I have seen it stated that 96:1 ratio was established using black powder. it was said that when using dense smokeless which weighs less than black the ratio could be 90:1. This would still give a weight of 5lb 10oz for an ounce, 6lb 5oz for 1 1/8oz & 7lb for 1oz. I can fire loads in this range with no problem as long as the velocity stays down around 1200 fps. A 1oz load dropped to around 1100 fps would likely be a reasonable max on that 5.5lb gun & this should be no problem loading while staying within that 2 3/4 ton pressure (approx 8Kpsi).
