I used this stapler to reupholster a chair and hammered about 150 3/8 inch staples into the plywood without a single misfire. Also, just to test, I took a few shots of 3/8 staples into a piece of solid oak and they fit perfectly. Who knows how the stapler will hold up over time, but for this job I'm glad I bought this and not one of the more expensive staplers (which all seem to have too many spotty reviews).