I have a Remington 700P 26 inch barrel that I have worked up a load for the Sierra Match King 168 grain that will shoot just under a 1/2 inch at 100 and less than 2 inches at 300. I tried working up the Nosler 165 Ballistic tip as I have to use this gun on an Antelope hunt the end of the month and the best I can get at 300 yards is just over a 5 inch group. I spent a lot of time on the 165 and it looks like I am going to have to try something else. Any suggestions would be appreciated.