The RXP-20 wad is what you want Stan.

It works In the new or old style AA or the Remington hulls perfectly with an ounce.

Herco is my preferred, but there's a load published for the AA with 20/28 that could be shaved by a grain and a half and still have adequate pressure and likely be around the velocity you seek.

You have once again confirmed that many 'published' loads are impractical.

"The price of good shotgunnery is constant practice" - Fred Kimble