I also have a glenfield 30A in 30-30. I have a Simmons 1.5 to 5 X scope on it. It groups within 3 inches at a hundred yards. I think it's the trigger as it doesn't have a very crisp break (I don't think it's me because I can consistantly print under a half inch groups at that distance with some of my bolt actions). I also wanted to ask if there Is a web site that I could go to to check the serial number of my Glenfield for date of manufacture?