You did well!
The 870 is one of the most durable shotguns in the industry and is also very versatile. If you want a different length barrel or choke in the future new and used barrels are very accessible. I have an 870 also and have three barrels for it. 30" Full 26" Improved and Rifle Sight Barrel for deer. As we said you did very well. And it is a terrific home defense weapon with multiple selection of ammunition. Something about when a dirt bag hears the "RACK" of the Pump Gun!!!!!