Also a word on powders, we strongly recommend using either Ramshot Competition or Vit 320 powder with our product. 4.4-4.6gr of either, under our 180gr 40cal bullet should give about 169 PF, with great results. We don't recommend Titegroup, I know it is popular, but our experience has been, it's fast burn rate causes more smoke, and some leading. Not only with our product, but with other polymer bullets as well. It also has given us huge standard deviations in velocity and poor accuracy. Ramshot Competition is priced on par with Titegroup and is my personal favorite. I've shot Vit 320 for years but am totally sold on Ramshot powders. DVC Tom