John will tell you the .275 Rigby was actually intended for lighter bullets, say 140 to 150 as it was supposed to be used for Red deer and the like. The 7x57 was the heavy bullet gun ( and I prefer the 175s myself)
However, all that said, I bought a Ruger African in .275 Rigby. John told me to shoot the lighter bullets in it. I didnt listen, and it hated the 175s. Stepped down to 150 gr. NBTs and magic happened!
If I get to know him for another 25 years, maybe I'll listen to him...maybe
