I have the Remington 870 Marine Magnum and I recently notice some small grooves inside the barrel. This was the first time i have used it and I have no idea if this is normal or not? Is the barrel damaged or is this normal?
Thanks for any assistance anyone can give. I will upload some pictures if it will help.
Thanks!
Thanks for any assistance anyone can give. I will upload some pictures if it will help.
Thanks!


















































