these are hollow base.

I just sent off my order for 20 bullshop bullets today so i'll have more testing in a couple weeks. Plan on doing a lot of shooting with my .45 tomorrow so i figured i'd give triple 7 a try and see how it does. Only have 3 great plains bullets for the x-150, all the stores were out of them again. So those 3 shots will be the big test tomorrow.