Now I Know you shouldn't shoot copper than lead but can you shoot lead and then copper? Is this what they call hot lapping is it not good for your gun? I just recieved eight boxes of ammo to test through my 1911 45acp.Some are full metal jacket some hollow point some semi wad cutter or flat nose, most are copper but I also ordered lead and I want to know if I can shoot all of this without cleaning the bore.Or what?