Not certain how many I will have to load to "break even", but for my 28 gauges, I recall store bought shells were always pretty healthy price - so I bought the MEC reloading set-up for 28 gauge - was able to come up with maybe 50 pounds of #8 and #7 1/2 shot - pulling together the bits to make my own shot maker here - with "free" shot (ha!), the 28 gauge seems quite reasonable to reload for - but maybe not worth it compared to cheap promo 12 gauge.