The first TX200 I ordered in 2017 had corrosion in the barrel. I returned it and got a second one which also had corrosion. I though that's how it's suppose to be so I kept it.Since I purchased the rifle, I have shot many thousands pellets through it and have installed a Vortek kit + seal.Today I took a picture of the bore and the corrosion is visible (it hasn't gotten worse).I've shot the below groups at 23Y and 30Y all 5 shot groups.Question: Do you think that this corrosion is detrimental to the accuracy I'm getting?