Let me just say this about reloading. Yes it is much cheaper if you reload......just don't use it for self defense if you have the option of using commercially manufactured ammo. Just imagine getting to court and the defense attorney presenting you as the "psycopathic survivalist" who just could use 'ordinary' ammo but had to go out and manufacture his own 'super deadly ammo'.
LE has in its numerous databases all the ballistic info they need to confirm your story about how far you were when you fired and where you fired from. Just like highway patrol can determine your speed from the skid marks...so can the forensic team determine if you were telling the truth. Use handloaded ammo and all bets will be off......Practice with it. By all means. Load a bunch to the same load as your commercial load.....you'll get the same feel. Just leave the reloads for the range.....