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Rifles, Reloading, Optics, Equipment
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<blockquote data-quote="Tripodmvr7" data-source="post: 2106302" data-attributes="member: 115545"><p>With the barrel length confirmed a charge of 92 grains of Shooters as a start load should be close to 2930fps with a 168Eldm. A charge of 98gr predicts 3160fps. This charge shows a case fill of 107% and that could be due to a much larger case capacity and that I do not have at present. The only way to get accurate calculated figures is to supply the following measured data :-</p><p></p><p>1. Barrel length from tip of muzzle to cocked bolt face. (Firing pin retracted)</p><p>2. Case volume of a fired case (without any resizing) in grains of water. (Weigh case dry and then fill with water level to the mouth, weigh again. Difference is the volume. Repeat for 5 to 10 case to get the mean)</p><p>3. Fired COL (Jump to lands is useful and helps if there are pressure problems)</p><p>4. Charge weight used and speed achieved.</p></blockquote><p></p>
[QUOTE="Tripodmvr7, post: 2106302, member: 115545"] With the barrel length confirmed a charge of 92 grains of Shooters as a start load should be close to 2930fps with a 168Eldm. A charge of 98gr predicts 3160fps. This charge shows a case fill of 107% and that could be due to a much larger case capacity and that I do not have at present. The only way to get accurate calculated figures is to supply the following measured data :- 1. Barrel length from tip of muzzle to cocked bolt face. (Firing pin retracted) 2. Case volume of a fired case (without any resizing) in grains of water. (Weigh case dry and then fill with water level to the mouth, weigh again. Difference is the volume. Repeat for 5 to 10 case to get the mean) 3. Fired COL (Jump to lands is useful and helps if there are pressure problems) 4. Charge weight used and speed achieved. [/QUOTE]
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