I have a 4" 610 that suffers from terrible accuracy with all manner of factory ammunition. I'm looking to work up an accurate plinking load, using Missouri Bullet Company's lead 180gr TCFPs and HP-38. The problem is I can not find any published load data for lead on Hodgdon's website and I do not want to blow up the gun. Does anyone have recommendations on an accurate lead load? I'm looking for something which will be pleasant shooting and accurate.