One last thought and then I'll go quietly.
You can avoid double charges by choosing a load where the powder charge takes up more than half the case (a double charge will spill over the side of the case). Won't prevent squibs but if paying attention when shooting squibs should be easily noticed.
Must have in my mind is a KMS press light set - avail for 650/750 and 550 (have them on both of my 550s).
here's a link for the 65/750
UFO 650 Reloading Press Light for Dillon XL650 & XL750
– KMS2
Paul
You can avoid double charges by choosing a load where the powder charge takes up more than half the case (a double charge will spill over the side of the case). Won't prevent squibs but if paying attention when shooting squibs should be easily noticed.
Must have in my mind is a KMS press light set - avail for 650/750 and 550 (have them on both of my 550s).
here's a link for the 65/750
UFO 650 Reloading Press Light for Dillon XL650 & XL750
– KMS2
Paul