That charts about useless. I would shoot for well above 2k if you want decent expansion.
Based on what exactly?
I can’t answer for BWalker but my opinion is based on extensive, and I do mean extensive, experience with bullets other than Barnes.
P
Aren’t we concerned about extensive experience WITH Barnes bullets?
joke
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noun
noun: joke; plural noun: jokes
a thing that someone says to cause amusement or laughter, especially a story with a funny punchline.