this little book written by sir henry halford in 1888 bulges with information on shooting black powder rifles, out of proportion to its size.
well worth its purchase price from amazon.
halford worked with william metford from the muzzle loading era through to the days of the 303, 2 of the leading lights of rifle shooting development in the era.
the book is a distilled essence of all halford knew up until 1888.
keep safe,
bruce.