I just purchased 6 months ago a Gamo .177 1250 pellet air rifle I cannot get it zero at all. I’m 62 years old and I know how to shoot but this rifle has gotten me thinking I don’t know &^^&. Grouping on a consistent basis is not happening. I just mainly want to fire accurate in my yard squirrels rabbits and targeting. I have been using Daisy .177 pellets pointed and I have gone through one and a half cans 300 shots approximately so took off the scope and mounted a more expensive Simmons scope on and still no good results. I had my son in-law to fire it and he is a hunter and he couldn’t get it true. I looked at a post where Chiro9726 wrote he had the same issue back in 2/14/13. So I was thinking just use it without a scope but there is no site on the barrel what in the world am I going to do? Please help !