Not tried the "spiked hollows" so can't comment, when I used .177 I found Powerpell were usually the most accurate.
Tips for .177 ratting if you must use it, either turn the power down or keep the range to over 25yds to minimize through shots.
Or as i do for work, use barracuda hunter extremes. I use these exclusively through my ultra se night guns and they are so humane . No runners, just helicopter tails.
Last edited by Mole trapper; 20-03-2018 at 08:47 PM.