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IMR 8208 XBR in .220 Swift?

 
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Old 02-04-2010, 11:35 PM
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Join Date: Aug 2009
Location: Grand Forks, ND
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IMR 8208 XBR in .220 Swift?

I just ran across some of the new IMR 8208 XBR powder today and picked up a pound to try it out. Got a pound for $21.99/lb.

I know IMR has some published numbers out on their web site and in several calibers, but I was wondering if anyone has tried it yet and in what caliber? I was thinking about trying it in my .220 swift with 40 gr Noslers, and 55 gr Sierra Blitzkings along with a couple other calibers. They only have published numbers for a 36 gr bullet with the 220, but I figured I will work up a load using the other two bullets. Just seeing if anyone else has done it so I can cut my work in half. If not, I'll have fun doing it regardless.

Here is the data from IMR for the .220 swift.

36 GR. BAR VG FB IMR 8208 XBR .224" C.O.L.=2.635" gr=38.0 FPS=4078 46,800 CUP Max gr=40.0 FPS=4296 53,000 CUP

As a side note, They have data for the .22-250 for bullets ranging from 36-70 gr bullets, so I think the .220 should not be a problem, maybe just not enough need for data out there yet for the .220 swift?

Last edited by spitfire_er; 02-04-2010 at 11:42 PM.
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Old 02-05-2010, 08:36 AM
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Join Date: Jan 2007
Location: PA
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Re: IMR 8208 XBR in .220 Swift?

Bought a pound last week, have not tried it yet. It should work well in the PPC and BR's. I am thinking of giving it a shot in my .22-250's. Hodgen says 52 grain A-Max bullets min is 32.5 grs., max is 35.5 grs. & velocity is 3612 fps. 8208 burn rate is between 3031 and 4198. Maybe OK with light bullets, but too fast for heavy ones.
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