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Rifles, Reloading, Optics, Equipment
Reloading
300 WSM with Sierra 165gr HPBT
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<blockquote data-quote="Shortmagman" data-source="post: 887417" data-attributes="member: 10723"><p>The Sierra manual gives the following for a few of the powders that you have listed.</p><p></p><p>Firearm Used: Win Model 70</p><p>Barrel Length 24 "</p><p>Cases: win</p><p>Primer: WLRM</p><p></p><p>RL 19 Start Load 61.7 grains Max load 70.1 </p><p>RL 22 Start 63.0 Max 7l.0</p><p>IMR-4831 61.7 68.7</p><p>H4831SC 63.l 70.9</p><p></p><p>They show that you can get the highest velocity of 3100 ft/sec with both RL-19 and RL-22. The others are 50-100 ft/sec slower.</p><p></p><p></p><p>I have shot a great deal of RL-19 in my 300WSM. My Model 70 loves RL-19 with both 155 and 165 grain HPBT. I never pushed the load because I was looking for accuracy, so I settled on 67-69 grains of RL-19 in Norma cases and WLRM primers.</p><p></p><p>My second choice is IRM-4831. This powder produced good accuracy and velocity in my 300WSM's.</p></blockquote><p></p>
[QUOTE="Shortmagman, post: 887417, member: 10723"] The Sierra manual gives the following for a few of the powders that you have listed. Firearm Used: Win Model 70 Barrel Length 24 " Cases: win Primer: WLRM RL 19 Start Load 61.7 grains Max load 70.1 RL 22 Start 63.0 Max 7l.0 IMR-4831 61.7 68.7 H4831SC 63.l 70.9 They show that you can get the highest velocity of 3100 ft/sec with both RL-19 and RL-22. The others are 50-100 ft/sec slower. I have shot a great deal of RL-19 in my 300WSM. My Model 70 loves RL-19 with both 155 and 165 grain HPBT. I never pushed the load because I was looking for accuracy, so I settled on 67-69 grains of RL-19 in Norma cases and WLRM primers. My second choice is IRM-4831. This powder produced good accuracy and velocity in my 300WSM's. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
300 WSM with Sierra 165gr HPBT
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