I also have an XL750 + MBF, I really only use mine for pistol though... boatloads, I can turn out 800+rds of match-grade 9mm an hour easy. I have toyed with the idea of getting the stuff for the caliber conversion for rifle stuff though, but I have a single-stage setup just for rifle so I haven't gotten around to it.
A friend of mine who is a kick ass shooter and who actually got me into PRS shooting and bolt guns loads all his shit on an S1050, and he hangs with most sponsored shooters every match he hits. Watching how his setup rolls makes me kind of jealous actually.
I totally recommend the Inline Fab Ultramount, full height, it's perfect height if you're around 6' tall. Lyman makes a Universal Press Mount too that is actually legit (it's almost like it could've been made by Inline Fab). I also highly recommend the Inline Fab Ergo roller handle, head and shoulders better than the stocker or Dillon's roller handle.
Dillon dies suck, don't bother. Get decent dies like Redding, Hornady Match Grade, even Lee (the Lee Universal decapping die is awesome BTW).
For a case dryer I have the Frankford Arsenal one that's like $45 off Amazon and it's fine (they're all just really food dehydrators anyways). It's worth the couple bucks, I'll always chuckle when guys with a ton of pricey gear are still drying their brass on a towel or pissing off their wives using their stove lol.
I wet tumble with SS pins to clean but have a vibratory tumbler too (mostly for tumbling off lube), if you can afford both, get both. The dry media vibratory method has it's merits for certain things, but wet tumbling with SS pins pretty much returns your brass to new (Armor All Wash & Wax + a little Lemon Shine).
I'm going to be the bad guy and say you can skip the powder check (unless you'd just feel better), it's nearly impossible to throw a squib/double charge unless you purposely try to with an auto-indexing press, or without making a mess with powder spilling over. You'd have to do something impressively-amazing-stupid to mess this up filling rifle cases. I'd also skip the pricy calipers unless you just really want them, the tolerances we use for precision rifle are tight, but decent $50 calipers will do fine unless you just have to have the best, the targets won't care and your groups won't shrink because of expensive calipers. Honestly, you'll probably never regret having the nice scale, but that's not even really needed either as long as you have one that's accurate enough (legit within 0.1gr) and consistent. With a progressive auto-dropping powder into cases with a pull of the handle you may never be perfectly on your target weight, but +/- .1 - .2gr on average drops aren't unrealistic, some of the newer temp-stable ball powders are your best friend here.
For a bullet puller, get a cheap kinetic bullet puller for when you fuck up or certain tasks, hopefully you won't need it often lol, throw away the dumb collet thingy they come with and just use a single-stage shell holder in it's place, works awesome.
If you're already going progressive, you don't need to get all caught up or get too deep in the weeds with this shit. Some guys nerd out and get WAY too into this and make it overcomplicated, spending more time reloading than shooting. On the rifle side of the house over here, a lot of the guys don't even really understand auto-indexing progressive presses, and in no time you'll probably be making more ammo in a weekend than some guy, who tells you you've sinned against humanity for depriming and sizing at the same time and not uniforming your flash holes, does in a whole year. Truth is, a lot of the extra reloading steps or extra brass prep steps guys do only makes them feel better. You don't have to anneal and trim brass every single firing to get SD's in the single digits or make good ammo.
Guys get so caught up in reloading they seem to forget that unless they're purely shooting Benchrest or F-Class pretty seriously, most of the extra steps mean almost net zero as compared to just going out and practicing and getting good at reading/calling wind! Some of the guys around here will tell you that unless you buy a $5000+ Prometheus, you might as well not even bother reloading hahaha
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