Howa 20 heavy barrel
107 SMK
Starline brass-neck size .288
WSR primer
2.3 COAL-max mag length
VihtaVuori N-133-28 grains
2656 average velocity
SD 9
ES 25
Clover leaf 5 shot groups at 100 yds off a bench/sandbags.
Still need to test at 300 prone.
Ive had good results with Win 748
Excellent results with the 123 SMK and TAC. Still need to try TAC with the 107s
107 SMK
Starline brass-neck size .288
WSR primer
2.3 COAL-max mag length
VihtaVuori N-133-28 grains
2656 average velocity
SD 9
ES 25
Clover leaf 5 shot groups at 100 yds off a bench/sandbags.
Still need to test at 300 prone.
Ive had good results with Win 748
Excellent results with the 123 SMK and TAC. Still need to try TAC with the 107s