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Freedom Munitions .233 Rem 55 gr FMJ muzzle velocity - Chronoed


flyfishdave

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Needed an excuse to hit the range today so packed up the Oehler 35P chrono, some rifles and ammo.

On their website, Freedom Munitions lists their .223 Rem 55 gr FMJ @ 3250 fps average. My velocities out of an 18" JP light contour, .223 Wylde, measured much less, so I'm thinking that their average might be from a longer barrel.

String 1:

2868
2891
2904
2864
2874
2884
2837
2896
2877
AVG = 2877
SD = 20
String 2:
2852
2879
2866
2864
2874
2863
2870
2880
2862
2866
AVG = 2868
SD = 8
String 3:
2922
2859
2882
2895
2872
2876
2892
2883
2876
2870
AVG = 2883
SD = 17
For all three strings, the average is 2874 fps with a SD of 17. I was shooting with a buddy and asked him to sling some rounds through the screens for some more data.
His rifle wears a 16" barrel, with a 5.56 chamber and was shooting Freedom Munitions .223 55 gr FMJ remanufactured rounds....not new ammunition.

2797
2769
2806
2777
2822
2926
2917
2905
2736
AVG = 2828
SD = 70

***his 10th shot was omitted from the data set. We both heard a softer 'pop' and the chrono registered 1521 fps, and the proof channel recorded 1022 fps and flagged that shot as a possible error***

Anyone have any other chrono data for Freedom Munitions .223 Rem 55 gr FMJ to share?

FYI, here's some chrono data obtained using the same rifle, but shooting Prvi Parizan 5.56 55 gr M193

3120
3169
3174
3150
3136
3142
3187
3173
3136
AVG = 3154
STD = 22

3165
3139
3173
3106
3159
3145
3181
3180
3126
3180
AVG = 3155
SD = 26
3227
3150
3142
3139
3200
3210
3200
3172
3159
3181
AVG = 3178
SD = 31

Using an SLR adjustable gas block, the 5.56 needed '8' clicks open and the .223 needed '7' clicks to lock the bolt back on an empty mag.

Because I fast-tracked this 18" build to replace a AKS-74U Krinkov SBR with 8.25" barrel which couldn't hit all the steel plates @ 200 yards before timing out (1st match at the FNH NHRPC/Topton 2-gun), for ghits and shiggles, I chronoed some 5.45 in the event I bring the Suchka out of retirement for a match. Also brought along a LWRC 5.45 upper that I forgot I had, NIB for like 3 years....

Silver Bear, 5.45 x 39, 60 gr FMJ

Krink, 8.25" @ AVG = 2356, SD = 20

LWRC, 14.5" @ AVG = 2804, SD =19

Figured AK-74/5.45x39 shooters might find the velocities useful.

17149662160_7c4e0b0698_h.jpg

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Thanks for the data! I've never chrono'd the FM 55gr reman loads but out of my 16" wylde chambered 1 in 8 twist barrel I've used the trajectory validation feature on Strelok vs. my actual drop at 400yds to calculate a 2900fps velocity. Those numbers have got me spot on dope out to 880yds, so either the velocity is really close or the B.C. is skewed in such a way that it just happens to be correct dope, which seems unlikely. I haven't actively shot 5.45 in a couple years now but I'm always interesting in seeing some actual data for it. Any chance you've ever chrono'd the Hornady 60gr V-max loads?

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Yup, the 5.45 V-max load. It always shot great out of my AK74, it was unusually accurate (2MOA or slightly better on good days) and it made hits on IPSC paper at 500yds way easier than silver/brown bear, wolf or surplus. Always wondered how accurate the velocity listed on the box was though.

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***his 10th shot was omitted from the data set. We both heard a softer 'pop' and the chrono registered 1521 fps, and the proof channel recorded 1022 fps and flagged that shot as a possible error***

Is this common with their remanufactured ammo?

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I've only shot less than 100 rounds of this new stuff so can't say much, but my friend has shot over 3K of their new and remanufactured (more reman than new) .223 and this was the first round that had an issue.

The std deviation of the reman seemed a little higher than the new, but we he only ran 9 rounds over the chrono......and not sure if shooting .223 in a 5.56 chamber would add to the variance.

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Minimum headspace dimensions are identical between 5.56 and .223 chambers. Max headspace is looser in a 5.56. The throat of the 5.56 chamber is longer and looser, but it shouldn't alter the velocity variance from shot-to-shot. I haven't had any "soft pops" with the freedom reman ammo, but your velocities track very closely with my experience in a 16" barrel

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Thanks for sharing your chrono data. I regularly shoot freedom ammo and I've been really curious if the velocity lives up to their claims. I've shot over a couple thousand rounds of Freedom's remanufactured 9mm and I've had 3 soft pops in total. Never had any problems with their new stuff.

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When I shoot new freedom 223 thru my AR (13.5" barrel) side by side with PMC gold or Prvi Parizan ammo, I have noticed the freedom drops more noticeably when pushing 200 plus yards.

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