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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Shimming rear base
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<blockquote data-quote="Darryl Cassel" data-source="post: 22599" data-attributes="member: 34"><p>TX</p><p></p><p>On another note.</p><p></p><p>With the Unertl or B&L external adjustment scopes, the length of the base was/is a direct reflection to the click adjustment valuations.</p><p>A 7.25" base spacing gave 1/4 Min clicks. At 12" it gave 1/8 Min clicks evaluations. The base spacing is a direct reflection of the click valuations in these scopes.</p><p></p><p>Still use them at 1/4 min spacing.</p><p></p><p>I have also found that with a .020" tapored base or the Burrus inserts that are .020" will give me 20" height difference at 100 yards or 80 1/4 Min extra usable clicks.</p><p>.001" rear height addition has always worked out to 1" at 100 yards for me.</p><p></p><p>Later</p><p>DC</p><p></p><p>[ 06-20-2002: Message edited by: Darryl Cassel ]</p></blockquote><p></p>
[QUOTE="Darryl Cassel, post: 22599, member: 34"] TX On another note. With the Unertl or B&L external adjustment scopes, the length of the base was/is a direct reflection to the click adjustment valuations. A 7.25" base spacing gave 1/4 Min clicks. At 12" it gave 1/8 Min clicks evaluations. The base spacing is a direct reflection of the click valuations in these scopes. Still use them at 1/4 min spacing. I have also found that with a .020" tapored base or the Burrus inserts that are .020" will give me 20" height difference at 100 yards or 80 1/4 Min extra usable clicks. .001" rear height addition has always worked out to 1" at 100 yards for me. Later DC [ 06-20-2002: Message edited by: Darryl Cassel ] [/QUOTE]
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Shimming rear base
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