Follow the instructions to my last post. Start over again -- by yourself -- withtwo new bullets in different grain sizes... maybe a 240 Cheapshot & 300 grain XTP-- don't have any oils or lubes in the bore -- swab after every 2nd shot -- either change the powder if necessary or first try 70 & 90 grains before going back to 80. Your magic volume could be 95 or 100... maybe even 85 or 75.

Let us know how you make out.