I've only used two loads in my 28, a Fiocchi #8 3/4oz at 1150, and a similar Fiocchi 7 1/2 load at 1300.
The 1300 load gets your attention. The gun is 5 lbs, 12ozs or so. Sharp recoil.
I'm not going out looking for 1 oz loads.

Best,
Ted