Sorry for late reply, I've been away. My gun doesn't have any numbers of the type mentioned. I purchased the gun as new about 4 years ago. That is the closest I can come to aging it.
Jim
Don't matter. Try the Yo-dave for a great trigger and try some quality ammo. If it still won't group well,check scope and mounts. If it is the gun,sell it and try another 452. It's not the platform that's bad.
