I have some, and have not used it yet, but it was designed for the Short Mags. People are using it with great success in the .308 using very heavy bullets for long range target shooting. The results have been that people are getting higher velocities, but accuracy has suffered in some of their RL17 loads with the higher velocities. I haven't seen anyone using it with the .270, or 30-06, but someone has done it I'm sure. Do a google search, and then verify it from other sources, as I have seen people make mistakes through typing with fat thumbs. I look forward to trying it myself in a number of calibers.
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