Federal 7/8 loads?

[Gary]

i understand that Paul.. so do you think the 7/8 loads are ok? the recoil is not bad and you can hit the birds, not like the 980's that winchester sells that are pretty slow.. the 980's pressures are around 6000.. (ok for skeet but thats about it i think).
I understand about loading your own now.. and thats a major reason, that and the cost of buying the specialty shells like RST's (even though i like them and they work well) It just gets too expensive if you shoot a lot and i do..

[Bill Murphy]

Paul, how do you explain the fact that loads with the identical weight of the three components you mention and identical velocity have widely different advertised pressures in loading manuals? By the way, Gary, the new Federal 7/8 ounce Top Guns are the best thing brought out by the big three since smokeless powder shells.

[Double Lab]

Try the Fiocchi trainer 7/8oz. trainer loads. Even softer than the Federals.

[Snap Cap]

Bill, I have noticed that the same hulls loaded with the same weight of shot, same powder and weight of powder charge vary considerably in pressure depending on the wad used. Even wads of the same weight cause greatly different pressure results. Perhaps some of the factors explaining this would be differing efficiency of the gas seal and blow by, different "slickness" and drag coefficients and surface area of contact between the wad and barrel wall, to name a few.

[Snap Cap]

I also neglected to mention the amount of wad compression pressure and crimp also cause quite a bit of variation.