I have two 6mm Ackley's and it is a great round. However I would strongly recommend a long action for this cartridge to take advantage of its full potential. If I was building a 6mm on a short action I would go with either the 6mm Creedmore or the 6.5x47 necked down to 6mm. I have a 6x6.5x47 Lapua and it is extremely accurate.
