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09-29-2007, 07:19 PM
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#1 |
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XDTalk 100 Member
Join Date: Sep 2007
Location: Clinton Township, Mchigan
Posts: 181
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New guy question about GR count
What is the difference between 115gr and 125gr 9mm ammo? I was thinking it was how much punch it packs. I found some 125gr Ultramax round nose for target practice ammo for 6.99 on sale from 12.00. I have only put 100 rounds through my XD 9 and I am still learning about the basics of handguns. Thanks.
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09-29-2007, 08:02 PM
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#2 |
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XDTalk 1K Member
Join Date: Jan 2007
Posts: 1,226
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The diff. is 10gr & about 50fps. Most 115gr FMJ runs about 1200fps, 124gr FMJ about 1150fps. For practice ammo, makes no real diff. You should practice w. a laod that is close to your JHP, SD/HD load.
Last edited by fredj338; 09-29-2007 at 08:05 PM. |
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10-01-2007, 07:36 PM
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#3 |
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XDTalk 100 Member
 Join Date: Mar 2007
Location: Far Eastern West Virgina
Posts: 354
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The difference is the weight of the actual bullet. A heavier bullet will travel slower all other factors being equal. You will probably get more felt recoil with a heavier bullet too.
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MikeS. Escaped from Kalifornia in 1998. |
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10-01-2007, 10:45 PM
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#4 | |
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XDTalk 4K Member
 
Join Date: Jun 2004
Location: Alpine Texas
Posts: 4,171
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Grains is a unit of measurement. There are 7000 grains in one pound. So a 115gr bullet is 115/7000 of a pound.
Heavier bullets are usually slower than lighter ones. Which to use use depends more on what you like. I like slower heavier bullets. IMHO 50 fps is not going to make any difference.
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