I plan to load some .308 Sabots with .224 copper jacketed bullets soon. When I reload normal brass and bullets for my Springfield I always attempt to keep the bullet speed at or about 2700 Ft/Sec. and the resulting receiver pressure below 52,000 Lbs/Sq.In. because of the age of the rifle and my understanding of the upper limit of this receiver's strength. However, everything I read about shooting Sabots implies that I certainly may achieve higher bullet speeds and perhaps greater receiver pressure. Has anyone else ever dealt-with this dilemma and/or successfully fired .308 Sabots from a 1903 Springfield manufactured at Springfield Armory in 1919?