TN Red,
I've been using the 20 gauge Remington Copper Solid saboted slugs in my Scoped Tracker II for a couple of years now. I tested a bunch of slugs when I first got my gun set up, and the Remington Copper was the most accurate of the group (Winchester BRI and Supreme, Lightfield and the Remington).
The first year I used this set up, I shot a spike buck and wasn't able to find him (he led me on a 2 mile chase before the blood trail dried up). After some investigation, I believe I shot too low in the chest from too steep of an angle and the slug didn't have a chance to penetrate to the vitals, instead it opened up a fairly large flesh wound.
I had doubts about the performance of the slug, but went ahead and used them again this year. The results were as different as night and day.
This year's deer (a button buck)was shot at approximatly 60-65 yards, deer was mostly broadside, slightly angling away. I hit it about 1/3 of the way down the chest, right behind the shoulder. The deer dropped in it's tracks and never moved again.
Here's a picture of the deer and gun rig.
http://www.graybeardoutdoors.com/phpbb2/album_pic.php?pic_id=390It wasn't a monster buck, but it made some mighty pretty white packages in the freezer. :grin: