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Velocity Spreads

 
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  #8  
Old 10-04-2007, 05:41 PM
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a 7rum is considered an extremely overbore cartridge. generally speaking, the more overbore you get, the harder it is to keep the ES down.

Retumbo is great for velocity, but not sure i've ever heard anyone getting their lowest ES with it. usually it gives higher velocity spreads.
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Last edited by davewilson; 10-04-2007 at 05:46 PM.
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Old 10-04-2007, 07:07 PM
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i worked up a load of 95.5 gr of retumbo and 200 gr ab 3135fts for my 300 rum that has es of 29fts avg of ten shoots. but i might of let a couple of them cook a little in the chamber i'll take that bit of advice into consideration next time i chrono my loads thanks
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Old 10-04-2007, 07:23 PM
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Quote:
Originally Posted by davewilson View Post
a 7rum is considered an extremely overbore cartridge. generally speaking, the more overbore you get, the harder it is to keep the ES down.

Retumbo is great for velocity, but not sure i've ever heard anyone getting their lowest ES with it. usually it gives higher velocity spreads.
Dave,
I have two 300 RUM, all I have used is Retumbo, lots of Retumbo. Keeping the ES 15 or less has not been an issue and many times it will go in the single digits. It works good wood Federal and CCI primers. As you know, to get single numbers you have to always keep in mind not to cook the ammo in the chamber after the firs shot, specially when shooting hot loads.
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  #11  
Old 10-05-2007, 05:24 PM
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Eaglet, know of 2 others that get good results with Retumbo in their 300rum's. i've tried it in a couple big cases and know a few others that have also and like i said. generally speaking, it gives a lot of velocity but higher spreads. it's great to have several options. makes reloading much more enjoyable.

speaking of options.....Eric, where are the 338 bullets?
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