I used to have a Weatherby Ultra-lightweight in 7mm WBY and the best load I found for it was 73 grains of RL25 and a 160 grain Barnes X.It is a warm load so work up to it if you try it.
My hands down favorite load for my 7mm Wby Mag consists of Remington cases, Federal 215M primers, 72 grains of IMR 7828, and a Nosler 160 grain Partition.
I have experimented with any number of loads and bullets, but keep coming back to this.
R F
Posts: 1220 | Location: Hanford, CA, USA | Registered: 12 November 2000
I load a 7mm Wby for an Elk hunting buddy as follows. 160 grain Failsafe bullet, 70 grains RL-22 powder, Fed 215M primer. It is super accurate in his rifle. Good shooting.