You should do fine with that XTP. I use them for hunting in my Ruger Blackhawk Hunter in 44 Cal, 240 grn. I have taken several deer in KS that was around the 130-150b range during their 15 day any weapon season in Jan on unused doe tags. I shoot it in my Encore black powder pistol also with 70 grn of loose 777. Very accurate. I have never shot anything past 90 yards with the black powder pistol but at the range it shoots good groups out to 150 yds.
Load em up and go hunt. I use blemished XTP's nd regular. All shoot the same.
Mike