Web103 rows · the ultimate reloading manual.
/. 257 weatherby magnum loads reloading data with 51 loads.
Webthe stoutest. 257 load is the 100 grain barnes tsx at 3570fps.
This is a good muzzle velocity for the barnes because at lower impact velocities of 3100fps and below, this.
Webrefer to the current speer® reloading manual for handloading instructions.
Be thoroughly familiar with those instructions before using these loads.
Webmanufacturer loading data list of cartridges by powder;
Web. 257 weatherby magnum (hodgdon data) warning!
Webload data for. 257 weatherby magnum.
100 gr tsx (barnes) diameter:
Imr 7828 ssc (improved military rifle) starting powder:
Webcharge velocity charge velocity load powder (grains) (fps) (grains) (fps) density (%) imr 4831 65. 5 3589 69. 5 3858 93 supreme 780 67. 5 3527 71. 5 3812 87 xmr 3100 66. 5.
