I finally got to cast some Lee 410-300-FN's for my Swiss Vetterli and took her to the range.
The high left was an initial sighter. The high right was me. If I had done MY job this would have been all touching. This rifle makes me happy.
My CF conversion is an RCBS decapping pin through a piece of thick tie wrap. Cases are PPU 8mm Lebel formed as others here have done. I'm using the Lee dies. This target is with 22.7 gn SR4759 and an OAL of 2.15" (The cases are 38mm)
This "Winter" project has been a bit of a challenge between time, weather, and various little hurdles. I also had lots of problems with the Lee Bullet seating die, and even the expander leaving the mouths too wide. Then on the initial range trip was cut short - I had difficulty extracting - I was wondering if maybe I had overloaded at 21.7gn of 5744, but then noticed scratches on the brass - the chamber had a nasty burr, which shortened that effort.
The Lee 300 gn doesnt really want to fit at 2.2 inches in my rifle - closing the bolt isn't possible unless I seat it at about 2.1-2.15" OAL (it's sloppy because my early cases are not identical in length.) The metplat on the 300 gn flat nose shows engraving; I think it's going to take a different "rounder" boolit to get 2.2" and the action to cycle. I was thinking of the 240gr TC or RN that Lee has, and cutting the cases longer.
Obviously, I need to do something with these sights - I held this 6.5" under at 25 yards; a couple of random shots at 50yards hit the top of the 11.5" target when POA was the bottom.