I'd be timorous to shoot a heavy recoil rifle with a cocking piece sight, especially stock crawling prone or sitting, or uphill, even tho they snap forward on shooting. Also, this may be heresy, but the 103 altho an elegant looker tends to work loose even on solid base SS rifles and wriggles even more on bolt actions. That said, I have them for Krag, 1903, High Wall and Savage 99 - the last really rare. There is a better choice if you can find one, the Parker Hale Sportarget No. 10. These also have clicking windage and elevation and are much solider than the 103, but were not made for the 1903 or the Krag. Likely a 98 Mauser or Mannlicher version could be adapted. Parker Hale offered them up through the 1950s for many American, Brit and Euro rifles.
