I've had my Weatherby for many years and when I first got it I shot Remington Factory 180 gr loads and Weatherby 180 gr loads . The Remington's would regularly give about a 3/4" 5 shot group and the Weatherby Ammo would give about 1 to 1 1/8" groups . My hand loads averaged 1 1/4" to 1 1/2"regardless of bullet /powder considerations.
Last year I bought a head-space gauge and immediately realized my RCBS full length die is pushing the shoulder back about .006" . So the point of all this is I am about to try again . I bought a Lee collet neck sizing die and I am going to take some fired cases and try to work up a load. My reasoning here is these cases are the size of the chamber. Yesterday, just as a check I put the fired brass on a concentrisity gauge and the first 20 showed less than .001" run-out at the neck. When I get some bullets loaded in them I will check the bullet run-out.
If I can get loads that produce 1" groups or less than my next step is to get a set of those Redding competition shell holders and adjust my full length sizer till i get it to set the shoulder back .001-.002" .
If you have any thoughts or experience with this same or similar problem I would be interested in your thoughts.
Last year I bought a head-space gauge and immediately realized my RCBS full length die is pushing the shoulder back about .006" . So the point of all this is I am about to try again . I bought a Lee collet neck sizing die and I am going to take some fired cases and try to work up a load. My reasoning here is these cases are the size of the chamber. Yesterday, just as a check I put the fired brass on a concentrisity gauge and the first 20 showed less than .001" run-out at the neck. When I get some bullets loaded in them I will check the bullet run-out.
If I can get loads that produce 1" groups or less than my next step is to get a set of those Redding competition shell holders and adjust my full length sizer till i get it to set the shoulder back .001-.002" .
If you have any thoughts or experience with this same or similar problem I would be interested in your thoughts.