I have a Bushnell 4200 3x9 on my model 70 338,have used it for several years with no problems.
I run an Elite 4200 2.5-10x40 with Fire fly reticle on one and a Burris FFII 3-9x40 with ballistic plex reticle on the other (Pre 64 model 70 "Alaskan"). Here's how she shoots with that glass:
I've never had a problem with these Burris FFII's or the Elite 4200 series scopes either. Good scopes for the money...