I am new to reloading and have been loading for a 300 winmag using 77gr H1000 and 212gr ELDx, ran a pressure and velocity test without issue to max 77.6 and settled on 77gr for a velocity node. However seating depth test has me frustrated as the best I can get is 1.1 with the norm being 1.5-2.5 moa.
I started .020 off the lands and worked backwards in .010 increments until I was at SAMI spec on COAL, bullet seating depth was measured by the ogive to ensure consistent seating depth.
I don't want to throw in the towel on H1000 as it was hard to get my hands on it and it gives great velocities but when I did the exact same process as above with H4831 the seating depth test was night and day as most groups averaged .5-.8 with the worst being 1.5 moa.
Since H4831 just seems to work with this load and supplies are limited I dont want to waste more shots chasing accuracy unless there is something I am missing or other tricks to try.
Thanks
I started .020 off the lands and worked backwards in .010 increments until I was at SAMI spec on COAL, bullet seating depth was measured by the ogive to ensure consistent seating depth.
I don't want to throw in the towel on H1000 as it was hard to get my hands on it and it gives great velocities but when I did the exact same process as above with H4831 the seating depth test was night and day as most groups averaged .5-.8 with the worst being 1.5 moa.
Since H4831 just seems to work with this load and supplies are limited I dont want to waste more shots chasing accuracy unless there is something I am missing or other tricks to try.
Thanks