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Odyessy in "F" Open

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Re: Odyessy in "F" Open

Postby Grimstod » Thu Feb 09, 2017 4:28 am

Mine cost 250$
"We are what we repeatedly do. Excellence, then, is not an act, but a habit."
Aristotle
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Re: Odyessy in "F" Open

Postby Just1Spark » Wed Mar 08, 2017 3:50 pm

Beautiful work! I cant wait to hear the results!
For bedding, look up Marine Tex. Works great.


200gr 3100fps out of a mosin (54r) case!? o.0 Thats gonna be rough aint it?
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Re: Odyessy in "F" Open

Postby ShootnMathews » Thu Mar 09, 2017 5:37 am

Just1Spark wrote:Beautiful work! I cant wait to hear the results!
For bedding, look up Marine Tex. Works great.


200gr 3100fps out of a mosin (54r) case!? o.0 Thats gonna be rough aint it?

That's 300 ultra mag speeds, isn't it? I'll check my book. .........yes, my book shows max 300 ultra mag speeds with a 200 grain bullet at 3119 fps with 106 grains of accurate 8700. I'm not saying it won't get there because different case shapes have different effects on pressure and speeds. I'm curious to see exactly how it does. Great work
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Re: Odyessy in "F" Open

Postby Grindl » Thu Mar 09, 2017 11:12 am

I think some posts got crossed somewhere along the line . :crazy:
If not me.....Who ?
If not now ....When ?
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Re: Odyessy in "F" Open

Postby Just1Spark » Thu Mar 09, 2017 2:53 pm

Grindl wrote:

A few words about the 26" barrel length : I spent over a year doing ballistics research regarding barrel lengths , and though it has become very popular to now use 24" barrels , there are several pieces of data that has to be considered . One ; is the speed that "F" shooters are sending the round down the pipe . Many of the top "F" shooters are sending a .308 , 195gr-200gr VLD Match bullet out at 2,700fps to 3,100+ fps. Near "Max" loads . Hard on the chamber / bolt / receiver , as well as the barrel . The other is "Barrel Life". By selecting a 26" length , I will be able to reduce the FPS of the round down the bore , thus extending barrel life by 1,500 to 3,500 rounds over the normal 5,000 round barrel life . Target barrels don't "wear" out . They are "Burned" up by excessive high velocity loads and VLD bullet lengths . Friction and excessive heat are the enemies of Target barrels , but "F" shooters look at replacing a barrel several times through-out a season of competition as a normal part of the sport .

The 26" length , with a 10 twist allows me to load at the threshold of 2,700 fps and preferably below it .Well below it ... And keep the round stabilized in the trans-sonic range as the bullet slows down to nearing speed of sound . ( 1116 fps at S/L ) Ironically ; this occurs between roughly 850 to 930 yards with the normally used M/N target loads. The further the round goes , the more critical it becomes to keep the round stable , in rotation , and "on-line". Longer barrel lengths allow for lower powder weight loads ; while maintaining higher velocities without having to load towards maximums , thus reducing Heat and friction . VooDoo science. :crazy:



Sorry lol, Yup I misread the post. :thumbup:
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