from what you tell us it sounds like the bullet is seated so that it needs to be forced against the lands (the rifling)
Ideally you want it close to the lands, but not touching them. having the bullets sit hard against them will raise pressures which can be dangerous.
Another thing you must check is that you clean the primer pocket and the primer is seated so that it is flush with the case head or slightly recessed in the pocket.
I think in this case it is likely that your bullets are seated too long and you need to reduce the COL.