02-02-2022, 04:04 PM
Dr,
As I said, your bullet will hit lands/grooves in the tapered section, at the same time. The lands/grooves are in the tapered sections.
None of this discussion is going to make any difference to group size however. If you shoot an AR you are stuck with whatever jump-to-lands you get. If you shoot a bolt gun then use the Hornady gauge to find out where it touches and back off up to 0.020".
[ATTACH=CONFIG]18626[/ATTACH]
What sort of gun do you have?
Bear also in mind that over time erosion will smooth the lands in the throat.
As I said, your bullet will hit lands/grooves in the tapered section, at the same time. The lands/grooves are in the tapered sections.
None of this discussion is going to make any difference to group size however. If you shoot an AR you are stuck with whatever jump-to-lands you get. If you shoot a bolt gun then use the Hornady gauge to find out where it touches and back off up to 0.020".
[ATTACH=CONFIG]18626[/ATTACH]
What sort of gun do you have?
Bear also in mind that over time erosion will smooth the lands in the throat.