If you can wreck a swaging press, consider what would happen to a reloading press only 50% as capable! Concerning those old Mity Mite Presses and 'M' dies ( particularly the 44. and 45 sizes), they are excellent tools, but do wear as does anything. Corbin used to sell replacement parts for these older presses and probably still do. Too, if you were swaging other than pure lead, the stress could have easily been more than the dies or link pins could take. The difference between BnH 5 and 6 is great; between 5 and 8, huge. Some of the Corbin LSWC and Core dies have larger squirt holes and can therefor handle lead alloy up to around 6 or 7, but when you get 1/2 way between pure and wheelweight alloy(BnH14) you are on very thin ice with your MM tooling. Today, the Series II and 'S' press line, and the Walnut Hill press have much greater capability, but both manufactures stress the use of pure lead only. As to cost: owning a bullet swaging system, particularly one of the Corbin's ( RCE is one of the Corbin brothers), is money in the bank if you take care of it. Lately, swagers who have sold some of their gear on eBay have gotten from 90-110% of their investment back!