Reloading for .257 Weatherby with Retumbo, OR anyone got a Speer#14 Manual?

[SomebodyTookMyName]

Hey folks, I'm doing some load development for a friend's .257 Weatherby, and I need some help. I need load data for using Retumbo with a 100 grain bullet. Now, there are a ton of loads out there for H1000, H870, RL22 and loads of other slow burning powders, BUT I can't seem to find anything for Retumbo.

Normally, I'd just buy some H1000, but there's a nasty shortage of it out here so I wanna stick with my reserve of Retumbo if possible.

I have heard that there is a load listed in the Speer #14 Manual, if anyone has it, would you please be so kind as to look it up for me?

Thanks!

 

[sniper58]

Speer #14 says 71.0 - 73.0 for Retumbo and 100 gr. bullets. Velocity 3283 - 3411 fps

I haven't tried Retumbo with 100 gr bullets, but I'm getting 3320 fps & 1" groups at 200 m with Retumbo and Berger 115 VLD bullets

 

[SomebodyTookMyName]

Excellent! Thank you very much!