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Posted: 8/12/2023 11:45:23 AM EDT
[#1]
Assuming you mean both their 55gr loadings, and based on their descriptions, the X-Tac has a higher MV (3200 vs. 3270), and it would imply that the X-Tac is "duty" grade and has tighter quality control standards over the Bronze, which is their range/plinking line.
The bullets themselves have the same stated dimensions and ballistic coefficient, so they're probably the same. |
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Posted: 8/12/2023 11:52:24 AM EDT
[#2]
Sounds good. Thanks for the clarification.
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Posted: 8/12/2023 12:07:03 PM EDT
[#3]
No, they are not the same and they both fail to meet the US mil-spec for M193.
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Posted: 8/12/2023 12:24:36 PM EDT
[#4]
Quote HistoryQuoted: No, they are not the same and they both fail to meet the US mil-spec for M193. ... Muzzle velocity? Dimensional tolerances? Something else? |
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Posted: 8/12/2023 1:28:24 PM EDT
[#5]
Bronze seemes to be more gassy shooting suppressed (at least IME). Not blast you in the face gas, but that shit that drifts up in between strings of fire. Not a big fan of it with the can. I dont notice that with X-tac. Haven't had any failures with either.
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Posted: 8/12/2023 8:23:24 PM EDT
[#6]
Bronze is .223 and X-Tac is 5.56
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Posted: 8/12/2023 10:40:05 PM EDT
[#7]
In my experience PMC 55gr Bronze tends to be an economy load... and for me it is a standard for testing functionality with lower powered ammo in my various AR's.
That said the PMC Bronze .223 has been plenty reliable... going bang every time. The PMC X-Tac line in 5.56 does have more uuumph. My example... from my older chrono data. Newer production ammo may be different. PMC 55gr Bronze....................PMC 223 REM.......16"barrel....Av. 2626 , ES 82........20"Barrel ....Av. 2754 , ES 97........................ Just awful accuracy PMC XTAC 55gr......................PSD 14..................16" Barrel.....Av. 2994, ES 33......20" Barrel...Av. 3180, ES 72..........................Clearly crimped and sealed. Outstanding accuracy I would buy the X-Tac over the Bronze. |
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Posted: 8/13/2023 1:09:24 AM EDT
[#8]
i chrono’d several variants of 5.56 a couple weeks back. x-tac was hands down one of the worst performers. to me it’s really nothing more than a plinking ammo. just to give you some info..
this is out of a 14.7” AR with a yhm t2 suppressor. x-tac 55gr - 2875 igman 55gr 223 - 2890 imi 55gr - 2926 winchester white box 223 - 2992 ppu 55gr - 3035 imi 855 62gr - 2857 hornady frontier 75g - 2652 aac 75gr bthp - 2662 aac 77gr bthp - 2539 aac 77gr tmk - 2611 speed isn’t everything, but my groups opened way up with x-tac too. i’m not the best shooter, but it was quite noticeable of a difference. you may see different results in your gun, but i haven’t heard great things from others regarding x-tac either. |
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Posted: 8/13/2023 2:23:02 AM EDT
[#9]
IIRC X-tac is crimped/sealed primer and just annealed instead of polished. In my guns X-Tac is hotter, but less consistently so. Bronze has marginally more consistent (but lower) velocity, and slightly more accurate.
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Posted: 8/13/2023 1:23:24 PM EDT
[#10]
Quote HistoryQuoted: Bronze is .223 and X-Tac is 5.56 X-TAC is not a 5.56 load. Look at the data that bfoosh06 posted. PMC Bronze 55 Grain FMJ I evaluated the accuracy (technically, the precision) of the PMC Bronze 55 grain FMJ ammunition using my 20” stainless-steel Lothar-Walther barreled AR-15. This barrel has a 223 Wylde chamber with a 1:8” twist. Three 10-shot groups fired in a row from the bench at a distance of 100 yards had the following extreme spreads: 2.22” 1.82” 2.15” for a 10-shot average extreme spread of 2.06”. The 30-shot composite group had a mean radius of 0.72”. Unfortunately, my cocker spaniel chewed-up my chronograph data for this load.  The smallest 10-shot group . . .  ..... |
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