| Posted: Wed Nov 18th, 2009 02:23 PM |
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Hammer
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For a moment we are not working up a load.
We are trying to compare two existing loads and actually determine if one is better than the other.
We have selected three key measures.
Five-shot group size at 200 yards fired from bench and/or prone with sling and front rest.
Velocity.
Pressure by observation available to the home hobbyist.
Several rifles, but not necessarily all involved rifles, are available for testing. All rifles are chambered for the same round though some barrels are factory and some are aftermarket, e.g., Shilen.
The ammo and time involved for testing are available within reason.
The decision will affect the purchase of several more cases of one or the other ammunition and/or components for use by several folks in a variety of guns including ones not yet purchased.
How would you go about making the decision of which ammo is preferred before you spend the funds of your wife's brother-in-law for the upcoming purchase ?
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| Posted: Wed Nov 18th, 2009 03:55 PM |
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2nd Post |
Don Fischer
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You'll probably find that different rifle's like different ammo. I don't believe there is any best ammo, just different. Well there is no best ammo so long as you choose a proper bullet for what you want. If your wanting to test the ammo in specific rifles I'd forget the prone position and nuse a good rest on a solid bench. Remove as much as the human error as your can. If you don't then you won't really know which rifle shoot's what ammo best but rather how well you shot that one group whit what ammo. Once you bench test the stuff and your sure what the rifle likes then it's time to see what you can do without the rest, you'll know what the rifle can do then!
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| Posted: Wed Nov 18th, 2009 11:31 PM |
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3rd Post |
fryboy
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somebody else's money ? spend it lolz actually all kidding aside if ur buying ammo say in a popular caliber google it six ways to sunday try it plain then add best then add great them most accurate etc ,sadly u'll still have to glean thru opinions but if one uses common sense and forethought there's alot of stuff written out there waiting to be found ( including lots we dont want to know lolz )herein lies the rub every rifle barrel is different , this one may love black hills gold but two others may not or vice versa ,this is part of the reason so many reload ( to find the best ammo for a particular barrel) one does have to look at ammo like a woman does a man and just so u know quite often identical twins have far different taste in men ditto for rifles and ammo ,that factory barrel may be a bit sloppy and the non factory maybe tite ( or vice versa) those two barrels wont shoot the same but some rounds are pretty forgiving such as the 308 win ,all u can do is find what one rifle or another likes best but u should try to remove as much operator failure as possible so i have to agree with don ie; use the best solid rest u can oh and have fun
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| Posted: Thu Nov 19th, 2009 02:42 AM |
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Dragon88
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I guess it depends on what you are looking for. The military expends many thousands of rounds for tests like this when it is searching for a new load or cartridge. Some examples of criteria I would consider:
Target load:
Smallest possible group size with consistent POI as an average across all rifles tested
Moderate pressure to extend brass life
A velocity that hits a "node" with maximum accuracy and minimum deviation shot to shot
Functional load:
Meets or exceeded accuracy standard in all rifles tested
Predictable cold bore shot POI
Sufficient energy at maximum effective range of weapon system
Sufficient velocity to achieved required trajectory for sights, scopes, and operator adjustment
Any pressure up to maximum as long as there are no extraction problems
Case sized to allow tolerance for field conditions, i.e. dirty weapon or grime in chamber
...and lots of other stuff, anything that is important to you for your intended purpose. You might consult magazine articles on your rifles or cartridge, might give you a place to start and save you some $$$ in boxes of ammo.
Have fun.
Dan
Last edited on Thu Nov 19th, 2009 02:43 AM by Dragon88
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