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Once I find the best c.o.a.l for my rifle will will that lenght still be the best for all loads and bullets I use? Some people say what they think! Then there's those that say what they know! And then there's those few that want to know everything! | ||
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The best OAL for one bullet isn`t always the best for all. The distance from the lands that works best with one bullet will "usually" work best with others. If you don`t have a bullet comparator such as the Sinclair or Stoney Point to measure OAL from the ogive I would recommend one. Measuring the tip to base lenght of your cartridges is not a consistant way to measure OAL. ------------------------------------ The trouble with the Internet is that it's replacing masturbation as a leisure activity. ~Patrick Murray "Why shouldn`t truth be stranger then fiction? Fiction after all has to make sense." (Samual Clemens) "Saepe errans, numquam dubitans --Frequently in error, never in doubt". | |||
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I sure wouldn't bet on it.....don't put too much stock in this number! It's not as important as one might think. /////////////////////////////////////////////////////////////////////////// "Socialism is a philosophy of failure, the creed of ignorance, and the gospel of envy, its inherent virtue is the equal sharing of misery." Winston Churchill | |||
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In a nutshell, no. The bullet to land distance is the last thing I tinker with to fine tune loads that are already shooting very respectable. | |||
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I did not type what I was thinking! What I meant to ask was what Ol Joe hit on! the same distance from the lands. not coal. and i found my length using the stony point and measure with a Sinclair comparitor. Some people say what they think! Then there's those that say what they know! And then there's those few that want to know everything! | |||
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I can't remember where or when I read an article about once you find the bullet jump distance that a rifle likes, most bullets will work good at that distance. What I have done when changing bullets is to change the load and use the "freebore" that worked good for the last one. When I find a powder/primer load that looks good, I adjust the seating depth both closer and further by 0.005, 0.010 and 0.015 and see if anything gets better. ______________________ Smedley  ______________________ From Audacity of Hope: 'I will stand with the Muslims should the political winds shift in an ugly direction.' B.H.Obullshitter ------------------------------------ "Socialism is a philosophy of failure, the creed of ignorance, and the gospel of envy, its inherent virtue is the equal sharing of misery" Winston Churchill ------------------------------------ "..it does not require a majority to prevail, but rather an irate, tireless minority keen to set brush fires in people's minds.." Samuel Adams ------------------------------------ Facts are immaterial to liberals. Twisted perceptions however are invaluable. ------------------------------------ We Americans were tired of being thought of as dumb, by the rest of the world. So we went to the polls in November 2008 and removed all doubt.....let's not do it again in 2012 please. | |||
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NO. it is best to find the one that gives best function and accuracy for each specific bullet. However, some could turn out to be the same..... "Bitte, trinks du nicht das Wasser. Dahin haben die Kuhen gesheissen." | |||
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I have allways just done the unscientific thing. I seat a bullet long and then chamber it. If its to long, seat it a little deeper and rechamber. When I get real close to being able to close the bolt I only turn the die stem about a half turn till the bolt closes with resistance. Then I go .25 turn till it closes freely. Its probably better to use a comparitor but I would need about 15 already for all my loading, and by the time I cash in my my chips mabye 25 more. And I almost allways manage to find a load that will shoot real well using my method ...tj3006 freedom1st | |||
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Not all bullets are shaped the same, so the same C.O.L doesn't mean that two different bullet designs are the same distance from engaging the rifling lands. And also not all bullets are made the same way, (jacket thickness, lead hardness, mono-metal vs jacketed etc) so you may need to adjust the distances from the rifling lands to achieve the best accuracy for each different bullet design. | |||
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