I've got a 280AI and just built a 6.5x280AI, which is just a 280AI case necked down to 6.5mm. I'm trying to find the best load for the 6.5 and was wondering if I could use the same powders and charge weight for similar weight bullets. Like a Berger 6.5mm 140 vs 7mm Berger 140? I really want to try the new 156gr EOL in the 6.5x280. The 6.5x280 pushes Berger 140 3150-3200fps. So the 156 should be over 3000