Due to what seems to be an increasing interest in smooth bores (here on the forum), I'd like to (once again) bring attention to Skychief's technique for loading shot loads in
cylinder bores for tighter patterns at extended ranges.
This Skychief's special load for a 20 ga.
cylinder bore is,....
60 grains 2F,.... followed by one
1/8" hard card,.... followed by
1 ounce of shot,.... followed by an
overshot card,.... and topped off with a
1/2" cushion wad that's been soaked in olive oil.
Yep,.... you read that right
,.... all the load components are
TOPPED OFF with a 1/2" fiber cushion wad that's soaked with olive oil.
I've personally played around with this load, and it
IS an improvement over (what's been considered the standard way of placing) the cushion wad
between the card wad and the shot charge for decades.
So if you'd like to tighten up your shot patterns PLUS gain a few yards,.... you might give Skychief's technique a try.