.44 will do nicely
my own view is forget the wads and go for an inert filler, semolina or couscous works well.
Brave man to have chose 777 from the start. Go for aloxing your balls and no other lube is needed. far far cleaner. quick wash with water and a spray of wd40 so much easier.
“If a cricketer, for instance, suddenly decided to go into a school and batter a lot of people to death with a cricket bat, which he could do very easily, I mean, are you going to ban cricket bats?” :- Prince Philip said after Dunblane