I have a Remington 700 sps in 308 and it tends to group horizontal. I know the wind will do it but what about something static. Can the cheap factory stock flex horizontal? You change loads with different velocity and you get groups 7/8" wide and 1/4" vertical. Do you think barrel material could do this? I have a 24X leupold, have you heard of a scope getting loose and how would I tell. Thanks for your input.