well long time coming, weather final got 74f this am and 84 when I left the range, no longer 95-100f wind was about 5-7mph from 4-5:00
my 700 varmint trued, rem 26" bbl re-chambered by Bobby Hart, (for pd etc. scoped good) HS stock bedded
the factory 223 chamber was awful and bbl scoped good so re chamber/crown etc. good reamer
R/P brass, 7 1/2 primers Sierra 50bk and tried 4198, 2015, 3031, h335,LT32 -
H4198 24.gr - 3514fps 7sd, .350" 5 shot group - may try 24.2gr re case nominal expansion at pressure ring .3764
LT32 25.5gr 3573fps 16sd .381 5 shot --pressure ring .377 may try .1-.2gr less and revisit
I tried ladder test on all powders and arrived at these two re the groups and velocity, Oehler 33 and dial micrometers for case measurement.
Fun
Bob
my 700 varmint trued, rem 26" bbl re-chambered by Bobby Hart, (for pd etc. scoped good) HS stock bedded
the factory 223 chamber was awful and bbl scoped good so re chamber/crown etc. good reamer
R/P brass, 7 1/2 primers Sierra 50bk and tried 4198, 2015, 3031, h335,LT32 -
H4198 24.gr - 3514fps 7sd, .350" 5 shot group - may try 24.2gr re case nominal expansion at pressure ring .3764
LT32 25.5gr 3573fps 16sd .381 5 shot --pressure ring .377 may try .1-.2gr less and revisit
I tried ladder test on all powders and arrived at these two re the groups and velocity, Oehler 33 and dial micrometers for case measurement.
Fun
Bob