Mt Al,
If you take care of it, 60 cases will last you a long time. Your loading procedure sounds really good, but I couldn't understand about one thing. When you neck size, you didn't say how far down you size it. I use old CIL cases which are balloon head and are notorious for separating at the head. I discovered that the chambers of rimmed and belted cartridges in older rifles are usually longer than necessary. Setting the sizing dies by the usual instructions usually results in setting the shoulder back, which is blown back on the next firing. It doesn't take many cycles of this (depending on chamber depth and case type) before the case head is blown off. By setting the sizing die to "kiss" the shoulder you change from headspacing on the rim to headspacing on the shoulder and stops setting the shoulder back. If you worry about running out of cases for 43 Mauser, start saving 45-90 cases whenever you can find a good deal on them. I convert 45-70/90 rims to Mauser Base type, for looks; but as long as you size them to headspace on the shoulder, they will work fine without that. It is only necessary to reduce the rim diameter to fit the rim recess. The "book" says the rim should be .585" but .595" fits my rifles. Since the 45-70/90 head diameters are a little smaller than the Mauser Base they will expand on the first firing and making the rim fit the rim recess precisely ensures the expansion will be even. I size all my cases, rimmed, belted, or rimless this way. The only extra step necessary, when hunting, is to make sure each round chambers. (Ammo and loading die makers have to make sure their products fit in all rifles, we only have to make sure our ammo fits our rifles, and we don't need to build in tolerances.)
Mike