
Welcome to it, and get ready to have some fun!!
Those things,(handis in general) have really long throats, so don't worry about trying to "jam" any bullets, seating too sammi is usually fine or at least enough to keep runout at a minimum.
Although each gun is it's own, most of these will shoot handloaded 55grn bullets really well for starters. Mine will shoot sub moa at 200 with Nosler Balistic tips and surprisingly the Rem 55fmj into a dime at 100 (open up at 200 though).
I've never seen one preform well with max loads so that's another plus, you can save powder.
Varget seem's to be a great preformer in mine with H4895 a close second.
Once you get all the factory "new" packing oils and greases cleaned from the bore, Handis (again generally), like a fouled bore for it's best accuracy. My 223 won't dial in until it's had at least 8-10 rounds down the bore after a full cleaning. It will heat up and string, I'm just saying it likes a fouled bore.
Well that's a few tips, be sure to read and re-read the accurizing tips in the faqs, there is SOO much in there you simply can't take it all in with just one read (took me a month, and I still go back)