Warning

 

Close

Confirm Action

Are you sure you wish to do this?

Confirm Cancel
Member Login
Site Notices
9/19/2017 7:27:10 PM
Posted: 2/20/2006 7:46:51 AM EDT
Is this ammo made for the the 1/7 twist?

Im thinking its a long bullet?
Link Posted: 2/20/2006 8:02:38 AM EDT
I'd wager it was made for use in a 1/9 twist.
Link Posted: 2/20/2006 8:51:31 AM EDT
If it was made for a 1/9" bbl, wouldn't shooting it out of a 1/7" bbl make it fragment even more reliably due to the faster turn rate?

I have a 1/7 16" M4gery that I would love to stoke with some frangible ammo for in-house use. Right now, I have her loaded with 40g JHP rated at 3600fps. I'm hoping the light weight and high velocity will cause them to disintegrate in interior walls and the like.
Link Posted: 2/20/2006 8:59:41 AM EDT

Originally Posted By VaughnT:
If it was made for a 1/9" bbl, wouldn't shooting it out of a 1/7" bbl make it fragment even more reliably due to the faster turn rate?

I have a 1/7 16" M4gery that I would love to stoke with some frangible ammo for in-house use. Right now, I have her loaded with 40g JHP rated at 3600fps. I'm hoping the light weight and high velocity will cause them to disintegrate in interior walls and the like.



read
Link Posted: 2/20/2006 10:51:38 AM EDT

Originally Posted By thedoctors308:

Originally Posted By VaughnT:
If it was made for a 1/9" bbl, wouldn't shooting it out of a 1/7" bbl make it fragment even more reliably due to the faster turn rate?

I have a 1/7 16" M4gery that I would love to stoke with some frangible ammo for in-house use. Right now, I have her loaded with 40g JHP rated at 3600fps. I'm hoping the light weight and high velocity will cause them to disintegrate in interior walls and the like.



read



Better yet READ
Link Posted: 2/20/2006 11:01:08 AM EDT

Originally Posted By FMJ:
Is this ammo made for the the 1/7 twist?

Im thinking its a long bullet?



It's a really long bullet, Jethro. Someone posted a pic recently.
I've shot a bit of it thru my 1/9s.

What do you need to know?
Link Posted: 2/20/2006 11:04:21 AM EDT
[Last Edit: 2/20/2006 11:05:07 AM EDT by thedoctors308]

Originally Posted By Forest:

Originally Posted By thedoctors308:

Originally Posted By VaughnT:
If it was made for a 1/9" bbl, wouldn't shooting it out of a 1/7" bbl make it fragment even more reliably due to the faster turn rate?

I have a 1/7 16" M4gery that I would love to stoke with some frangible ammo for in-house use. Right now, I have her loaded with 40g JHP rated at 3600fps. I'm hoping the light weight and high velocity will cause them to disintegrate in interior walls and the like.



read



Better yet READ



Pictures are better.
I find it is easier to explain the penetration issue with pictures, rather than with the ammo oracle.
some people find it boring.
Link Posted: 2/20/2006 12:36:57 PM EDT
I didnt see the size bullet!

I know that a 1/9 can handle a 50gr bullet ! as could a 1/7
I thought I rember someone had key hole problems?
Link Posted: 2/20/2006 12:52:05 PM EDT

Originally Posted By FMJ:
I know that a 1/9 can handle a 50gr bullet ! as could a 1/7
I thought I rember someone had key hole problems?



You will not keyhole a 50gr bullet out of 1:7.

However the only practical use for frangibles are training in shoot-houses.
Link Posted: 2/20/2006 3:14:46 PM EDT
So this ammo made for the M16
Link Posted: 2/20/2006 4:47:30 PM EDT

Originally Posted By Forest:

Originally Posted By FMJ:
I know that a 1/9 can handle a 50gr bullet ! as could a 1/7
I thought I rember someone had key hole problems?



You will not keyhole a 50gr bullet out of 1:7.

However the only practical use for frangibles are training in shoot-houses.



One of my AR's is a 16" and it keyholes a 55 gr bullet at 100 yards.
Link Posted: 2/20/2006 4:56:52 PM EDT

Originally Posted By Jimmi:
One of my AR's is a 16" and it keyholes a 55 gr bullet at 100 yards.



Way too many of us shoot 55gr out of 1:7 twist barrels for such a statement to be even remotely representative.

If you're keyholing rounds your barrel has a serious problem with it.
Link Posted: 2/20/2006 5:53:03 PM EDT
Nope I am just telling you I shot some 55 gr Ammo and it keyholed at 100 yards. My weapon shoots fine with 62 gr ammo. The ammo happened to be wolf but I don't think that mattered. THe barrel erosion gage reads almost 3 witch is still very good. I have not shot 55 gr since.
Link Posted: 2/21/2006 4:40:46 AM EDT

Originally Posted By FMJ:
I didnt see the size bullet!

I know that a 1/9 can handle a 50gr bullet ! as could a 1/7
I thought I rember someone had key hole problems?



A 1/9 can handle a conventional 50 grain bullet, but the frangible is about as long as an ORANGE tip tracer. Stabilization would probably be hit and miss with the 1/9 twist.
Link Posted: 2/21/2006 4:45:05 AM EDT
The Federal reduced lead frangible bullet (40gr) loads I've shot keyhole in about 80% of the ARs I've tried them in. Don't think it's the barrels since all of the guns shoot fine with normal loads.
Link Posted: 2/21/2006 6:17:05 AM EDT

Originally Posted By DavidC:
The Federal reduced lead frangible bullet (40gr) loads I've shot keyhole in about 80% of the ARs I've tried them in. Don't think it's the barrels since all of the guns shoot fine with normal loads.



Most likely the bullets. The frangible material must be much lighter than a lead core. I was shocked to see how long the 50gr frangible projectile was.
Link Posted: 2/21/2006 10:01:31 AM EDT
MARKM THANKS!!

I was going to buy some to shoot out of my 1/9 and 1/7

I just buy some more M855 until the new Wolf M193 comes in?
Link Posted: 2/21/2006 10:03:26 AM EDT
BTW I new that bullet would be a LONG one!
Im not taking a chance on my 1/9
Link Posted: 2/21/2006 10:15:56 AM EDT

Originally Posted By FMJ:
BTW I new that bullet would be a LONG one!
Im not taking a chance on my 1/9



It wouldn't hurt anything. You'd just get keyholes at some point if it didn't stabilize.

I shoot the frangibles on my gongs close in so I have no idea if I'm getting stabilization issues. (all my barrels are 1/9)

Top Top