I posted this in the AR-15/ ammunition forum. I will hazard a guess that most Hometown readers don't get over there often.




Discuss among yourselves....

Lake City XM-193 55 grain full metal jacket:

Chamber pressure: 58145 PSI
Mean pressure: 58145 PSI
Maximum pressure: 63406 PSI
Minimum pressure: 59614 PSI
Range: 3793 PSI
Standard Deviation: 1062 PSI

Velocity: 3473 FPS
Mean velocity: 3473 FPS
Maximum velocity: 3492 FPS
Minimum velocity: 3443 FPS
Range: 49 FPS
Standard deviation: 16 FPS

11 rounds fired from a Hart 20 inch test barrel.
(1st round was a fouler and discarded from the sample.)
(Special note: Sample fired in a .223 chamber for uniformity of testing and the fact that many users fire this ammunition in .223 rifles.)

Accuracy
10 rounds in two five-round groups were fired from a 1 in 12 twist, 20 inch, Wiseman v-block test barrel. 3 non-recorded foulers were used in each test.
Accuracy measured at 200 yards with Ohler acoustic system.
(All statistics given for 200 yard measurement)

Group 1:
2.8 inches
Ballistic co-efficient = 0.246
velocity: 2734 FPS
Energy: 913 ft-lbs
Power factor: 150.4

Group 2:
3.2 inches
Ballistic co-efficient = 0..251
velocity: 2720 FPS
Energy: 904 ft-lbs
Power factor: 149.6



American Eagle AE223 55 grain full metal jacket:

Chamber pressure: 50300 PSI
Mean pressure: 50300 PSI
Maximum pressure: 51336 PSI
Minimum pressure: 49239 PSI
Range: 2098 PSI
Standard Deviation: 717 PSI

Velocity: 3261 FPS
Mean velocity: 3261 FPS
Maximum velocity: 3280 FPS
Minimum velocity: 3246 FPS
Range: 33 FPS
Standard deviation: 12 FPS

11 rounds fired from a Hart 20 inch test barrel.
(1st round was a fouler and discarded from the sample.)

Accuracy
10 rounds in two five-round groups were fired from a 1 in 12 twist, 20 inch, Wiseman v-block test barrel. 3 non-recorded foulers were used in each test.
Accuracy measured at 200 yards with Ohler acoustic system.
(All statistics given for 200 yard measurement)

Group 1:
3.4 inches
Ballistic co-efficient = 0.264
velocity: 2614 FPS
Energy: 835 ft-lbs
Power factor: 143.8

Group 2: (one flyer recorded)
6.2 inches
Ballistic co-efficient = 0.257
velocity: 2593 FPS
Energy: 821 ft-lbs
Power factor: 142.6


Wolf Polymer 223 55 grain full metal jacket:

Chamber pressure: 40389 PSI
Mean pressure: 40389 PSI
Maximum pressure: 43274 PSI
Minimum pressure: 36661 PSI
Range: 6612 PSI
Standard Deviation: 2134 PSI

Velocity: 3112 FPS
Mean velocity: 3112 FPS
Maximum velocity: 3155 FPS
Minimum velocity: 3087 FPS
Range: 68 FPS
Standard deviation: 24 FPS

11 rounds fired from a Hart 20 inch test barrel.
(1st round was a fouler and discarded from the sample.)

Accuracy
10 rounds in two five-round groups were fired from a 1 in 12 twist, 20 inch, Wiseman v-block test barrel. 3 non-recorded foulers were used in each test.
Accuracy measured at 200 yards with Ohler acoustic system.
(All statistics given for 200 yard measurement)

Group 1:
7.0 inches
Ballistic co-efficient = 0.241
velocity: 2395 FPS
Energy: 701 ft-lbs
Power factor: 131.7

Group 2:
7.2 inches
Ballistic co-efficient = 0.244
velocity: 2378 FPS
Energy: 691 ft-lbs
Power factor: 130.8



Silver Bear 55 grain full metal jacket:

Chamber pressure: 53727 PSI
Mean pressure: 53727 PSI
Maximum pressure: 57241 PSI
Minimum pressure: 50066 PSI
Range: 7355 PSI
Standard Deviation: 2504 PSI

Velocity: 3431 FPS
Mean velocity: 3431 FPS
Maximum velocity: 3485 FPS
Minimum velocity: 3383 FPS
Range: 102 FPS
Standard deviation: 31 FPS

11 rounds fired from a Hart 20 inch test barrel.
(1st round was a fouler and discarded from the sample.)

Accuracy
10 rounds in two five-round groups were fired from a 1 in 12 twist, 20 inch, Wiseman v-block test barrel. 3 non-recorded foulers were used in each test.
Accuracy measured at 200 yards with Ohler acoustic system.
(All statistics given for 200 yard measurement)

Group 1:
3.8 inches
Ballistic co-efficient = 0.221
velocity: 2643 FPS
Energy: 853 ft-lbs
Power factor: 145.4

Group 2:
7.2 inches
Ballistic co-efficient = 0.218
velocity: 2629 FPS
Energy: 844 ft-lbs
Power factor: 144.6

I have the results for Wolf 62 grain, but I'm waiting to match it against Federal's lowest common denomanator.
Federal samples are pulled directly from loader checks.
(For anyone that is interested. In the second American Eagle Group, if the flyer is removed, the 4 shot group is 4.2 inches)

And for the number junkies:
Temperature: 68 degrees F
Humidity: 59%
Altitude: 1000 feet
Barometric pressure: 29.20 in Hg
Wind speed: 1 MPH
Wind direction: 6 O'clock

Thanks For the Info Fed!!!!

Thanks FG,  good data.  I'll be interested in seeing the results for the 62gr Wolf, as myself and others have noted it to be more accurate.  I'd also like to see results for some FGM.

the Federal American Eagle isn't very accurate in my DPMS 20" bull barrel.....the LC XM193 and the Winchester Q3131A are very accurate..bought some Winchester 55 gr. fmj and also some Ultra Max to try out, don't expect much from those either............

How much ammo do you need to run the test?  I'm willing to give you a box of XM193 (lot 099) that I've got.

Quoted: How much ammo do you need to run the test?  I'm willing to give you a box of XM193 (lot 099) that I've got.

Thanks for the offer!
I have a box ready to go. I just need to free up the time at work to run the test.

Ahh I wasn't sure what kept you from running it.   Thanks for the data FedGunner.

Welcome back, Jack!

Quoted: Welcome back, Jack!

Thank you!


Good to be back.

bump for update

Thanks FedGunner!

Hey, quick question.  AE 223 ammo marked low P&V.

What is low P&V?

Thanks

Quoted: Thanks FedGunner! Hey, quick question.  AE 223 ammo marked low P&V. What is low P&V? Thanks

Low pressure and velocity.
No prob in a bolt gun, might pose a risk of stoppages in an AR...50/50 chance
I picked up some low p&v 9mm   It would not cycle a MP5.
ymmv

Power factor.

Can I translate this into knock down power?

Quoted: Power factor. Can I translate this into knock down power?

Actually, I believe it is for IPSIC type calculations.

Quoted: Power factor. Can I translate this into knock down power?

Oh no you didn't

Oh no you didn't

Ahh..  I did?  what did I do?

Quoted: Oh no you didn't Ahh..  I did?  what did I do?

Use the phrase "knock down power"

I can't help but wonder why wolf is so much slower...other than amount of powder.

I NEVER put it into my DPMS, but, my Mini-14 recieves a regular diet of that and Win white box and never had an issue.

My DPMS has a new home...but...one may be in the future.

bump for update