I have used the Hornady slugs quite a bit. I've had excellent success with them on deer out to 175 yards. You definitely need a rifled barrel to shoot these slugs. Like all ammunition, some guns perform better than others with certain loads. Good luck testing.
I was shooting the hornadys through a Browning A-bolt 12 gauge. Browning no longer makes the gun but I had the barrel ported last year and it shot the hornadys quite well. I tried shooting those same slugs through my Tar Hunt 12 gauge and they didn't shoot worth a darn. I was shooting groups as small as 1.5" at 100 yards and and about 3 inches at 150 yards.
One of the most important pieces of equipment that you will take hunting is a good quality pair of optics and they take some care to give you the performance that you want. So here are a few tips.
Use some alcohol and cheese cloth to clean the lenses. I will usually pick up an extra cleaning kit from my optician when I have my eyes examined.
Don't touch the lens with your fingers. If there is a stick or a bug on them blow it off.
Use the lens covers. They are there...