257 Weatherby Magnum Load Data
Webmanufacturer loading data list of cartridges by powder; Imr 7828 ssc (improved military rifle) starting powder: Webload data for. 257 weatherby magnum. Webrefer to the current speer® reloading manual for handloading instructions. 100 gr tsx (barnes) diameter:
Be thoroughly familiar with those instructions before using these loads. Webthe stoutest. 257 load is the 100 grain barnes tsx at 3570fps. /. 257 weatherby magnum loads reloading data with 51 loads. This is a good muzzle velocity for the barnes because at lower impact velocities of 3100fps and below, this. Web. 257 weatherby magnum (hodgdon data) warning! 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.
