Clark and BC Rider, I do thank you for the information, I do have access to 303British, I'll have to try some of those when my dies arrive. BTW Clark I've been reloading for over 40 years, in fact I was looking at the 49th Edition of the Lyman Reloading manual, and they stated basically what you stated in regards to the pressures that the Ruger's can take. I believe the Krag/Jorgenson, would only allow 40,000 due to there carbon steel receiver, however the Ruger's will at least allow 50,000. Note I do have some .308 cast bullets that weigh in at 173 grains with a gas check I plan on loading some of those up here as soon as I get my dies, as I did get 22 30-40 Krag Winchester primed casings.
Incidentally, BC Rider, that lady at the gun show was selling her late husbands rifles and I doubt she was in any hurry to get rid of them. Her husband was a Vietnam Vet as well as me, so I could relate to her, he recently died at the early age of 72. So the decent price, I still don't understand why she was asking so much for the other No.3 she had there, other than the stock was a lot prettier than mine, but obviously used. Any way I thank the both of you for the valuable information.