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March 5, 2019 01:17:18
Got this in today. One for a .25 and one for a .30. It was a quick switch out and my son didn't do a very extensive before and after test. From what he said the chrony indicated speed didn't change much but the spread was tighter. I'm going to do mine as a .30. Comparison problem is I'll be going from a 600 mm smooth twist to a 700 mm X barrel so it won't be apples to apples. He was using a 700 mm X barrel for both combinations.
The barrel end is replaced with a double hole set up.
This is the stock .30 probe,
Double hole probe.
I'll update this as soon as I get to play with it some.
