I loved BE-86 and when I ran out I bought a pound of Sport Pistol from a local shop. I was really impressed and ordered 4 8lbs jugs. I'm down to about 10 lbs now, though I don't shoot much anymore due to the primer situation.
I use RCBS dies in my 650 and haven't had any troubles. I can feel the decapping pin plowing through the small hole, but it hasn't hurt anything. However, I did grind a fine point on the pin.
It doesn't work for fertilizer. It would take years for it to break down. I think the reason people say to sling it out in the yard is to spread it so there is less chance for it burning. Modern smokeless powder is pretty resilient. UV will have more of an effect on it than anything.
I switched from Titegroup to Sport Pistol. The Sport Pistol is cleaner and MUCH cooler. 100 rounds of Sport Pistol isn't nearly as hot as 50 rounds of Titegroup.
Mine just started doing this. I cleaned it really good and then hit it with some Armor All. I loaded about 600 after and it didn't give any problems.
It seems like the inside of the funnel gets scuffed from normal wear and the cases don't slide in as easy.