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Rifles, Reloading, Optics, Equipment
Reloading
300 Weatherby...
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<blockquote data-quote="woods" data-source="post: 271743" data-attributes="member: 6042"><p>I don't have a lot of experience with the 300 Wtby, so I should maybe keep my mouth shut. But I am currently trying to work up a load in a client/friend's rifle, a Weatherby Mark V.</p><p></p><p>First problem is that the magazine is very short for the amount of throat in the chamber. In order to fit the magazine the bullet has to be loaded .275" back from the lands. Weatherby does this on purpose to use the long throat as part of the combustion chamber and enable them to put more slow burning powder in their factory ammo. But what this does to reloaders is greatly reduce velocity.</p><p></p><p>I started out with a medium load of RL19 and RL22 with the 180 gr TTSX and the 180 Accubond</p><p></p><p>TTSX - RL19 - 77 gr - 2906 fps</p><p>TTSX - RL22 - 78 gr - 2858 fps</p><p>AB - RL19 - 77 gr - 2899 fps</p><p>AB - RL22 - 78 gr - 2851 fps</p><p></p><p>So this told me that the rifle does not get much velocity so I did a 1 shot per load Audette ladder with the TTSX going up in .3 gr increments</p><p></p><p>TTSX - RL22 - 78.0 gr to 80.1 gr (0.1 gr over book max) - 2824 fps to 2923 fps</p><p>TTSX - RL25 - 79.7 gr to 81.5 gr - 2807 fps to 2806 fps</p><p></p><p>now the velocity is still way low even though Nosler #5 manual say 80.0 gr RL22 is max and gets 3132 fps. ***</p><p></p><p>So next I have continued the ladder up in RL25 (which showed the best results on the target and is more available than RL22) and found some IMR7828 to try this ladder next</p><p></p><p>TTSX - RL25 - 81.8 gr to 84.5 gr </p><p>TTSX - IMR7828 - 83.3 gr to 86.0 gr</p><p></p><p>Book max for the IMR7828 is 84.5 gr and shows 3185 fps. I will shoot the IMR7828 loads and look for pressure signs on each case as it steps up.</p><p></p><p>Now what I am trying to say is that this is a lot of useless shooting in order to get velocities even up to 300 win mag standards. Frustrating as hell and I don't like to go over book max, especially in someone else's gun.</p><p></p><p>Like Longshot said, the brass is excellent, very consistant neck thickness. But I will never buy a 300 Wtby myself.</p></blockquote><p></p>
[QUOTE="woods, post: 271743, member: 6042"] I don't have a lot of experience with the 300 Wtby, so I should maybe keep my mouth shut. But I am currently trying to work up a load in a client/friend's rifle, a Weatherby Mark V. First problem is that the magazine is very short for the amount of throat in the chamber. In order to fit the magazine the bullet has to be loaded .275" back from the lands. Weatherby does this on purpose to use the long throat as part of the combustion chamber and enable them to put more slow burning powder in their factory ammo. But what this does to reloaders is greatly reduce velocity. I started out with a medium load of RL19 and RL22 with the 180 gr TTSX and the 180 Accubond TTSX - RL19 - 77 gr - 2906 fps TTSX - RL22 - 78 gr - 2858 fps AB - RL19 - 77 gr - 2899 fps AB - RL22 - 78 gr - 2851 fps So this told me that the rifle does not get much velocity so I did a 1 shot per load Audette ladder with the TTSX going up in .3 gr increments TTSX - RL22 - 78.0 gr to 80.1 gr (0.1 gr over book max) - 2824 fps to 2923 fps TTSX - RL25 - 79.7 gr to 81.5 gr - 2807 fps to 2806 fps now the velocity is still way low even though Nosler #5 manual say 80.0 gr RL22 is max and gets 3132 fps. *** So next I have continued the ladder up in RL25 (which showed the best results on the target and is more available than RL22) and found some IMR7828 to try this ladder next TTSX - RL25 - 81.8 gr to 84.5 gr TTSX - IMR7828 - 83.3 gr to 86.0 gr Book max for the IMR7828 is 84.5 gr and shows 3185 fps. I will shoot the IMR7828 loads and look for pressure signs on each case as it steps up. Now what I am trying to say is that this is a lot of useless shooting in order to get velocities even up to 300 win mag standards. Frustrating as hell and I don't like to go over book max, especially in someone else's gun. Like Longshot said, the brass is excellent, very consistant neck thickness. But I will never buy a 300 Wtby myself. [/QUOTE]
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