jenstapio
FNG
Hey roksliders, figured I would see what input you have.
I am working on my 300 norma improved custom that I have.
Shooting 230 bergers with N570 and ADG brass
While doing my load development I am finding that I am getting a tight bolt. "Bolt Click" The guy who built my gun said he usually finds a node on the rifles at 90-94 grains of N570 at 3080-3100fps. I found a good node at 92.4 at around 3095-3100 fps but I was getting a tight bolt. So a dropped down to find a lower node and I still had a tight bolt all the way down to 3044fps. I pulled the firing pin and bolt lug to ensure I was sizing brass enough and bolt closed on its own at the length I am resizing to, about .002 below fired length. So I'm not sure why I'm getting the tight bolt this low. The only thing I'm doing different than the guy who did the build is that he runs Laupua Brass and I'm running ADG. Could this be the problem? I tried looking for a carbon ring buildup in the chamber as well but didn't see anything obvious. If you guys have any input i'd really appreciate the help.
Thanks!
I am working on my 300 norma improved custom that I have.
Shooting 230 bergers with N570 and ADG brass
While doing my load development I am finding that I am getting a tight bolt. "Bolt Click" The guy who built my gun said he usually finds a node on the rifles at 90-94 grains of N570 at 3080-3100fps. I found a good node at 92.4 at around 3095-3100 fps but I was getting a tight bolt. So a dropped down to find a lower node and I still had a tight bolt all the way down to 3044fps. I pulled the firing pin and bolt lug to ensure I was sizing brass enough and bolt closed on its own at the length I am resizing to, about .002 below fired length. So I'm not sure why I'm getting the tight bolt this low. The only thing I'm doing different than the guy who did the build is that he runs Laupua Brass and I'm running ADG. Could this be the problem? I tried looking for a carbon ring buildup in the chamber as well but didn't see anything obvious. If you guys have any input i'd really appreciate the help.
Thanks!