Yes, i shoot 12 ga some in 10 ga guns. One is chamber lined and the other I shoot. 10/12 gaugemates. Recovered wads show some slight flaring of the skirt, but not much. I shot the chamber lined S Grant in a tournament recently and it was great. My 1894 Remington Trap gun has .752 bores so, it was not unusual in 1898 to shoot over bores