04-11-2018, 07:42 PM
BCA strike two.
Got the upper back today finally. We an upper. It fit looser than the first one and the chamber throat is SHORTER than the first one. Loaded rounds have the bullets set back 0.035". Nosler 120 BT should have a col of 2.245" and they measure 2.205" just touching the lands. The loaded round must have been jammed into the rifling when it chambered.
the first barrel yielded 2.234" just touching the lands .
Suggestions?
Got the upper back today finally. We an upper. It fit looser than the first one and the chamber throat is SHORTER than the first one. Loaded rounds have the bullets set back 0.035". Nosler 120 BT should have a col of 2.245" and they measure 2.205" just touching the lands. The loaded round must have been jammed into the rifling when it chambered.
the first barrel yielded 2.234" just touching the lands .
Suggestions?

