I'm trying to find a reloading recipe for my 16ga sxs. I'm shooting the vintager load from polywad which is a 2 1/4 dram, 7/8oz load which shoots really nice. I've bought the "The Sixteen Gauge Manual" from Ballistic Products to find a similar recipe but am having a hard time translating the 2 1/4 dram to either fps or psi. Any help is appreciated!