Sarg, agree. What i also should have added is: I believe Jack O'Connor sold the 270 short by using the 130 grain bullet weight. I find the 140 to be more emphatic and only slightly slower then the 130. The 140 also holds velocity and trajectory better than the 130 for longer shots.

Re the 8mm's. Woodleigh make a 196 grain bullet for the 8x57 and 8x64 they make a 200 grain bullet for the 325WSM, 8X68s type velocities. Use the 196 grain in a big 8 and the performance will be wounding rather than fatal I feel. Their 220 goes well in the 8X68s.

Nitrox, Namibia do not have a min cal but a min Muzzle energy.