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Rifles, Reloading, Optics, Equipment
Reloading
Trouble Loading for a 257 Wheatherby
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<blockquote data-quote="fishingstockwell" data-source="post: 1208473" data-attributes="member: 96590"><p>Dosh - </p><p></p><p>This gun is the model with the 28" barrel, and it does have a very long throat. Using the Hornday OAL gauge it pushes the bullet all the way out of the case before it contacts the lands, so I am assuming it was chambered with a standard 257 wby reamer with the .378 free bore. The 28" barrel is sure nice for velocity. Staying within Nolser's max load of 74 grains, it was shooting the 110 very close to 3500 fps. </p><p></p><p>MudRunner -</p><p></p><p>I normally try to run my reloads very close to the lands for the exact reason you described. With the huge freebore of more than a 1/3, there is no getting close, and I'm not sure I want to. The Weatherby cartridges were designed with a lot of free bore to reduce over pressure that would otherwise be caused by the amount of powder in the larger case. In the 1960's that was the best solution to increase velocity without creating over pressure. I was thinking about shortening the COAL, only because most guys have very good luck with the factory loaded ammo and it is much shorter than SAMMI spec. Just thinking it may be some weird quirk with the Weatherbys. </p><p></p><p>I wish I knew what powder they were using. It would be easy to measure a factory load, pull the bullet and weigh the powder, assuming it was a standard powder that Norma uses to load the factory rounds. </p><p></p><p>Thanks for all the replies,</p><p></p><p>Matt</p></blockquote><p></p>
[QUOTE="fishingstockwell, post: 1208473, member: 96590"] Dosh - This gun is the model with the 28" barrel, and it does have a very long throat. Using the Hornday OAL gauge it pushes the bullet all the way out of the case before it contacts the lands, so I am assuming it was chambered with a standard 257 wby reamer with the .378 free bore. The 28" barrel is sure nice for velocity. Staying within Nolser's max load of 74 grains, it was shooting the 110 very close to 3500 fps. MudRunner - I normally try to run my reloads very close to the lands for the exact reason you described. With the huge freebore of more than a 1/3, there is no getting close, and I'm not sure I want to. The Weatherby cartridges were designed with a lot of free bore to reduce over pressure that would otherwise be caused by the amount of powder in the larger case. In the 1960's that was the best solution to increase velocity without creating over pressure. I was thinking about shortening the COAL, only because most guys have very good luck with the factory loaded ammo and it is much shorter than SAMMI spec. Just thinking it may be some weird quirk with the Weatherbys. I wish I knew what powder they were using. It would be easy to measure a factory load, pull the bullet and weigh the powder, assuming it was a standard powder that Norma uses to load the factory rounds. Thanks for all the replies, Matt [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Trouble Loading for a 257 Wheatherby
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