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View Full Version : How about the 257 Weatherby??



Marlin Junky
05-23-2013, 01:42 PM
Has anyone tried using cast in the 257 Weatherby?

According to QuickLoad, 19 grains of Alliant 2400 with RCBS 257-120 should give approx. 1800-1900 fps with < 20K PSI (24" bbl). I used a COL of 3.2" and a boolit length of 1.023".

MJ

DLCTEX
05-23-2013, 07:24 PM
I have the gun, mould, and everything else but time. It is on my bucket list.

Marlin Junky
05-23-2013, 08:30 PM
I have the gun, mould, and everything else but time. It is on my bucket list.

1:10 or 1:12 twist?

MJ