Reread my previous posting. Actually, an einstecklauf as a solution to a desire for a double rifle may have merit for some drillings. As I recall, Hans Zimmerman offered them in older calibers which were typically low pressure. Some cartridges I recall were 6.5x52R (25-35 Win.), 8x58R Sauer& Sohn, 8x57R-360, 9.3x72R, etc. Hans has since retired, but as I understand, he turned the company over to his son and son-in-law, I hope he is still living but considering his age I doubt it. He was the first one to offer full length einstecklaufs with adjustment at the muzzle.
Mike
