No feed issues with my M/70, suspect the same to be true with the Springfield. I have not had any issues with brass life nor needed to neck turn my .35 Whelen. I have used both Remington factory Whelen brass and have formed WW .30-06 brass into .35 Whelen, no issues of any kind with either. I have been shooting my Whelen for more than 25 yrs. now.
