As suggested using data from 6.5x55 and 6.5-06 worked very well for me. I'm interested in the vintage loading data. Having Ken Waters data was important to me. As a personal choice, I'd any day rather neck down. I use 270 brass. It's all good. Slow powders rule. This undertaking has not been smooth. Had one scope breakdown plus problems getting the rifle finished out correctly. I'll be glad when a guru writes an article followed by the re-introduction of the cartridges and rifles chambered for it.
