A No-Go gauge would rule out your rifle. Being factory loaded ammo shoots fine I’m thinking the Win. brass is your problem. If the brass came in a red and black Winchester bag , that stuff is awful when it comes ti quality.
This is what Hornady’s LnL bushing press does. You thread your die into a bushing that has an o-ring under the bushing flange and lock it into the press. I’ve been using these for years and wether or not it helps I’m not sure.
Both will easily do the job. What range are you looking to hunt at? For me if the 4 boxes of the 180s are the same lot would be my choice , load and go without worries of another load work up.
I tried this 800 grit cylinder hone today. It did help 3 drop right out 1 hangs up a little and 1 needs to be pulled out. This is way better , I’ll have to mark the cylinder the next time to see if the same hole is the issue.
I’ve gone from slow to mild and wild , they just stick. New the first 5 rounds with factory Federals hung in there. I’ve settled on HS-6 and H110 for now , I do have a little Blue Dot left might give it a try some time.
My understanding is the HBN coated bullets allow the first cold bore shot to be grouped with the following shots. It does make it easier to clean the bore. Whether it does save the life of the throat is debatable.
I’m on the fence on trying it on 378 when I get it up and running.
Wether it’s a light cast load or a full load of H110 and 240s they all stick. I’ve learned to deal with it but I’m looking to see if I can improve it somewhat.
Picture doesn’t show the grooves very well.