Break In A Leather Holster
Your holster has been handmade to fit your gun, and thus will be a very snug fit at first. Our holsters are like baseball gloves- you need to break them in before playing in the World Series. It may be stiff and tight, but don’t worry, that is how they are intended to fit.
You can break your holster in gradually by putting your UNLOADED gun into a thick sock, then by inserting the gun/sock into the holster. Let it sit for 24 hours and the leather will start to stretch. If after 24 hours the holster is still too tight, add a 2nd pair of socks, and let it sit for 48 hours. The added layers will expand the leather enough for your desired retention.