Dave: I have 3 simmons and they are work excellent
1.5x5 x20MM whitetail classic
3x9x40MM pro hunter
2.5x10x40MM whitetail classic

I am also interest in how well this Montana X-Treme bore conditioner works. I used it the other night and even after shooting nine conicals, the rifle cleaned with just a few patches. The breech threads took longer then the barrel. So I gave it another treatment.

Also I treated my Genesis and my Wolverine. So it will be interesting to see if it makes a difference in them. The Genesis cleaned real easy today.