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2/10/2025 11:12:08 AM
 
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Section 4: Guns/General Subject: New Firearms? Msg# 1220543
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| I guess like everything, technology has improved over the years. I find myself thinking about the difficulties a Marine sniper in WWII would have keeping his Unertl scope adjusted in combat, wondering if they had wooden boxes to carry them around in. | ||||||
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For reference, the above message is a reply to a message where: The eye relief is suitable for a high-powered rifle, meaning that when you fill the scope with a target image your eye is a safe distance from the metal edge behind the rear lens. The field of view is narrower than on a modern scope and the eye relief seems to me to be a bit finer as well. These scopes get darker with age but, thanks to having new glass in it, mine is as bright as new. The main difference is in the external adjustments. The wire crosshairs are fixed and you make range and windage adjustments by moving the whole scope tube. The micrometer-like adjustment posts use spring loading to hold the tube in place. This is perhaps the main reason that scoped target rifles were carried in metal-clad wooden rifle boxes rather than soft cases that allowed the scope tubes to be bounced around against the spring tension of the adjusters. Image below from Allan Tarvid - Image Title: Target Spot Scope Mount Uploaded: undefined  Image below from Allan Tarvid - Image Title: Lyman Scope Range Adjustment Uploaded: undefined Image Info: These old Lyman Super Target Spot scopes were adjustable from 50 feet to 200 yards or more.  Finding a scope that allows you to set the parallax/focusing knob for 50 feet can be a problem. High powered rifle scopes without a separate parallax adjustment are usually factory-set for between 50 and 100 yards while scopes designed for .22 rifles can be factory set all over the place. To see if your scope will work at a particular distance just set the rifle on sandbags or a solid shooting stand aimed at your target, then without touching the rifle put your eye behind the scope and look at the target. Move your eye left and right or up and down without moving the rifle and if the crosshairs move on the target as your eye moves, the scope's parallax adjustment is wrong for this shooting distance and unless your eye is located at exactly the same place for each shot your hits will be all over the place. This old Lyman scope can actually be adjusted down to 35-40 feet even though the lowest number shown on the adjustment scale is 50 feet. Using a 20X scope at 50 feet means you can see the .22 caliber holes easily but the narrow field of view means you have to search a bit to find the right target on the range backstop board. It's easy to shoot the wrong bull on a target with multiple bulls.
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