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| More 8x50R data http://www.yesterdaysweapons.com/phpBB3/viewtopic.php?f=30&t=274 |
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| Author: | GOEX FFF [ Tue Aug 07, 2007 8:59 pm ] |
| Post subject: | More 8x50R data |
gschwertley (11/26/05 11:41 pm) The experiments with this caliber continue. 185 gr. Remington spire point (bulk bullet) .323 42.0 gr. IMR 4350 CCI 250 mag primer Cut-down & reformed military 8x56R case (boxer primer conversion) Avg. muz. velocity 1398 Standard deviation 16.97 205 gr. Hornady spire point .330 42.0 gr. IMR 4350 CCI 250 mag primer Cut-down and reformed Graf 7.62x54R case Avg. muz. vel. 1423 Std. dev. 25.62 Compare the data above to that of "Old Western Scrounger" brand of custom-made 8x50R ammo with a 220 grain bullet, below: Avg. muz. velocity 1854 Standard deviation 12.54 The Old Western Scrounger ammo has respectible velocity (for this caliber and bullet weight) and a good spread. This ammo is no longer being sold. The comparison shows me that I have a way to go to duplicate the OWS performance because I have been conservative. On the other hand, this is never a bad idea when you are experimenting with loads. I will disassemble one of the OWS loads to "see what I can see." When using the pointed bullets in loading 8x50R, they often do not feed well. The rifles re-worked to shoot 8x56R have modifications made to the ramping in the receiver to take care of this. Long, round-nose lead bullets feed fine in the 8x50R, but heavy, round nose jacketed bullets are difficult to find in 8mm (.323). Some time soon, I will try 170 gr. RN jacketed bullets for feed. See my previous notes on reloading this caliber as to why you can use .323 or .329/.330 bullets in this rifle. "Sehr schwer, mein Herr" |
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