Coming back to this, not sure which ones he's using but I'm using Fed 210 match large. One thing I noticed this morn when looking back at my data is when I did my test, 50g at 2.825" COAL. Which will fit mags with no issue. The book shows a COAL of 2.735". At 2.825" my jump is .055", at 2.735" it would be .145" which seems like a lot. Here is what I shot, I picked 50 due to cold bore then the 2 follow ups were damn near in same hole. What do you guys think?

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