It is also noted that for "Driven" birds Burrrard recommended both bbls bored the same. He more or less "Conceded" that different chokes might have a use in "Rough" shooting.
His recommended choke was the choke. He went to great lengths to show that the allowable "Error of Aim" of this mild choke was only an inch or so different than the Cyl bore & to show how it resulted in much better uniformity of pattern, elinating most of the inherrant faults of the cyl. This choke with the standard British load of 1 1/16oz #7 he felt was usable on all species of birds shot on Driven shoots out to 40yds.
It is equally noted that at the time of Burrard's writing the normal shell was put up with card & felt wadding & closed with a top wad & roll crimp. ""IF"" it can be showed that the modern shell has elimated all the problems associated with the cyl bore & that it will pattern essentially like the older shells with a "Mild" choke then it would give equal performance, which is very good indeed.
