Just say Moe,
When you see the lands NOT stopping at the same point it means the chamber, and the bore just past the neck (throat area) are NOT aligned... Or you had some really screwy chatter that started a LONG way back and wasn’t corrected (5R’s get that a lot)
I’ve seen many factory barrels like that with some lands (throat area) reaching back to nearly the neck, and on the opposite side of the barrel they stop much further down the bore.
If you use the Gritters method (and do it well) which aligns to the bore as it leaves the neck, you get a really nice symmetric set of land cuts that all stop in the same place.
When you see the lands NOT stopping at the same point it means the chamber, and the bore just past the neck (throat area) are NOT aligned... Or you had some really screwy chatter that started a LONG way back and wasn’t corrected (5R’s get that a lot)
I’ve seen many factory barrels like that with some lands (throat area) reaching back to nearly the neck, and on the opposite side of the barrel they stop much further down the bore.
If you use the Gritters method (and do it well) which aligns to the bore as it leaves the neck, you get a really nice symmetric set of land cuts that all stop in the same place.