If I had to do it over again with just ONE cartridge, Id choose the 300 H&H.
I already have one in #1, amongst many 700 action rifles...
For some reason, the classic feel of this round gets me every time I crack open my ammo boxes for it.. Norma brass and a stiff charge of RL19 with a 168 CT.
for a stock Ruger # 1 Medium Sporter chambered in that round--- she does under 3/4 moa-- rain or shine. I can't complain about that.