The first round I made tonight is way too short. I didn't back the seating die's setting out far enough before making the first round and I seated it about 2/10" too deep. My first reaction is to toss it into my pile of screwups, but I'm curious... what are the consequences of seating a bullet too deeply? Failure to feed would seem obvious, but what about pressure? Can a bullet seated too deeply cause an overpressure problem? In this case, I'm loading 208gn poly tipped bullets with 7.3gn of H110 in an attempt to go subsonic with my 300BLK loads. I got this recipe from my Hornady manual. I'm thinking about tossing that round in the mag and firing it off. With 7.3gn of powder, I'm thinking that pressure wouldn't be an issue. Thoughts? Comments? Predictions? Wanna kill these ads? We can help!