The early ones had some pressure problems but yours should be ok. I think the problem will clear up with a little more shooting and be sure to clean the cylinder well. Be sure the chamber has no excess oil as this can cause sticking brass. A friend of mine shoots one a lot and has taken a Grizzly Bear with it. He has had no problems but if it persists, by all means, return it to Ruger. I am sure they will make it right. One of those is on my Xmas list.. I hope Santa reads this.