My son loves shooting an Uberti 1866 carbine in 44-40. I’m a new caster 2 sessions so far. I’m looking to get a mold for this cartridge. I’m leaning toward a Lee for economy. My question is 2 cavity or 6. One of my casting sessions was with Lee 312 155gr I’m using for my 30 cal rifles. It went well and I was impressed with ease of use and production for low cost. Is a 6 cavity any more difficult to use? We may shoot 500 rounds a year through that carbine at most. Feedback appreciated.