I think John is correct. I have long been suspect of velocities reported on this site and others, always figured pressures were pretty high on those loads.
I'm still quite skeptical about much of the R17 info making the rounds in popular information circles. It seems to me that people were quite amazed and thrilled with the magic this powder had when it first came out. And there really was a dearth of tested data so we didn't know what we had. Of course, having a limited and difficult to access supply of many powders in the same burn range didn't help. R17 was there for us even lacking data, and, being hand loaders, we burned it.
