To the OP; If you feel the least bit unsure,,, or uncomfortable,,, send the gun back to Ruger for a safety check. It will give YOU peace of mind.
k22fan,,,, he was using factory ammo,,, not reloads. And yes,,, squibs happen to many reloaders. But, I've loaded tens of thousands on my blue progressives,,, and never had a squib. On my 650,, I have powder check dies, and I've never had the alarm buzzer sound off. It comes down to how you use the equipment that makes the differences.
One thing I do not do is leave powder in my hopper after a loading session. The powder hopper is not a proper way to store powder until use. It is returned to it's proper jug after a loading session. As such, it has no chance of absorbing any airborne moisture or whatever which might cause a little clumping & such.