Can you explain ? - 07/25/18
Have a Vangaurd 300 Weatherby , have tried the Nosler reloading Data that says max load was the most accurate with 7828 SSC under 180gr E-Tip . I think 84.5 or something I think was max load . Anyway I started in the middle with 82.5 gr and groups were terrible , also loosening primer pockets to the point they were either loose or fall out .
Any ideas as to what might be going on ?
Bought it used , thought maybe it was copper fouled , this past weekend scrubbed the bore with JB bore paste and mopped it out with patches of Butches Bore Shine , then dry patched it . Used a 7.62x51 chamber brush wrapped in 30 cal. patches to mop out the chamber . Then fired two fouling shots off paper . This time I tried 200gr SGK over 77gr 7828SSC first shot went 9 o'clock of bull three inches right , second shot 11 o'clock of bull three inches above first shot , third shot almost touching first shot , fourth shot , two inches low at 6 o'clock of bull , fifth shot almost touching fourth .
Action screws , scope base screws , lock ring screws have all been tourqed .
Let gun cool while shooting other rifles , then tried IMR4350 , forget grains at moment , not at home , don't have access to target , but it was with in .5 gr of Sierras max load for 200gr SGK . Two inches low at 6 o'clock of bull with next four rounds going in for a one inch five shot group . Three of them overlapping .
Any ideas why primer pockets were getting stretched with the E-tips ? And accuracy so poor .
Kenneth
Any ideas as to what might be going on ?
Bought it used , thought maybe it was copper fouled , this past weekend scrubbed the bore with JB bore paste and mopped it out with patches of Butches Bore Shine , then dry patched it . Used a 7.62x51 chamber brush wrapped in 30 cal. patches to mop out the chamber . Then fired two fouling shots off paper . This time I tried 200gr SGK over 77gr 7828SSC first shot went 9 o'clock of bull three inches right , second shot 11 o'clock of bull three inches above first shot , third shot almost touching first shot , fourth shot , two inches low at 6 o'clock of bull , fifth shot almost touching fourth .
Action screws , scope base screws , lock ring screws have all been tourqed .
Let gun cool while shooting other rifles , then tried IMR4350 , forget grains at moment , not at home , don't have access to target , but it was with in .5 gr of Sierras max load for 200gr SGK . Two inches low at 6 o'clock of bull with next four rounds going in for a one inch five shot group . Three of them overlapping .
Any ideas why primer pockets were getting stretched with the E-tips ? And accuracy so poor .
Kenneth