The Hornady 178-grain BTHP
Superformance Match round produced a group dispersion of .
We found the second major crosshair from the bottom was sufficient for our 500-yard shooting with either Hornady BTHP
match loads or the Black Hills load featuring the 69-grain Sierra MatchKing.
The 110-grain BTHP
had a muzzle velocity of 2, 393 fps.
The Hornady 168-grain BTHP
and the 175-grain Buffalo Bore Sniper round registered nearly exactly the same velocity in comparison with NATO M852 and NATO M188LR.
(Boattail Hollow Point) Superformance Match (catalog number 8077, lot number 3121176) for those who must stretch caliber 7.
I didn't have any of the Hornady ammo on-hand, but did have some "Hunter" ammo from CorBon (180-grain DPX load wife Suzi had used in Africa with great success), some Federal 165-grain Trophy Bonded loads and the always brilliantly accurate Black Hills 168-grain BTHP
The 77-grain Sierra BTHP
has been successfully loaded to 2.
The Marines were responsible for requesting Sierra to develop the 175-grain BTHP
(Boattail Hollow Point) bullet, as the 168-grain BTHP
projectile was designed for 300-meter applications and often goes back through transonic velocity at about 800 meters.
In my rifles 1:9" stabilizes such excellent bullets as the Hornady 75-grain BTHP
and Sierra 77-grain MatchKing.
8 Ambush two inches high at 100 yards, a Hornady 110-grain BTHP
bullet will be just below zero at 200.
308 Federal 168-grain Match and a small amount of the new Hornady 178-grain BTHP
Match Superformance ammunition, which also shot very well.
Simply put, your Sierra 77-grain BTHP
bullets may be lousy in every gun except for the one with the 24-inch bull barrel, the 1:8" twist and with the max load of Varget.