I think I finally found the caliber and slugs to use on groundhogs in general and for chest shots. While a lot of air rifle calibers can take out larger critters with head shots the 30 lets you go for a chest shot. My 30 cal shooting the Varmint Knockers at 880 fps while maybe not as fast as some shoot still fly true with excellent accuracy. Short video here to watch but it seems to only show in 480p for me so the clarity is not the best. Bill
https://www.youtube.com/watch?v=iu2tnnfpiK4&ab_channel=GunPowder%26AirPower
https://www.youtube.com/watch?v=iu2tnnfpiK4&ab_channel=GunPowder%26AirPower