I've been reloading more than 50 years. I too find it boring cranking out load after load on my Dillon 550. I also have an RCBS Rockchucker for rifle ammo.

However, I do enjoy problem solving such as learning to wash and tumble brass or discovering the primer pocket uniformer which makes seating primers a breeze.

I've thought of upgrading to a Dillon with an automatic case feed but I don't shoot enough to warrant the investment. I too am satisfied to crank out 100 rounds at a sitting.