I agree that the 7mm-08 is similar in performance to the 7x57 but if you run it up to true, i.e. CIP pressures, you tend to have pressure-related issues, some of these being case-dependent. During the 14 years that I ran a club range complex, the centrefire chamberings most commonly related to extraction problems were, in descending order; .223 Remington, .243 Winchester, 7mm-08 Remington and .308 Winchester. This was due to a combination of excessively straight cases and overly enthusiastic load development. The 7mm-08 does work very well, if: (a) you are sensible about your load development targets; (b) you buy a rifle with guaranteed feeding reliability for .308 Winchester type cases, such as Sako, Steyr Mannlicher, etc; OR (c) you purchase a rifle that can be timed (tuned for reliable feed) and engage a genuine gunsmith to perform that task.