Haven't had any issues with terminal performance with either. Only a few animals with the 175's but a lot with the 180's. If I had a bunch of the 175's I'd have no issues using them. If I was buying a new lot for a new rifle, 180's would get the nod
It will as long as you’re at 1000’ elevation. Both my other 25 saum barrels are a 7.75 twist and an 8 twist and they shoot great. I shoot the 135’s in both