waltp I have one It is a troublesome child but It's not all It's fault !Alot of the problem
is with dies and new brass dosn't really matter who's dies you use they are 375 winchester in which they are designed for the most part .375 slugs so the sizer is purdy much useless for that then there expander die purdy much useless to it's .375
so what you are looking at just the belling on that die. see most 38-55 bores are .379 + my H@R - NEF bore is .379 I have a mint bore 94 winchester sporting rifle that
has a .381 bore and it's a 1901 vintage great condition but can walk around this problem I CAST .379 30/1 SLUGS then they will bump up to fill the bore . I dont size
keep cases seperate between rifles after firing at that point I dont need expand then but I LOAD BLACK so things change a little then compared to smokeless but not
alot also load smokeless just a few different tricks. as far as H@R TARGET IT has bastard chamber by saying that it case length of 38-55 but set up for .375 slug and the bore is .379 kind of strange but not to say it cant be made to shoot I got mine to shoot clover leafs at 100 YARDS BUT IT TOOK A LOT OF TWEAKING!! a real learning
experience their more to this but to tell you the truth it was worth the chase.
I WOULD SAY if you shoot factory loads from it 2-3 inch groups from what I been hearing for the most part and I cant really say about other current rife chambers
IF YOU LIKE A RELOADING CHALLANGE THEY WILL SHOOT!! DO IT!
Iam not good at putting it down in print so I hope this helps you not scare ya!