Normie, I have a 260AI and shoot 140gn VLD and Amax exclusively. While the AI version of the 260 is a little different (bigger capacity) i can share my experiences in summary:
2208 - too much pressure before speed with 140gn pills
2209 - better than 2208 and you should achieve 2800fps easy enough. Be aware you will be at the top end of pressure and there will be a fine line between acceptable and not
RL17 - I was unable to maintain consistent accuracy with the little bit of trying that i did so discontinued this
2217 - I followed Kiwi Gregs lead on this and even made a drop tube to help compress loads. I was unable to get sufficient powder in the case to give velocitiy required ( I am targetting 2950fps with low ES)
2213sc - highly accurate repeatable load (low ES), can't comment on capacity and speed relative to the std 260 case but worth a try
N560 - simply put - the best. Low pressure, good velocity (I use 50.1gn for 2960fps with VLD's and 50.6 for 3020fps if I really want to be ambitious). ES is great, case life is great and I haven't noticed any difficulty on the chargemaster
If you need any other info please message me
cheers
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