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GMan
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Post subject: powder question  Posted: Sat Mar 17, 2007 10:04 am |
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Joined: Sat Oct 14, 2006 11:04 pm
Posts: 12
Location: Coon Rapids
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I'm reloading 45 acp using Accurate No. 5 powder. I'm reloading with 230 gr FMJ bullets and 165 gr JHP (hydra-shok) bullets. My question is; Why would the Accurate reloading guide tell me to use a high powder charge for a lighter bullet? I have been using the 230 gr FMJ for quit some time now and decided to try the 165 gr JHP. I typically use 8 gr of powder for the 230, but Accurate is telling me to use 9.2 gr to 10.2 gr for a 185 gr JHP or 9.0 gr to 10.0 gr for a 155 gr SWC. Any help here would be appreciated.
Thank you
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Rem700
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Post subject: Posted: Sun Mar 18, 2007 9:12 pm |
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Joined: Thu Aug 18, 2005 7:46 am
Posts: 257
Location: Blaine, Mn
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Think I understand what your asking if not sorry
The heavier bullet mass creates more resistance which creates more pressure with less powder.
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Pinnacle
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Post subject: Posted: Mon Mar 19, 2007 1:49 am |
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| Designated waste of protoplasm |
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Joined: Fri Feb 24, 2006 4:41 pm
Posts: 1807
Location: Western Burbs of MPLS
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Exactly as above - more powder = more pressure
Lighter bullet means less pressure - you need mroe powder to achieve the operating pressure of the gun.
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GMan
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Post subject: Posted: Mon Mar 19, 2007 8:13 pm |
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Joined: Sat Oct 14, 2006 11:04 pm
Posts: 12
Location: Coon Rapids
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Your both right - I emailed Accurate and they indeed told me the same. They suggested I use between 9.0 grains and 10.0 grains. Thanks guys!
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Every day's a Bonus - Enjoy!!!
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