I think folks here often say low pressure ( which relates to barrel hoop stress) when they mean low recoil ( which relates to the pounding the gun and your shoulder take). A low pressure load slows the powder burn and ignition rate so the hoop stress is spread over more distance of the barrel. TPS has the barrel pressure service and proof load pressures.
Low recoil means less whack on the gun and you. The recoil formula considers only the weight and velocity of what comes out the barrel end. You want less recoil, you select less shot or less speed. Perceived recoil takes the weight and configuration of the gun into effect. Heavy gun, straighter stock, recoil pad, make the gun kick less. The Parker catalog tables show what Parker recommended for loads and gun weight.
I'm no shotgun ballistics expert but I've read a bit and shot a bit and if I can grasp the essentials anyone can. It ain't rocket science.
Now Calvin, this isn't my first rodeo, and I know the horse has to get you there and keep you there for you to have a chance at the steer. I guess if maybe one shotshell load would do everything there would be no need for all the various loads the ammunition companies make. Maybe they have been mistaken for the last 100 years?
A curious observation: lots of gun guys are adamant about their personal freedoms, freedom of speech, gun rights, etc. They don't want anybody telling them what to do. Yet when somebody asks what they CAN shoot, they answer with what they SHOULD shoot. They seem to want to tell folks their personal preferences rather than what the manufacturer said, as if the manufacturer was wrong and they know better. And woe be to the fellow who disagrees with their personal preferences, because they are wrong , wrong, wrong, or stupid and should be banned from owning a Parker. Or they seem to want to assume the guy has a beat up cracked up thinned barrel gun when they don't even ask. Just seems to me, and I'm no expert at all, that maybe the guy deserves a complete answer?
Bruce (usually shoots low recoil loads but sometimes full loads) Day
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