Hey Champ- I have used Longshot, Unique, 20/28 and 7625 which I have a stash of. Longshot is dirty but does a nice job. Unique is probably your best bet. I should add that I'm loading 3/4oz behind 15.5gr Unique or 20/28, DR16 wad in the black Rem hull. Using 22gr. Longshot or 7625 in Fed, Fiocchi or Win SuperX hulls. Loading the 16 is a pain just trying to find components. I find the 3/4oz loads are a pussycat to shoot but will do the job if you do yours.
Never tried ExtraLite but have seen some use of it in the 16.
BTW- all the loads I listed are at or close to 1200fps @ 9000psi or less. They were adapted from 7/8oz tested loads. Use at your own risk. All loads in a 2 3/4" hull.
BTW2- Nice shooting at Bachelder's
