Another old idea, from the country areas of the UK, was that Chewing the shot before loading your smoothbore gave better patterns at long range.
(When you've tried it let me know! )
I can see Some logic to this;
Maybe wet shot slides up the barrel better, but damaged shot spreads wider.
Maybe the chewed grains stuck together for so long, in which case it Might appear to work at times!
Still, it's summat I never tried!
Re. some folks commenting on how slow a flintlock fires;
I have sometimes offered these folks the opportunity to try it;
"You stick your hand over the muzzle and I'll fire it. See if you can get your hand out the way before it goes off".