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Long Range Hunting & Shooting
APS 338 Raptor, R&D early results
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<blockquote data-quote="Engineering101" data-source="post: 844226" data-attributes="member: 63138"><p><span style="font-size: 10px">Kirby,</span></p><p> </p><p><span style="font-family: 'Verdana'"><span style="font-size: 10px">Quick Load lists the burn rate of powders. Below are the default values from QL for several powders that were mentioned in this thread. This burn rate is determined by testing. Of course, burn rate varies from lot to lot but should be in this general neighborhood. As you can see RL33 is slower than most. It also has the added advantage of a burn rate control agent impregnated into the powder granules like RL17. I'm running 99.0 grains behind a 200 gr Accubond at 3,150 fps in my 300 RUM with no pressure signs. Still waiting for the 210 Accubond Long Ranges to show up. </span></span></p><p> </p><p><span style="font-family: 'Verdana'"><span style="font-size: 10px">By the way Ramshot Magnum is a ball powder that is relatively temp stable. There is test data on Barnes' website showing this which I have confirmed with my own testing in 338 RUM. </span></span></p><p> </p><p><span style="font-family: 'Verdana'"><span style="font-size: 10px">Relative powder burn rates from QL:</span></span></p><p><span style="font-family: 'Verdana'"><span style="font-size: 10px">H4831 0.4301</span></span></p><p><span style="font-family: 'Verdana'"><span style="font-size: 10px">H1000 0.3660</span></span></p><p><span style="font-family: 'Verdana'"><span style="font-size: 10px">Retumbo 0.3370</span></span></p><p><span style="font-family: 'Verdana'"><span style="font-size: 10px">Magnum 0.3250</span></span></p><p><span style="font-family: 'Verdana'"><span style="font-size: 10px">N570 0.2770</span></span></p><p><span style="font-family: 'Verdana'"><span style="font-size: 10px">H870 0.2750</span></span></p><p><span style="font-family: 'Verdana'"><span style="font-size: 10px">US869 0.2735</span></span></p><p><span style="font-family: 'Verdana'"><span style="font-size: 10px">H50BMG 0.2705</span></span></p><p><span style="font-family: 'Verdana'"><span style="font-size: 10px">RL33 0.2700</span></span></p><p><span style="font-family: 'Verdana'"><span style="font-size: 10px">20N29 0.2400</span></span></p><p><span style="font-family: 'Verdana'"><span style="font-size: 10px">RL50 0.2170</span></span></p><p> </p></blockquote><p></p>
[QUOTE="Engineering101, post: 844226, member: 63138"] [SIZE=2]Kirby,[/SIZE] [SIZE=2][/SIZE] [FONT=Verdana][SIZE=2]Quick Load lists the burn rate of powders. Below are the default values from QL for several powders that were mentioned in this thread. This burn rate is determined by testing. Of course, burn rate varies from lot to lot but should be in this general neighborhood. As you can see RL33 is slower than most. It also has the added advantage of a burn rate control agent impregnated into the powder granules like RL17. I’m running 99.0 grains behind a 200 gr Accubond at 3,150 fps in my 300 RUM with no pressure signs. Still waiting for the 210 Accubond Long Ranges to show up. [/SIZE][/FONT] [FONT=Verdana][SIZE=2] [/SIZE][/FONT] [FONT=Verdana][SIZE=2]By the way Ramshot Magnum is a ball powder that is relatively temp stable. There is test data on Barnes’ website showing this which I have confirmed with my own testing in 338 RUM. [/SIZE][/FONT] [FONT=Verdana][SIZE=2] [/SIZE][/FONT] [FONT=Verdana][SIZE=2]Relative powder burn rates from QL:[/SIZE][/FONT] [FONT=Verdana][SIZE=2]H4831 0.4301[/SIZE][/FONT] [FONT=Verdana][SIZE=2]H1000 0.3660[/SIZE][/FONT] [FONT=Verdana][SIZE=2]Retumbo 0.3370[/SIZE][/FONT] [FONT=Verdana][SIZE=2]Magnum 0.3250[/SIZE][/FONT] [FONT=Verdana][SIZE=2]N570 0.2770[/SIZE][/FONT] [FONT=Verdana][SIZE=2]H870 0.2750[/SIZE][/FONT] [FONT=Verdana][SIZE=2]US869 0.2735[/SIZE][/FONT] [FONT=Verdana][SIZE=2]H50BMG 0.2705[/SIZE][/FONT] [FONT=Verdana][SIZE=2]RL33 0.2700[/SIZE][/FONT] [FONT=Verdana][SIZE=2]20N29 0.2400[/SIZE][/FONT] [FONT=Verdana][SIZE=2]RL50 0.2170[/SIZE][/FONT] [FONT=Verdana][SIZE=2] [/SIZE][/FONT] [SIZE=2][/SIZE] [/QUOTE]
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