Optimal Hunting bullet for 18in Grendels.

[LRRPF52]

We have 3 possibilities one two chronys are off only when chronying Rifles with AR stoner 5R rifling barrels but not other rifles. Very unlikely!!. My loads are hot BUT when shot from other grendels have at least 100 or more FPS slower velocities. Also very unlikely. They could be and probably are a little hot and need to come down but that's not the whole story because they are significantly slower out of other rifles. The third possibility is something about my rifles that both share the same barrel bolt combo is making them faster. I think its a combo of a little hotter loads and faster barrels possibly. The only way to be sure is if someone else with factory ammo and a completely different chrony takes measurements.

Since nobody owns your barrels, their barrels will have different characteristics, unless you suspect the 5R rifling to be involved. I'm still interested in who is making barrels with 5R rifling that are button-rifled.