I have a 6BR sporter with a 14" twist Pac-Nor Barrel and I was wondering if anyone had tried this cartridge with the 58 gr. V-Max on Groundhogs and/or Coyotes....Is the 65 gr. V-Max better>>??? What kind of velocity is reasonable to expect with a 22" barrel with these bullet weights.. What powder would be best for this bullet weight range??????I'm getting ready to do some testing and would appreciate any suggestions.... Thanks ..George