Yes, if anyone tells you otherwise, check the ballsistics information for the shells they are recomending. Most cheaper sabot alternatives will have poor ballistics compared to the Copper solids.

Keep in mind there are other sabots in that price range that shoot flatter than the Copper Solids. You should at least give them a try if you are already spending the money. Unfortunately, you will have to test them in your own gun to see if they are as accurate as well.