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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Weatherby 338-378 grouping issues
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<blockquote data-quote="Tikkamike" data-source="post: 426667" data-attributes="member: 22242"><p>I have a couple ideas. for 1 an 8 inch group at 100 is unacceptable. that is a direct indication to me that something is loose. take the scope off and the rings `make sure the bases are tight. Also make sure none of the screws for your bases are not too long and bottomed out. once everything is tight lap the rings set your scope in there and shoot it again. if that doesnt fix it I would swap the scope with another to see if you get the same group if not you probably have a broken scope. Lastly my dad had accuracy issues with his accumark 338-378 (1.25-1.5" groups) he switched to Barnes Tripple shocks which are a good match to a freebore rifle like yours because they are not meant to be seated close to the lands.</p><p>Can I ask why you are shooting 180's out of a 338-378? that is way too light for that gun. Take advantage of that big powder can and shoot a minumum of a 225. 180 is suited for something like a 30-06.</p></blockquote><p></p>
[QUOTE="Tikkamike, post: 426667, member: 22242"] I have a couple ideas. for 1 an 8 inch group at 100 is unacceptable. that is a direct indication to me that something is loose. take the scope off and the rings `make sure the bases are tight. Also make sure none of the screws for your bases are not too long and bottomed out. once everything is tight lap the rings set your scope in there and shoot it again. if that doesnt fix it I would swap the scope with another to see if you get the same group if not you probably have a broken scope. Lastly my dad had accuracy issues with his accumark 338-378 (1.25-1.5" groups) he switched to Barnes Tripple shocks which are a good match to a freebore rifle like yours because they are not meant to be seated close to the lands. Can I ask why you are shooting 180's out of a 338-378? that is way too light for that gun. Take advantage of that big powder can and shoot a minumum of a 225. 180 is suited for something like a 30-06. [/QUOTE]
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Weatherby 338-378 grouping issues
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