257 WM advice

[Beruisis]

I have a slow twist 257 Weatherby Mag so I'm favoring the 100 gr pills, Any favorite loads? Deer & hogs are my prime target material.
Also does it do any good to anneal the case neck area for this cartridge?
Thanks.
B.

 

[Gary in MD]

With 100 grain bullets, I've had good accuracy with RL22 and IMR4350. IMR 7828 may give a little higher velocity.
I've killed deer out of my 257 Wby using 100 grain - Sierras; Hornadys; Nosler BT; Barnes tsx & ttsx. They all killed fast but I was really liking the Barnes TTSX. I loaded 115 Bergers this past year but didn't get a shot while carrying that rifle.
A 100 grain bullet started out 3500-3600 fps gets there quick and kills stuff just as fast. Try those Barnes tipped triple shocks and RL 22 with magnum primers.
Gary

 

[Danny1788]

My dad loads Ramshot magnum and a 100gr TTSX in the high 3680fps range, don't remember the exact speed. but ramshot magnum has been a great powder in the 257WBY as well as imr7828

 

[Gb300wm]

Imr 7828 and the Barnes 100 ttsx kills deer like lightning and is in the 3600 fps range. I've had plenty success with this combo.

 

[Sitsntree]

I use 66gr of imr 4350 pushing a 100 nosler btip it shoots a ragged 1 hole group of 5 shots at 100yds and kills awesomely