In contrast, some scopes will be calibrated four clicks per MOA for hunting, and others one click per MOA for long-range applications. This is a relatively fine adjustment, used by the benchrest crowd. That's my March scope featured at the top of the post. In the breakdown of a scope, the minute of angle refers to a measurement you dial onto your scope, to change the point of impact on target by the same measure.įor example, my target scopes are calibrated so eight “clicks” on the turret, either for windage or elevation, will move the bullet on target by one minute of angle. I think most rifle shooters know the term “minute of angle” (MOA). Best of luck in mounting your scope.Leupold's Firedot Wind-Plex MOA Reticle Minute of Angle (MOA) Scope Adjustments and Holds If that does not work, perhaps you can get another hole drilled in the base to match what you already have in your receiver. I have done this with front sights on some rifles and there has been no problem with them. If it does not fit, perhaps you could elongate one of the holes in the base to make it fit.Īs to the front base, see if you can attach the base with only one screw. In regard to your question and your 1903, you could probably get the rear base to fit using the existing screw spacing you mention. A much better type of one piece scope mount is available today that attaches to the rear sight dovetail and to the front of the receiver without the need for drilling and tapping. Also, note that the rear base was made to attach to the receiver bridge AFTER the dove tail was ground down flat. The rear #59 has only one screw hole, while the front #45 has two holes spaced the same as both 1903 bases (54 and 55). Weaver numbers for the 03A3 are rear: 59 and front: 45.
Note that bases for the 03A3 were different from the 1903 - both rear and front. Leupold's 1903 bases were Rear: 308 and Front: 206.īuehler made a long one piece 1903 base: S - and a short one piece base: S-S That was for modern type scopes - not for the long classic target scopes usually associated with vintage sniper rifles. Unertl Bases were designated O and E and the rear base was numbered 2. Redfield's one-piece base was numbered JR-S. Herters made a close copy of the Weaver bases but numbered them Rear: 14A and Front: 15A. 5 inches in each.Īs mentioned by AzMedic, other companies made bases for the 1903 as well. I could not find published specifications regarding screw spacing, but both are secured by two screws and I measured the hole spacing with a micrometer at slightly over. They made two bases to fit the 1903 Springfield: The Rear base was their #54 and their front base was #55. Weaver made bases seem to have set the standard for all the scope makers back in the 1960's. I checked my collection of sight parts and consulted some of my old catalogs regarding 1903 scope bases.
I like this old rifle, but want to be able to actually use it and have a hope of hitting something- instead of just looking at it. Unfortunately, using the #46 base for the front doesn't seem likely, as it uses a different diameter and thickness than the #55, while the rear isn't matched anywhere.Īny advice would be appreciated. Weaver 2 piece bases are supposed to have. 860" between the holes on the front base, but has. I want to mount a 4x scope, just so I can use this and not be frustrated every time I aim it at the target. My close vision is shot, and my astigmatism makes lining thin lines up challenging on a good day. I intended to shoot it with iron sights but, well- I can't see the front sight. I bought it without bases, but filler screws in those spots. I have a Remington 1903 that was previously drilled/tapped for scope bases by a different owner. Does anyone have any ideas of who might have made bases for the 1903 Springfield rifle that have hole distances of.