Just getting started on a friends Dillon 550. I got this receipe from Hodgdon's web site. It lists the COL at 1.169 starting at 4.9 gr with a max of 5.7. We are at 5.0 gr but the OAL is 1.148 - 1.155. BTW: my factory ammo is 1.148. Does this all sound good and safe? I plan to test it tonight. First in the G17 then full auto in a CA89K. My obvious concern is when I use the smg. Thanks!