Recommended load 257 WBY Mag

[Iron Worker]

Reading great reviews on these Barns Triple X BT bullets . So acquired a box of 100gr Blue tipped bullets ,what are some suggested loads ?

 

[Dmagna]

Barnes lists good load data on their website. But it's hard to say what is good depending on the powder and other stuff you have.

 

[257Tony]

Was just going to say, get some 100 GR ttsx, and a max charge of 7828. Pretty much hold on fur out to 400.

 

[WildBillG]

I would do what 257Tony said but try Rl 22. Max load of Rl 22 gave me 3606 out of a 26 inch Remington 257 Wby.

 

[Dmagna]

I would do what 257Tony said but try Rl 22. Max load of Rl 22 gave me 3606 out of a 26 inch Remington 257 Wby.

RL 22 is too temp sensitive

 

[Steves1911]

I'm still playing around with the 100gr ttsx this powder shortage is making it tough. Right now my best load is with reloader 26 for 3570fps but I think that powder is a little too slow for 100gr pills. Plan on trying some imr4955 one day soon to see if that will give me some more speed.

 

[okie man]

H-1000 if you want temp insensitivity. 7828 if you want flat out speed

 

[Dmagna]

I hit 3700 FPS with n565 and the 100 ttsx.

 

[Nomosendero]

I hit 3700 FPS with n565 and the 100 ttsx.

Which barrel ?

 

[Trm82]

My buddy shoots mkV ultra light with RL26 at 3800 FPS with 100 gr ttsx

 

[GTN]

I push them to 3600 with RL22 and a 26" tube. I do plan on swapping to RL23 when I run out of 22.

 

[koonazz]

I have a Mark V Accumark Limited, shooting 98 grain Shockhammers. 77.7 gr RL26 produced a .246" 5 shot group @ 3915 fps avg velocity.

 

[koonazz]

Velocity measured with magnetospeed.

 

[Quintus]

I will second RL22, RL23, H1000, and IMR7828. All will work very well with that bullet.