Both the Bob and 3000 are "interesting" cartridges and fun to fool with BUT if you are setting out today to build/buy a NEW rifle, they hold no magic.
Newer cartridges like the 6mm/6.5 Creedmore, with tighter SAMMI specs can exceed the performance of these older 25s.
Bullet selection and case quality is also far better in 6/6.5 mm.
While I love my 99 and 722, I would never duplicate those chamberings if building/buying new.
