Nothing wrong with a single stage press for the most part, and it has been my path since 1970, with exception of supporting shotguns for clays. Use a MEC progressive for that. I don’t load for machine guns so life is good. I doubt that progressive presses are useful for pursuing precision.
Factoring cost of time in pursuit of the pastime is absurd. Saving money? Maybe, maybe not. Check prices on .416 Rigby ammo and get back in touch. For that matter, just about any ammo price these days is nutz. Components aren’t cheap these days, but the prices will drop in time, and a little common sense applied to component purchase will go a fair ways down the road. Another option is casting. One can scrounge or purchase lead and even today $1/# is doable. One pound will make about 13 Quigley bullets, or ~155 Hornet bullets. Do the math.
I have little use for hot cartridges or whiz-bang velocity, but precision gives me a smile. Factory ammo is generally better these days, but I have found none other than .22 RF that I can’t beat. Sooner or later I’ll win the RF Derby.
