First post for new member so go easy on me.
I have recently been bitten by the Coyote bug and finally assembled a dedicated rifle for it. I had been using my 1:8t AR 15 but decided to build something for a bit longer range. My donor was a Savage Weather Warrior in .308 I picked up used. I fitted it with a Boyds VT thumbhole laminate stock, 6-24 scope, DNZ mounts and a McGowen 26" 1:8 twist SS bull barrel chambed in 22-250. The barrel is huge so I sent it off to get fluted by Kampfield Custom. Before I shipped it off I worked up loads with the 50g Vmax over 38g of RE15 the clocked at 3830FPS with excellent accuracy. I also worked up an 80g Hornady Amax load that has me a bit bewildered.
I decided to use Alliant Power Pro 2000MR because I get superb results with the heavies in .308 and .223. Usually 100 FPS minimum faster than others like Varget, RE15, XBR8208 and TAC. The Alliant site lists the max as 33.7g for a speed of 3076FPS. I worked up from 31g in .5 increments with max at 34. This is only 85% case fill with the uber long 80g Amax seated to 2.60. I got some amazing results on my Magnetospeed Chrono at the 34g load.
No pressure signs at all. Round primers, no ejector marks, easy ejection. So 200 FPS faster than Alliant. Alliant does not say what barrel length they use but who knows. Here is the group.
.73 MOA as read by my Ballistic AE app on the Iphone. Here is the ballistic table.
You have to love a High BC bullet and speed! So according to this my drop will 100" less than my 175 .308 load and still hit with 1400 FPS velocity and a tad under 400 Ft lbs of energy at over 1/2 mile! Normal Michigan Coyote distances are under 400 yards. So is 2400 FPS and 1092 Ft Lbs of energy at 400 too much for Coyotes? The A-max's can be explosive. Will I ruin any fur? Will I be better off leaving this "hammer" round for long range steel targets and stick with the 50 V-max?