I have been a long time site lurker, now a first time poster. Slowly the addiction of long range hunting has taken hold so now I have a question for the experts. I spent some time the first part of last year doing some novice accurizing to a Ruger m77 mark II 300 win mag which now with the right load will shoot .3 moa. In the last couple years I have also had scope problems (two different rifles) in the field, luckily it was not effect my hunt. Optimally I would have a timber rifle and a long range rifle, but am not quite there yet budget wise. The vibrations of the barrel correlated to it liking a certain load make sense to me so I have to ask: If I decide to add iron sights to my barrel, will I have to redo all of my load development?