IMMORTAL said:So far my longest groundhog kill with my 22BR is 515yds. Load data is a 50gr. Vmax,Rem 7 1/2,and 29.6gr. of Benchmark.
I would say it is a 650-700yd. gun.
potatoe said:I have to disagree with immortal (no hard feelings . But those light weight. 22s lose a lot of energy out there. It is really good out the gate but the BC has too much drag to keep velocity up and the wind will not be your friend. I'm not saying you won't hit them but I think you will start seeing "crawl always" once you get past 400 yds.
lpreddick said:The 55 berger varmint bullet's BC is .210 and at 3600 fps it has 593 ft-lbs energy at 400 yds. It drops to 319 at 500 yds and 221 at 600 yds. I'm not sure how many ft-lbs energy needed to humanely kill a ghog assuming perfect placement and bullet expansion, but less than 300 ft-lbs is possibly pushing it. The sierra bk at 3600 fps boast a BC of .271 which delivers in excess of 300 ft,-lbs at 600 yds! Consulting a ballistic calculator tells one a lot about drop, drift and energy.