Gualandi/B&P wads were designed for the straight wall cases in all gauges offered, Cheddite Fiocchi Federal etc...
Winchester AA wads and I think most or all Remington target wads were designed with tapered case/base wads in mind and have smaller gas seal diameters.
Winchester and Remington field load wads are likely to be designed for straight wall hulls though?
Find data that has a wad designed for a tapered wall hull used in a straight case it will be lower in pressure than "usual" but should be used with a bulky powder to reduce powder migration, as noted above.
Find data that has a wad designed for straight wall hull in a tapered case..it will be running higher psi than "usual" and most data will spec a slower powder...or less grains than above.
All good to know if you are have a load challenge you are trying to figure out:)
Best,
Mark
