I had to resight my gun this year I switched from the Winchester partion gold to the Hornady SST's, I put about 20 12ga rounds threw sighting an having fun and 3 more one for each deer, all with no problems. Put about 15 rounds threw my 20ga sighting it in also with no problems. I did find these shoot higher then the winchester's. And out of my shotguns I had the best groups so far out of all the ammo I tried.