A choke questions for the experts....I have a 10 ga. Baker SxS (Damascus)that was/is factory choked FULL & FULL.

If I use Gauge-Mate steel sleeves to shoot 12 gauge 2-3/4" low-pressure handloads through it, what would be the likely choke patterns? Would they be similar to CYLINDER, since the 12 gauge shells have a 12 gauge wad, which is far undersize for the 10 gauge bore? Or will the patterns be more like the "FULL CHOKE" of the original bores?

Eventually I will go through the laborious task of pattern-testing and pellet-counting. But I wondering what to expect...

JERRY