I bought this gun because of all the great reviews. It has locked up ( i guess out of time) 3 times on me. At 100 yds with a nikon 3x9x40 scope i am lucky to get them in a paper plate. That is in a lead sled too. I am not a great shot but with remington vtr and same scope I can tear holes. I realize it is not going to be as accurate as a bolt but I was expecting alot better grouping than this. Any thoughts?