About to pull my hair out

[Kwaynem]

I have been shooting the same load for years in a few different rifles (6.5 creedmoor) and I cannot get it to shoot out of this Ruger American predator I know it’s not the rifle I can shoot other loads through it and they all shoot good groups I have measured necks after resizing and everything else I can think of maybe it just don’t like them even though it’s the same twist rate as the other 3 rifles?

 

[Ndenway]

Try different weight bullets,

I've got a 308 that shoots 180gr bullets pretty accurate 5 shot groups, 165s widen up a bit and 150s do about 5" groups at 100yrds

 

[Beautiful Mulberry]

If it shoots the others really good and not “your” favorite it may be telling you that it doesn’t like them.
I had a 223 bolt that loved Nosler partitions 55gr only.
I really like the 45gr sierra HP, the gun just did not like them.