10 yards rested you should be able to hit a rats head if the rifle is zero'd properly.

Re-zero the rifle at 10 yards.

A lot of people think shooting close is easier. Is it ****** because the pellet is rising at a relatively steep angle and a slight change in range will make a massive difference, especially if you are zeroed at 10 yards. Zero from the bedroom on the gap.

Let a couple go and see what they do. If you bait by the hole they may stop but they do tend to poke their head out, back in, then bolt so you may not be able to leave them.

2nd problem is over-penetration. If you are determined to do body shots a hollow pellet or a wadcutter will be better at 10 yards.