So i made some really nice bullets for a 454 casull but my hardness readings seem all over the place. I test the same bullet a couple Different times and get different results 15-19. Then i tried heat treating them at about 475 for 2 hours then plunged in cold water. Now 18 hrs later my BHN is 15? one five thats the same as my 45lc’s from clip on wheel weights not heat treated. I must be doing something wrong but i cant figure out what.