My Friend and I went to the range. We tested his Rem SPS Tec 308 20" bbl 1:12 twist rifle. it has a new vortex Viper pst
He reloaded two different bullets, the Berger 155 VLD Hunting, (.439 bc?) and the 155.5 Berger Target VLD with a .483 BC. all groups today was 100 yards.
the Hunting VLD's with less BC shoot well. 3 shot groupings of 0.75 inch, 0.65 inch, .375 inch and 0.195 inch besting my best group of today with my 204 of 0.210 inch.
He is using 45.5 of Varget on both bullets, yet the 155.5 Berger Target bullets group like 2.5 inches at best.
I know his throat on the 308 is so long that he can not get the 155's to touch the rifling with the bullet barley in the mouth of the case.
Not sure why the higher BC Bergers shots like crap and the other one does not.
could it be the higher bc bullet being longer does not have enough spin on them leaving at 2650 fps (chonoed). or is a jump to the lands/rifling too much for the high bc VLD?
I feel bad as I talked him into buying these bullets for his new 308. He wants to be able to shoot to 1000 yards. and with his short barrel, I told him this will be pushing it, and 2650-2700 fps and a a 483 bc bullet would keep him comfortably over super sonic to 1000 yards (1250 fps)
I have some 168 (496 bc) and 185 (547 bc) Hunting Hybrid VLDs I shoot in my 300 winni I may let him try out