Should think you would be good to go?
Might want to invest in extended/steel safe chokes for the tubed gun....flush mount would be fine, extended would be best though.
Also, might want to check the actual constriction on "MOD" barrel before letting loose with the hard stuff though, unless the barrel is very thick at the beginning of the choke section I don't know that I would take a chance with more than about .015" constriction.
Folks shoot some older full choke 12 and 10ga guns with steel and see no damage....not sure how well that would translate to a smaller bore when you consider the seemingly increased risk of shot bridging?
That all being said.....you prolly would just use target loads of #7 on snipe anyway, correct?
If that is the case I would not have any concerns.
Best,
Mark