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Rifles, Reloading, Optics, Equipment
Reloading
A strange problem with 6,5x284 - Pressure
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<blockquote data-quote="Greyfox" data-source="post: 1685100" data-attributes="member: 10291"><p>Just a thought, but you didn't mention the free bore of your chamber. I'd check it as well as the finish of your throat. Im not sure that this is your case, but I have seen what you describe with 6.5X284's which have been chambered with the free-bore of the 284 Winchester throat dimensions...a throwback from the 6.5x284's wildcat days. This is not a Norma spec barrel. There are some gunsmiths and barrel makers that still produce the 284W length throat, a short action design. This can reduce bullet seating depth to the lands compared to a Norma spec chamber by +.1". 56 gr of Retumbo, or relative charges of other powders will produce over pressure conditions compared to the Norma spec chamber</p><p>The diagram below is representative of a the Norma spec chamber by Pacific Tool. Note the free-bore of .188". I find it wise to confirm this dimension when having barrels chambered.</p><p>[ATTACH]143718[/ATTACH]</p></blockquote><p></p>
[QUOTE="Greyfox, post: 1685100, member: 10291"] Just a thought, but you didn’t mention the free bore of your chamber. I’d check it as well as the finish of your throat. Im not sure that this is your case, but I have seen what you describe with 6.5X284’s which have been chambered with the free-bore of the 284 Winchester throat dimensions...a throwback from the 6.5x284’s wildcat days. This is not a Norma spec barrel. There are some gunsmiths and barrel makers that still produce the 284W length throat, a short action design. This can reduce bullet seating depth to the lands compared to a Norma spec chamber by +.1”. 56 gr of Retumbo, or relative charges of other powders will produce over pressure conditions compared to the Norma spec chamber The diagram below is representative of a the Norma spec chamber by Pacific Tool. Note the free-bore of .188”. I find it wise to confirm this dimension when having barrels chambered. [ATTACH]143718[/ATTACH] [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
A strange problem with 6,5x284 - Pressure
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