acpie360 Posted February 1, 2014 Share Posted February 1, 2014 I did chrono on my 45acp reloads yesterday and I noticed when the gun is clean, the first 5 - 10 shot averages may not make the 165PF. Load data: Missouri Bullet 230gr LRN, Hodgdon HP-38 4.6gr, COL 1.25" 1st 5-shot string: Lo = 692, Hi = 713, Av = 705 2nd 5-shot string: Lo = 698, Hi = 724, Av = 710 3rd 5-shot string: Lo = 725, Hi = 761, Av = 746 All subsequent tests stabilized at Av = 746 and all Lo's were above 718-fps. So, shall I up my powder to make sure the first 10ish shots are over 718-fps (165PF)? I have never been to any big match so I don't know how the chrono test is conducted. Would a chrono stage happen to be the first stage on a big match? Do they look the average or the lowest muzzle velocity? Thanks. Quote Link to comment Share on other sites More sharing options...
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.