Components are what will get you in this day and age. When I was shooting a LOT of shotgun (65000) or so a year I was in all the way. Sporting clays, skeet (all gauges!), 5-stand, trap etc. Even at a few bunker events and live pigeons now and then. Started out with a Mec 9000 in each gauge/caliber.
Ended up with a Spolar hydraulic with all the conversions. I could literally make better then factory ammo, especially in the sub bores. $$20k plus the gun, carrier barrel and tube set, pfs stock, wood stocks x2.
To really cut costs I bought a shot maker. Dropped over 7 tons of shot. BUT, I had a friend that owned several Goodyear dealerships for free wheel weights. Made money on that, saved much money on the 28, and 410.
When I got out of it I was doing a box of 28 or .410 for less then 4 bucks. AA or Remington equivalent. 12 or 20 was less then that.
Short story long, unless you are going to get into manufacturing on a scale like that, making shot with something like a Littleton, you won’t save a nickel over buying the couple a boxes of shells you might use one weekend out of the month.
Regards, Rick Gibbs