The G1 ballistic coefficient for this bullet is .719. The fact that it exceeds 0.7 is world class long range capable of delivering game killing energy at over 600 yards for the 6.5 Creedmoor.
Tech Talk – It has been said that the bullet has a secant o-give and needs more room away from the lands when chambered than your normal bullet but having said that, it does not take from accuracy on bullet jump.
A few days ago, I loaded up some Nosler AccuBond LR’s in 142 grain with IMR 4350 and W760 Powder specified by Nosler in my almost new Ruger American. I used 41.5 grains IMR 4350 and 40.5 grains of W760 powder, max loads. I selected the powder because they were among the fastest at the muzzle and geared for delivering lots of energy at longer ranges.
The cases were Nosler Custom and the primers were CCI BR2’s. Cartridge overall length followed the Nosler Manual of 2.805 and they fit the Ruger magazine perfectly and fed perfectly.
First IMR 4350 cold shot with the Ruger American was 1 inch higher than subsequent 4 shots. Accordingly, I eliminated the cold barrel shot from the group. If I included it the spread was 1 1/8 inch and if I eliminated it the spread was 7/8 inch.
Estimated velocity out of the 22 inch barrel was around 2670 fps after subtracting 60 fps and the 2 more inches in the Nosler manual using a 24 inch barrel compared to the 22 inches of the Ruger.
The W760 Powder shot 1 3/16 five shot group with an estimated velocity of 2610 fps accounting for the shorter 22 inch barrel.
Examination of the primers looked normal and extraction was easy. These loads were terrific.
The results indicate that this grouping for IMR 4350 is terrific for shots in a 6 inch circle at 600 yards. Further that the energy for deer suggests 650 yards where 1000 ft-lbs was calculated and the velocity was 1802 fps. Windage at 90º moved the bullet 28 inches at 10 mph crosswind. That is a lot! Quartering crosswind of 14 inches. The shooter would have to adjust for the crosswind or get closer to the game, a much better scenario. At half that distance 325 yds the shooter would only be off by 6 inches in a 90º wind and have elk killing energy of 1500 ft-lbs.
Below is the Ruger American Predator. A great affordable rifle for anyone!
The Scope was a Leupold VX-3. See them at https://www.leupold.com/search?q=vx3
In a perfect world, early morning and just before dark usually offer little wind for those longer shots.
Killing game cleanly is the name of the game!