I have been Paper Patching and Naked Bullet shooting my original .565 cal Whitworth Match Rifle.At 300 yards the PP bullets shoot 12" Higher than the Naked bullets.The PP Bullets are the Naked bullets Swaged down and Wrapped.I guess there is a better seal with the PP Bullet.Elsewhere on this site I posted details of the Hollow Base Hollow nose Bullet as designed by Mr Whitworth.http://i1052.photobucket.com/albums/...ery/003-16.jpg