Finally got to work up some loads with 286grain hornady sp
RE 15 ,Fed 210, lapua brass, COL 3.300, -2C, 100yds
55.5g 2205fps 1.1 inch group
56.0g 2231fps 1.3 inch group
56.5g 2234fps 1.02 inch group
57.0g 2260fps 0.95 inch group.
Shot with bushnell 1.25-4 x 24 on 4 power. CZ medium. Only 3 shot groups so perhaps they would open up a little. More impressive maybe is that all 12 shots would fit in 2.2 inches. That set trigger sure seems to help on the bench.
There is no load data for this bullet so where do I stop? 58g RE15 is max for a 286NP at around 2400fps. The latest factory ammo from hornady has this bullet at 2360 fps. Very happy up to this point but I would like to get closer to 2400fps. (I know , I know......)
Other point is that at 3.300 the bullet is out past the cannelure, still with .200 freebore. So I assume pressure and velocity will be less than with a bullet seated to the cannelure and shorter OAL?
I will load 57.5 and 58 g but expect this will only just creep up to 2300fps. (again, i know)