I have a 650 and I occasionally do "high volume" .223 or .308 on it. I was recently sizing some 1X fired military .223 brass, and as I was swaging the primer pockets it with the Dillon swaging tool I was wondering if one might be able to do this on the press itself - replace the primer seater with a specially shaped swaging tool. The only "gotcha" I can think of is that th press holds the case by only half of its rim, I wonder if that is strong enough to swage the primer pocket without distorting the extractor groove? (my guess is that it would probably be OK...) Anybody try this....? I was even thinking of suggesting this to Dillon, or asking their opinion on it.
When processing once-fired brass, I have found that it is not necessary to trim them. Obviously at some point trimming will be necessary.
I have a Dillon RT1200 and I use it only rarely, I find it is a colossal pain. It is really fast (that's the good part), but it is noisy as hell, needs a shopvac or equivalent to suck away the chips (even more noise!!), and it cuts the case mouth very squarely leaving a very sharp edge that needs chamfering both inside and out.
It's actually the RT1200's need for chamfering that (mostly) defeats its utility as a high-throughput tool for me. I wonder how/if others have solved this problem?
I loaded boat tail bullets. No problem at all.
As for using the 650 for swaging, don't waste your time. Without a backing die supporting the case, you'll break your shellplates quickly. Dillon has heard about this idea, and swiftly pointed out such a conversion wouldn't work and would result in unwarranteed breakage.