Federal 10 gauge base wads

[OH Osthaus]

much of what I read refers to the spun paper base wad in Federal hull as a factor in the lower pressures achieved as compared to Remington hulls.

However for the new primed Federal 10 gauge hulls I can find (both on back order) --->

Ballistic Products' description says "This hull has the traditional spun paper base wad "

http://www.ballisticproducts.com/Fed...tinfo/0621035/

Midway's spec say "These hulls are deep based with a plastic disk base wad."

http://www.midwayusa.com/product/536...rown-bag-of-50

does any one know is this a change in the production going forward, or have both been around and they need to be checked?