I just bought a CZ 452 Ultra Lux and looking for a nice solid round to shoot. I have been testing different stuff to see what shoots best and so far so good with surprisingly Remington Golden Bullets. Now I am talking with coworkers and some are saying shoot lead and some are say shoot copper coated stuff. Which is best for my rifle? I also have a Kidd barrel on my 10/22 and want to know the same for that.