I have an 8 oz. new bottle and 9 oz. (had 1 oz. extra from my first bottle). All bottles from this year and yes, they went from 10 oz. to 8 oz. My first bottle in the spring was 10 oz. I would trade or sell. Just PM me. I am getting rid of it because it does not work in my CVA wolf. Let me rephrase , it work 90% of the time. I have the proper plug called for but almost every first shot fails, no matter now much I clean, different primers, I'm done with it. The primer goes off and no ignition of the Blackhorn 209 but the primer has enough energy to send the powder charge and bullet out the end for the barrel without igniting the Blackhorn 209? How is that even possible? I have done everything in my power to get the plug ultra clean. including compressed air after detailed cleaning. I picked up a bottle of Triple777 FFFG and never had any misfires, same setup, same person cleaning the rifle and plug. I have make my choice of which power I am using for elk hunting in September 2022.