mm brass?

Yes you can they will end up a bit shorter, but as long as they are all the same your fine, you can also use 264 win mag, the way I resize 7mm rem is first run it though my 264 winmag die and then the 257 WBY dies, you can go from 7mm to 257 but they don't come out as nice, but nothing a good fire forming won't cure.

Dean

[scope eye]

Just an FYI once I worked on a piece of 300 WinMag, for over an hour sizing triming and what not, I finally got it to chamber, but definitely not worth it time wise anyways, although I probably could have cut that time down to 15min, after a couple under my belt, but you have to draw the line somewhere.

Dean

[Rooster 50]

Dean thanks for the info. I have some great RWS 7mm brass that is once fired that i will try it on..

[bigred94]

dean I hate to keep brothering you but I have searched and searched and no where can I find any load data using r17. I would like to used this powder because its what I use in my 300wsm but just not sure where to start. I will be using 75g to 90g bullets only for this rifle. any info or clues would be very appreciated

thanks
Dan

[scope eye]

Hey BigRed no such thing as bothering me, I am always happy to contribute, Just use H4350 load data for your RL17, that's what I did since
the beginning and it has worked out fine, a lot of folks do not know this but Weatherby's chambers, are rated at something like 72000 psi, the factory loads that use to be available were insane they have since toned it down, but there was a time that you could get a factory load with over 8000 pounds of muzzle energy, that's a 500gr bullet at almost 2800FPS my shoulder hurts just thinking about it, I loaded some for an guy that was getting over 3000 FPS with a 32 inch barrel 125gr of RL19 and a 500gr bullet, anyway sorry for getting off track if you have any other questions PLEASE feel free. check out this link.

Dean

http://data.hodgdon.com/cartridge_load.asp
and this one
http://www.reloadersnest.com/frontpage.asp?CaliberID=35

[bigred94]

Thanks so much! That was the issue I was having. I did not know data to start with to sub the r17. When running a very high chamber psi, that pressure is on the barrel, not the action? I guess what I am trying to ask is a savage action can handle a large psi load? ( I am guessing so since you have the exact gun I am starting on)

[scope eye]

Yes they can stand the pressure, my 257 and 270 started out in life as Stevens 200 7mm Rem Mags, my 300 WBY is a mark V Accumark, those 9 locking lugs and the smoothness of that action is a work of art.

Dean