Morrey
Member
Hello all. I'm experienced loading mostly rifle and pistol (revolver) ammo for my .38/.357 Mag, but new to pistol auto loader reloading. I am adjusting my new 9mm dies on my Dillon press and wanted to reach out for the best seating depth (COAL) that experienced loaders have found to be most accurate.
I'm loading Win 231 (start with 4.5 grains) and 115 grain round nose heavy plated match bullets from RMR. I'm shooting thru my Glocks which are a G26 and a G43, so figure on a 3.5" barrel.
My question is seating depth and I see conflicting information. I measured a factory RN round and it measures 1.135, but loading data says 1.10. I set my seating die up with the factory round as my depth gauge for starters. I made several dummy rounds and put into the Glock mags...they load and chamber just fine at 1.135. BUT, loading data says 1.10...and I suppose deeper seating will cause a slightly higher pressure, but all is in the safe range.
So...any thoughts on the seating depth I should use?
I'm loading Win 231 (start with 4.5 grains) and 115 grain round nose heavy plated match bullets from RMR. I'm shooting thru my Glocks which are a G26 and a G43, so figure on a 3.5" barrel.
My question is seating depth and I see conflicting information. I measured a factory RN round and it measures 1.135, but loading data says 1.10. I set my seating die up with the factory round as my depth gauge for starters. I made several dummy rounds and put into the Glock mags...they load and chamber just fine at 1.135. BUT, loading data says 1.10...and I suppose deeper seating will cause a slightly higher pressure, but all is in the safe range.
So...any thoughts on the seating depth I should use?