Has any one used the new SP ,heavy contour,cantilevered scope mount,rifled slug bbl from Remington ? I read in a review that they were poorly made. I am going to go to a rifled bbl. from a smooth bore and want to get input on whats up . Is the heavy bbl. from Hastings any good or Badger? I will be installing it on a newer 870 mag.. I e-mailed Hastings for the dimensions of there heavy bbl. ,but its been a week and no response.