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2/7/2003 8:48:26 AM EDT
1. what brand and bullet weight does the military use for there 1/7 twist ?
2. i have a barrel thats colt 1/7 twist 16 inch "military style" spects i think... what grain should i use ?
3. i have some 45 grain varmit at 3600 fps are those ok out of a 1/7 twist --i belive not--but has any one tried it ?  

i know that heaver grain s better but.......

thanks for all info i recive --little ahead of time--- but i know i will recive good input thanks guys
2/7/2003 8:52:06 AM EDT
[#1]
note ------- the varmit rounds are jacketed hollow point i have a muzzle break on the end of the barrel will these expand fast enough and get caught in it the muzzle break is only 2 inches-----
2/7/2003 10:47:51 AM EDT
[#2]
1.  62 gr. with steel tip  (See [url]www.ammo-oracle.com[/url] for more info.)
2.  Anything you want, but 55gr & up will probably work better than the really light ones.
3.  Probably OK, but I haven't tried them in a 1/7" barrel.  And I doubt they're really 3600fps.

Edited to add:
Hollow-points don't expand until/unless they hit something soft.  So unless the 45gr comes apart from centrifugal force there's no way it could touch the brake, and probably not even then.
2/7/2003 2:31:02 PM EDT
[#3]
1. The Military (U.S. I assume you mean) uses M855.  See the FAQ.  Specifically:

[url=http://www.ammo-oracle.com/#milammo]Q. What types of ammo has the US Military used in its M16s and M4s?[/url]

2. What is the purpose of the round you are trying to find?  Self defense?  Fun?  Plinking?  Long range accuracy for competitions?

3. Lighter rounds might have issues with tight twists.  The only way to know is to try it out.  45 grain rounds are NOT good defensive rounds.  Keep that in mind.

You'll probably get a lot of this answered if you visit the Ammo Oracle (The AR15.com Ammo FAQ).
2/7/2003 3:14:14 PM EDT
[#4]
It really depends on what you want to do with the round. If you want something for use in varmint hunting, about any of the 50-55 gr HP's, SP's, and polymer rounds should do. Many people claim the 45 gr ammo in the Winchester value line-up shoots very well from their rifles. If they will work in your's, then it should make a great varmint round. Just try a few before buying any in quantity.

If you are looking for something to use on larger game, such as deer, then give the Winchester Supreme Power Point Plus 64 gr loads a try. While the .223 is often considered a bit small for deer, I do think this is the load you want should you choose to use that caliber for such purposes.

If you are looking for a good self-defense round or longer range target load, I would give the heavier BTHP match loads a try. One of the best for this purpose is the Black Hills 75 gr. The 69 and 77 gr SMK's also available from Black Hills are no slouches either. And if you are concerned with shooting through barriers such as windshield glass, the Federal Tactical bonded 55 and 62 gr loads may be what you want. This is basically the same load as the Federal Trophy Bonded Bear Claw which is much easier to find.

Now if these loads above are too expensive for your wallet and you would like a good round for general purpose use, try the M193 loads currently available. These are the Federal XM193 and Winchester Q3131A. Again, some of the other specialty ammo types may be better for a given application that M193, but M193 will do lots of stuff for you.

Try these websites for the various rounds:

Black Hills - [url]www.georgiaprecision.com[/url]

For M193, Winchester Supreme PowerPoint Plus, Federal Trophy Bonded Bear Claw, and varmint loads look at:

[url]www.natchezss.com[/url]

[url]www.sportsmansguide.com[/url]

[url]www.ammoman.com[/url]
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