The iron sights on my rifle are really bad; the trigger pull is long and creepy, but it is a military rifle. Shooting from sandbags at 50 yards I can barely keep five rounds inside of 5 inches. I'm using load data that came with the Lee dies; there's darn little data published anywhere. (I think Hornady also makes dies.)
As I said, my rifle has a headspace problem; the primers on every fired case have backed out. Probably needs a new barrel, but I'm not going to buy one. There are probably no really good barrels for sale anyway.
The Mosin-Nagant is probably a better bet for all the reasons stated by others on this post; I am mostly a paper target shooter and like to experiment with different rifles. In 1895 with the dawn of the smokeless powder age, the Styer was state of the art. I bought mine out of curiosity; probably look for a genuine German-made Mauser 98 soon.
If I were going to buy a straight pull design I’d probably spend the extra money and get one of those Swiss K’s.
The reason your primers are backing out,is because the load data from Lee is too light.
I had the same problem with the primers backing out in all 5 of my M95’s,until I found better load data.No,I have no problems with the primers backing out.
I use 50 grains of IMR 4350 with the Privi 208 grain FMJBT from Grafs,or 45 grains of IMR 4320 with the same bullet,good for 2300fps.