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Posted: 6/16/2014 1:12:07 PM EDT
[#1]
The 77gr FGMM is far more accurate in my rifles than Mk262. For others it may be the opposite. You really need to buy a box of each to see which your rifle(s) like.
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Posted: 6/16/2014 4:16:51 PM EDT
[#2]
Larue stealth 1/8.
Mk262 is so-so, 1" groups at 100. Sometimes do better but not with consistency. |
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Posted: 6/16/2014 7:31:56 PM EDT
[#3]
Quote HistoryQuoted:
Larue stealth 1/8. Mk262 is so-so, 1" groups at 100. Sometimes do better but not with consistency. +1 on trying the other stuff............... Post your results.............. |
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Posted: 6/16/2014 7:54:12 PM EDT
[#4]
I think the Federal Gold Medal Match is a .223 loading not 5.56, I personally haven't ever seen it in 5.56 at least. I do know that the factory .223 match loads(FGGM 77gr,Privi 75gr,BH 68gr heavy) that I have tried seem to be a little bit more accurate in my rifle than the factory 5.56 match loads(MK 262,IMI razor 77gr). All are still way more accurate than I am.
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Posted: 6/16/2014 8:06:54 PM EDT
[#5]
Mk262 is designed for range more so then accuracy. That's why it's loaded so hot. That's why it's not gonna get stellar groupings.
I doubt many would report its the most accurate round they've used. It's good, many others are better. |
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Posted: 6/16/2014 8:09:03 PM EDT
[#6]
If you run the FPGMM on the Stealth, I would be interested to hear what type of grouping you got.
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Posted: 6/18/2014 10:52:25 AM EDT
[#7]
1. The MK262 is to 5.56 (or the original .223 to be accurate) chamber spec. Slightly looser and longer than a .223. Also higher velocity.
2. The Federal load is a match .223 (or really more of a match chamber since it was tightened from the original, and then people had to have a way to tell them apart) round. 3. There aren't any actual match 5.56 rounds... for a reason. 4. 5.56 is almost never as accurate as the tighter .223. Looser chamber, longer leade or throat. Exceptions exist, but while the M262 is a pretty accurate round, it's not made to be as accurate as the Federal. It's meant to put holes in the chest of people 600 ish meters away, not to make one inch groups at 600 meters. 5. Federal and others load the 69 grain Sierra Match King. May not hit as hard as the 77 grain at long distances, but a good accurate round, and good for those rifles that can't stabilize the 77 grain. |
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Posted: 6/18/2014 2:22:45 PM EDT
[#8]
Every rifle is different. Typically Mk262 will not be as accurate as true "match" ammo. But, I have two rifles that shoot the BH MK262 better than all other match grade 77HP rounds. Most other rifles give me so so 1.5"MOA with MK262.
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Posted: 6/18/2014 10:19:25 PM EDT
[#9]
In my Mk12 clone the only real diff I see is the FGGM is more consistent than the Mk262 ammo as far as groups go.
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Posted: 6/19/2014 1:02:07 PM EDT
[#10]
Like others said, guns are unique in their tastes. Privy match for me in my SPR is very disappointing(1.5MOA), FGMM is decent (1MOA), tailored load is good (.75MOA).
Some mass produced rounds like the FGMM's work 'well' in a 'lot' of systems and can work 'great' in many but there's just no guarantee how any given round will shoot in any given barrel. :( Sometimes you fall on one end of the bell curve, sometimes the other. |
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Posted: 6/23/2014 8:20:39 AM EDT
[#11]
IMI RAZOR should be another contestant, although technically it's just another MK262.
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Posted: 6/23/2014 8:58:58 AM EDT
[#12]
Quote HistoryQuoted:
Some mass produced rounds like the FGMM's work 'well' in a 'lot' of systems and can work 'great' in many but there's just no guarantee how any given round will shoot in any given barrel. :( Sometimes you fall on one end of the bell curve, sometimes the other. Right here. |
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Posted: 6/23/2014 9:02:22 AM EDT
[#13]
Quote HistoryQuoted:
IMI RAZOR should be another contestant, although technically it's just another MK262. If you want accurracy get FGMM, no reason not to for the price of the MK262 prices. MK262 trades off accurracy for speed and other military specific things like the crimped projectiles. |
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Posted: 6/24/2014 1:04:11 PM EDT
[#14]
FGMM costs more than mk262 and is more difficult to find IMO.
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Posted: 6/24/2014 1:13:33 PM EDT
[#15]
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Posted: 6/24/2014 1:14:08 PM EDT
[#16]
If you are worried about accuracy, buying inferior ammo is the same as flushing money down the toilet....
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Posted: 6/24/2014 9:02:48 PM EDT
[#17]
Quote HistoryCorrect. IMI RAZOR 5.56 MK262: 0.75 each, vs FGGM 77 grain $1 each. That's the best case scenario. I do realize FGGM is more accurate. IMI RAZOR mk262 |
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Posted: 7/30/2014 11:33:05 AM EDT
[#18]
Got the results in.
FGMM groups well sub-moa and about half the size of mk262 groups. The more shocking thing is how little recoil it has. It feels a lot milder. |
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Posted: 7/31/2014 12:34:52 PM EDT
[#19]
Ad_nauseum,
Can you clarify what ammo you are using when you did the test? MK262 is a US mil spec item. Are you testing that product or the Israeli 77 grain ammunition? Thanks, jeff |
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Posted: 7/31/2014 1:07:24 PM EDT
[#20]
Quote HistoryQuoted:
Got the results in. FGMM groups well sub-moa and about half the size of mk262 groups. Sub MOA? What were the actual size of the groups? The more shocking thing is how little recoil it has. It feels a lot milder. NATO spec'd ammo is usually hotter than match. |
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Posted: 8/1/2014 3:47:12 PM EDT
[#21]
Black Hills mk262.
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Posted: 8/1/2014 11:05:16 PM EDT
[#22]
Range = 165 yards.
FGGM 77 grain. 4 shot group: 2 shots touching. 3 opening up to 0.77", 4th opening to 1.2". |
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Posted: 8/2/2014 12:32:08 AM EDT
[#23]
Back when i built up an 18" SPR-style build, I bought a box of Federal GMM 77gr to get a baseline muzzle velocity with factory ammo, and frankly, that was a waste of money because GMM shoots way too slow compared to a 'real' 77gr load (in my eyes).
I posted a full report on the build with load testing here: http://www.ocabj.net/18-spr-field-rifle-build-report/ But the meat of it is, my standard 75/77gr load of 24.0gr RL15 in a LC case (and a Rem 7-1/2, CCI BR4, or Wolf SRM primer) that usually shoots 2750fps out of a 20" 1:7 service rifle barrel shot ~2700fps out of the 18" 1:7 SPR barrel (rifle length gas), while the Federal GMM 77gr shot ~2530fps out of that same barrel for a good ~150 fps difference in muzzle velocity. Out of a 20", the FGMM probably shots 2650fps, which is acceptable for 600 yards, but out of shorter barrels, the velocity is going to be lower than I want for mid-range. As far as accuracy, I know my load will shoot X-ring on the 200/300 NRA SR targets if you hold hard, and MK262 probably as hot as my load if not hotter. |
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Posted: 8/2/2014 9:08:02 AM EDT
[#24]
Quote HistoryQuoted:
Range = 165 yards. FGGM 77 grain. 4 shot group: 2 shots touching. 3 opening up to 0.77", 4th opening to 1.2". thanks for the info. Good shooting. |
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Posted: 8/2/2014 9:18:06 AM EDT
[#25]
Quote HistoryQuoted:
Back when i built up an 18" SPR-style build, I bought a box of Federal GMM 77gr to get a baseline muzzle velocity with factory ammo, and frankly, that was a waste of money because GMM shoots way too slow compared to a 'real' 77gr load (in my eyes). I posted a full report on the build with load testing here: http://www.ocabj.net/18-spr-field-rifle-build-report/ But the meat of it is, my standard 75/77gr load of 24.0gr RL15 in a LC case (and a Rem 7-1/2, CCI BR4, or Wolf SRM primer) that usually shoots 2750fps out of a 20" 1:7 service rifle barrel shot ~2700fps out of the 18" 1:7 SPR barrel (rifle length gas), while the Federal GMM 77gr shot ~2530fps out of that same barrel for a good ~150 fps difference in muzzle velocity. Out of a 20", the FGMM probably shots 2650fps, which is acceptable for 600 yards, but out of shorter barrels, the velocity is going to be lower than I want for mid-range. As far as accuracy, I know my load will shoot X-ring on the 200/300 NRA SR targets if you hold hard, and MK262 probably as hot as my load if not hotter. The part in red is one of my favorite loads as well. I ran out of RL15 and couldn't find it so I substituted Norma203b. The Norma203B doesn't shoot quite as tight of a group, but it is very consistent. I find I like slower velocities for 100 yard groups, but you're correct, you need a bit more velocities for the 600 yard group. I've sold all of my 18" and 20" ARs. All I shoot is 3 gun and a .308 700 5R in the occasional F class. The 20" was a safe queen. |
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Posted: 8/2/2014 9:40:11 AM EDT
[#26]
Pic added. To reiterate: Range = 165 meters, FGGM 77 grain. At 330 meters, it gets kind of 2.5" groups. Basically you can count on 3/4 MOA with it, it seems.
It seems 4th shot heated the barrel to the point of larger group. You can also see where it's not hitting the center, I am using the main crosshairs in the scope and not the 200 meter mark. Seems 556 has just a little more juice. 150-200fps velocity difference was my guestimate. It has also become clear you need better optics than an ACOG which handicaps you as it's not a precision tool. This 223 stuff feels like a 22 magnum compared to 5.56. 
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Posted: 8/4/2014 9:38:49 PM EDT
[#27]
Quote HistoryQuoted: The part in red is one of my favorite loads as well. I ran out of RL15 and couldn't find it so I substituted Norma203b. The Norma203B doesn't shoot quite as tight of a group, but it is very consistent. I find I like slower velocities for 100 yard groups, but you're correct, you need a bit more velocities for the 600 yard group. I've sold all of my 18" and 20" ARs. All I shoot is 3 gun and a .308 700 5R in the occasional F class. The 20" was a safe queen. |
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Posted: 8/5/2014 8:43:11 PM EDT
[#28]
Quote HistoryQuoted: I think the Federal Gold Medal Match is a .223 loading not 5.56, I personally haven't ever seen it in 5.56 at least. I do know that the factory .223 match loads(FGGM 77gr,Privi 75gr,BH 68gr heavy) that I have tried seem to be a little bit more accurate in my rifle than the factory 5.56 match loads(MK 262,IMI razor 77gr). All are still way more accurate than I am. |
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Posted: 9/25/2014 6:36:54 AM EDT
[#29]
I had 69 grain FGMM appear to be even more accurate than 77 grain.
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Posted: 9/25/2014 6:46:22 PM EDT
[#30]
every barrel is prejudiced.
My recce is a good shooter but doesn't like 69's in match ammo at all. Black HIlls. But it shoots the 68's and 75's real well. Your rifle could be really different than everyone elses. You just have to find out. It's possible to say it won't like MK262 as much as match ammo because the pressure is higher and that sometimes can cause a negative affect on accuracy. But it sure isn't a hard fast rule. Also, for some reason it would shoot the winchester white box 40 round value pack at walmart, like it was match ammo. I kid you not. But it wouldn't be something I would EXPECT to happen. |
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