Need loading info for 139/140 gr. bullets. Using Win brass and either Hornady or Partitions. Rifle is pre=64 mod 70 w/26" Shilen #3 contour. Have been using 62.5 gr H4831. Shoots about 1" @ 100yds. Anyone with a 7mmGibbs I'd appreciate any suggestions/loads available you'd care to share....Thanks