I don’t have a ton of rounds thru my Sport 2 and some were using 10 round mags but I don’t recall having any issues with a full 30-ct mag. That said I load in the bolt back position which may or may not help load the full mag.
OP, are you loading the full mag with bolt back or is it in battery? I can say I had issues with a Shield that for me (bad hands) needed the slide open to accept the full mag. So perhaps the bolt plays a part on your concern. Just a thought.