I use the same loads Dean does 20/28 in AA Hulls. Lighter charges for my Grandson heavier for me.
Having said that also load 3/4 oz & Green Dot in Gun Club Hulls for a 20 G Beretta 391 Sporting. Different hulls keep the auto loaders shells separated . Lot more pressure with Green Dot. Gas operated auto needs pressure two Parker Trojans don’t.
All considered it’s hard to beat 20/28 in the 20G
William
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