Daryl, and others.

What are typical signs of pressure in shotguns ?
Will you get primer flattening ?
And sticky extraction, like metallic reloading ?

Thanks
Nitro

PS: Slug plus wad = 495 garins ~ 1 1/8 oz.
I have load data from BPI for PB, Unique, Longshot, SR7625 and blue dot
I will compare there 1 1/8 field loads for those powders and see the relationship
Should be able to substitute 4756 and 800X at same ratio.