Filler Question.

[enfield2band]

I don't use a filler in my repro revolver. I use 22 grains of fine blackpowder and it is accurate enough at 25 yards even though the ball is away from the rifling.
If I fill the chamber up with powder so the ball sits close to the rifling the accuracy is abysmal.

I don't know if a filler improves accuracy.I find that lower charges are better in most revolvers.

It may be that the ball has chance to stabilise at short range with the lower charge.

[Fronteria]

I dont use anything other than blackpowder to fill chambers in my Colt Walker just 55 grains of black powder a .44 wonder wad and a .457 ball.
In my flintlock .520 all steel Scottish pistol I use 40 grains of black powder a 10 thou lubricated patch and a .500 ball.
Most satifactory and enjoyable to use.
If you buy a replica at least use an original load in it.