I am reloading my 22-250 which I want to use as a starter for the grandkids. I was wondering what loads are proving the most accurate. The cases I have now were loaded in 1979 with 35gr. of IMR4895 behind a 53gr. Sierra M-HP and Rem. 9 1/2 primers. Accuracy is "ground hog good at 660 yards" meaning I didn't keep records back then but varmits didn't stand a chance. Any suggestions will be appreciated. Also thinking about 55 grainers and possibly newer powders like Varget or H380. Your thoughts?