yobuck
Well-Known Member
I an referring to the External adjustable mounts that used a straight tube scope with no adjustment in it, All adjustments were made externally by the scope bases and the scope have a return spring that supposedly returned the scope to battery each time it was fired. This feature was also noted for absorbing most of the recoil that scopes normally receive during firing.
Here is a video on setting up this type of scope.
J E CUSTOM
Well you are correct in that the scope tube itself had no adjustments.
But the rear mount which is a separate removable device from the scope tube served as the adjustment.
Thats where the term externally adjusted came from, in that although it was a part of the scope, it was an external and removable part, rendering the scope tube itself without the means to adjust.
The scope base was no different than other bases in that it simply held the scope onto the gun by way of both front and rear external parts.
In the 90s the long range target shooters became convinced that they could no longer win with the externaly adjusted scopes, and today you wont be finding any used at least by the serious shooters.
In the mid 80s Earl Chronister set a new heavy gun 10 shot record at Williamsport of 3 3/4" in laymans terms, while using a Unertle scope.
The current heavy gun record record which is now nearing the 10 year mark, beats Earls 30 plus year old record while using the inferior scope by about a whopping 1".