Based on my ballistic software a 7mm 300 Win. Mag. shooting a 180 grain Berger out of a 26” barrel at 3175 fps., would need a load of 75 grains of N165 and the pressure is a whopping 57,950 CUPs or 69,500 psi. which is well over the 50,100 CUP or 58,500 to 59,000 psi. baseline I am using for...