Loose spot in barrel

[MLM]

I bought a CVA optima V2 that I shot yesterday for the 1st time. Was loading hornady ELDX's over 100 GR by volume triple 7. I noticed a loose spot in my barrel about halfway down. Basically while loading everything pushed nice and even but then there was a clunk feeling like the friction let up about halfway and then nice and even again. I did not try to measure the length of the loose spot but it is short. I consistently noticed this. What should I do? Will this affect accuracy? I did shoot 4 shots into a 1.5" group at 50 yd. After a while I backed up to 75 yd and shot a few shots and they were all over the place but my shoulder was wearing out and I think I was pulling the shots. Will this affect accuracy? What should I do?