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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
ordered new chronograph, now what
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<blockquote data-quote="Russ Hatch" data-source="post: 306729" data-attributes="member: 12444"><p>Not neccesarily, In my experience the best grouping load is not usually the max velocity load. There are usually two or more vibration nodes for each barrel load combination that group good. Sometimes you can reach the higher velocity node that gives good grouping before exceeding the max load for your rifle. If I can't reach that node without high presure signs I back my load down to the next lower node and live with the velocity. There is not usually that much difference in the velocity. With that being said I will also try different powders and bullets in different combination to get the best accruacy and the highest velocity. This is where a chrono comes in very handy. If a given load of a different powder does not give me a higher velocity than my standard load does there is no reason to pursue that powder bullet combination. In my 7mm Mauser ww760 gives me good accuracy with Berger 168 grain vld bullets at 2550 fps but I get slightly better accuracy with Hornady 160 grain bullets and RL 19 at 2300 fps. The difference is .2 inches avg at 100yds. The avg is over 30 3 shot groups, .3xx avg for the Hornady bullets and . 5xx or below for the Bergers. I shoot the Berger load when hunting because of the velocity difference..</p></blockquote><p></p>
[QUOTE="Russ Hatch, post: 306729, member: 12444"] Not neccesarily, In my experience the best grouping load is not usually the max velocity load. There are usually two or more vibration nodes for each barrel load combination that group good. Sometimes you can reach the higher velocity node that gives good grouping before exceeding the max load for your rifle. If I can't reach that node without high presure signs I back my load down to the next lower node and live with the velocity. There is not usually that much difference in the velocity. With that being said I will also try different powders and bullets in different combination to get the best accruacy and the highest velocity. This is where a chrono comes in very handy. If a given load of a different powder does not give me a higher velocity than my standard load does there is no reason to pursue that powder bullet combination. In my 7mm Mauser ww760 gives me good accuracy with Berger 168 grain vld bullets at 2550 fps but I get slightly better accuracy with Hornady 160 grain bullets and RL 19 at 2300 fps. The difference is .2 inches avg at 100yds. The avg is over 30 3 shot groups, .3xx avg for the Hornady bullets and . 5xx or below for the Bergers. I shoot the Berger load when hunting because of the velocity difference.. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
ordered new chronograph, now what
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