Does anyone have pressure data on the 1 oz & 1 1/8 oz Fiocchi spreaders?
I've not been able to find it published & I seem to remember reading somewhere that all Fiocchi USA ammo is SAAMI Spec which could be problematic for use in some guns.
My 20 yd testing with RST 12ga 1 oz 7 1/2 spreaders out of .008" choke indicates similar results with only about a 2" increase in effective pattern over the RST 7 1/2 Lite load but the spreaders are much less "center dense" so in my opinion still worth using (at least in that particular gun).
It would be nice to have a spreader that opened more than the RST & less rapidly than the Poly Wad in I.C chokes & @ appropriate pressures.
Looks like handloads with the polywad disk & shot on top of the disk is going to be the best way to achieve that from the info supplied on this thread.
