I just got a 500 in the Handi.I bought a box of Hornady's 300 gr. Evolutions. Has anyone ever chronographed these out of 22" barrel,or a load close it the 300 gr.How many FPS do you think I'm picking up in the longer barrel.I want to do a ballistic chart to see what it does at a 100 yds. and out.Thanks,Dave.