I have a hard time thinking the MV is that far off as well. I have a .280 ackley that I am shooting Nosler factory ballistic tip ammo out of. I just got the gun and took it to the range, ran the numbers and took it to 800. I did estimate the MV being a bit slower than advertised, but my 200 yard zero and 16.3 MOA correction at 800 was correct. Since I confirmed my numbers, I adjusted the zero to 100, and showing about 9” drop at 300. I know this is what you already know, but I am in agreement that something doesn’t add up