Tom,
The Brennekes are some very good slugs, but I only have experience with the 12 ga ones. Are you talking about the MP slug or which one? My sons 870 loves the old MP's but I think the Rottweil Brennekes have been discontinued. You can occasionally find them. The Brenneke USA slugs did not fare as well in his gun.
They sure cut a nice hole in the whitetails though with the harder lead and sharp fins up front. Beats the Rems, Feds, and Wins Fosters all the way around in our experience. I am getting a 20ga Tracker II barrel and plan to shoot some Brennekes through it if I can find them.
What ones are you shooting? <1.5" at 50 is great for treestand hunting or still hunting.
