I've spent quite a bit of time reading through Pet Loads and it's a good source of information, although I find his loadings to be a bit on the conservative side. (understandable)
My main complaint is that he uses lever action 30-30's with 24" barrels and even bolt action 30-30's for much of his data.
The vast majority of 30-30 ammo is fired through lever action carbines with 20" barrels and the velocity data for the bolt rifles and 24" lever actions doesn't translate to the 20" barrels very well.
