On the hard recoiling calibers, as you have found out you never put the fingers of the off hand under the trigger guard spur. You put the first two fingers of the support hand on the outside of the spur or you get Contender Knuckle. Mine is magna ported and raises more than with a brake,and they do come back hard. I limit the number of shots at a setting with any hard recoiling gun as fatigue sets in quickly and bad habits follow. Shoot a group lay it down shoot something lighter then come back. I shoot 180 gr Speer in mine and they work well.