info for 300 Win Mag data for a semi-auto

gands

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Oct 28, 2007
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I have a Benelli semi-auto in a 300 Win Mag, I would like to do some reloads for it using 180 grain bullets. I understand that loads for a semi-auto are some what different. Can some one explain some of the differences. I thought of using H1000 powder & Federal 215LR Magnum Primers. Thanks in advance.
 

ChadTRG42

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Jan 22, 2007
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Re: info for 300 Win Mag data for a semi-auto

Just full length size the brass, and it will chamber fine.
H1000 is a slow powder already, and is really slow for the 180 grain bullets in a semi auto. I'd lean towards a faster powder like R22, or even IMR 4350.
 

desertHK

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Feb 17, 2008
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Re: info for 300 Win Mag data for a semi-auto

Like ChadTRG42 said, with semi auto, you will most likely need to full length resize each time you shoot. May want to anneal your brass to prolong life of brass. Got a picture of your stick?
 

gands

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Oct 28, 2007
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Re: info for 300 Win Mag data for a semi-auto

Thanks for the info, I appreciate it. I'd post a pic but the camera died.