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Posted: 8/25/2015 11:14:15 PM EDT
[#1]
I am tagging this because I have wondered this too. I seem to remember something about them using a proprietary powder that is not available over the counter and is used exclusively but I could be mistaken. I would think it to be true because if it was a standard available bulk powder everyone would be loading these rounds up themselves and the company wouldn't be able to sell the manufactured rounds as fast as they can crank them out. IMO of course. If anyone has any definite info on this I would love to know also.
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Posted: 8/25/2015 11:30:01 PM EDT
[#2]
I've read that the manufactures have powders which are not available to reloaders. Further, each lot of a specific ammo might not have the same powder but a powder which gives the same performance.
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Posted: 8/25/2015 11:42:31 PM EDT
[#3]
Quote HistoryQuoted:
I've read that the manufactures have powders which are not available to reloaders. Further, each lot of a specific ammo might not have the same powder but a powder which gives the same performance. Yeah, that is pretty much what I have read in the past. |
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Posted: 8/25/2015 11:44:08 PM EDT
[#4]
Quote HistoryQuoted: I've read that the manufactures have powders which are not available to reloaders. Further, each lot of a specific ammo might not have the same powder but a powder which gives the same performance. They use different powders that they pressure test to a certain value. Then that's the load for that lot of ammo. changes with the next lot. What a reloader can do is chrono the factory ammo and work up a load to the same velocity. |
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Posted: 8/26/2015 5:47:08 AM EDT
[#5]
Would it be a safe bet they are using 748? No. |
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Posted: 8/26/2015 7:46:37 AM EDT
[#6]
Try Reloader 15.
IMR4895 was the standard target load powder for many years. Always worked fine for me. |
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Posted: 8/26/2015 9:27:49 AM EDT
[#7]
Ammo manufacturers "work up loads" for every new batch. You might consider that they use lower grade powder than reloaders. I don't know that it's truly lower grade but it's not consistent from batch to batch like "canister grade" powders that we use.
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Posted: 8/26/2015 6:10:04 PM EDT
[#8]
Thanks for info, Will play around and see what I can come up with.. Next couple days I may have some time to just try some various charges of various powders I have on hand ( within my books of course ) and drag out the chrony next trip to the range. My gut feeling says the Win is a bit slower than GMM.
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Posted: 8/26/2015 9:35:47 PM EDT
[#9]
As stated above OEM use powders call NON-Canister grades of powder, while similar to say IMR 4895 it may not be the same exact thing. Translated, there is greater lot to lot variance in NON-Canister grades of powder then that destined to the LGS store shelves!
As stated, above also, what is good advice...Chron to benchmark and then find a powder that you match the velocity and you should be golden! |
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Posted: 8/26/2015 9:48:06 PM EDT
[#10]
Try Varget if you can find some
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Posted: 8/26/2015 10:15:15 PM EDT
[#11]
Quote HistoryQuoted: Try Varget if you can find some LGS has it.. I can pick some up this weekend. |
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Posted: 8/26/2015 10:18:14 PM EDT
[#12]
I think I have read that it is 4064 and that loads with it are closest to duplicating the GMM. Don't hold me to it but 4064 works well for me
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Posted: 8/26/2015 10:19:32 PM EDT
[#13]
MR4895 and H4895 started off as different batches of the 'same' powder.
Once they became 'canister grade' they have slightly different load data. Commercial reloaders (and the mil) buy powder by the multi-ton lot. They use a pressure receiver and ballistic chronograph to develop a loading that meets the specs for the cartridge. Then then load using that lot of powder until there is not enough left for the next ammunition batch. The remains of these lots occasionally show up from sources like Accurate powder company. Accurate calls the 'data' powders. They provide some suggested load data for cartridges the powder is suitable for. A hand-loader is left with working up a final load in their gun. The powder is less expensive than canister grade. It is not better or worse it just has more variation from lot to lot than canister grade. Powder manufacture is not that exact a thing. Even canister grade has some lot to lot variation. If you switch to a new powder lot your 'pet' load may need some adjustment. At the very least it needs to have a 'work up' repeated. |
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Posted: 8/26/2015 10:27:05 PM EDT
[#14]
5 shot group SSG69 100 yards
Shot by my nephew a few weeks ago. he was home on leave and wanted to shoot the SSG. after 3 shots, I decided to mess with him a little. Told him to pull the rear trigger first. (this sets the Set Trigger, that is about 10 ounces) He pulled it right a little, but not bad for never having pulled a set trigger before. lines are 1 inch The load Varget 44.0 grains Mil "Match" cases Nosler 168 grain custom competition seconds CCI LR primer My SSG likes bullets right up to the rifling (loaded long) 
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Posted: 8/26/2015 11:00:03 PM EDT
[#15]
I second 4895. It is our primary rifle powder for calibers over .223. Start with a listed starting load, and work up, and see how it does. We've had great results in 30.06, 308, 7.5x55 swiss, 6.5 swedish, and .35 Whelen. Varget has a great rep also in .308 and 30.06, but I never used it.
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Posted: 8/26/2015 11:27:13 PM EDT
[#16]
Quote HistoryQuoted: I think I have read that it is 4064 and that loads with it are closest to duplicating the GMM. Don't hold me to it but 4064 works well for me It does.. And out of my PSS It makes little cloverleafs all day, and even at 300y (furthest I can shoot at the range) 3/4" to 1" is pretty common. . Even out of the SSG, the groups are almost Identical, but no where near as good as the PSS. , |
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Posted: 8/26/2015 11:36:55 PM EDT
[#17]
Quote HistoryQuoted: 5 shot group SSG69 100 yards Shot by my nephew a few weeks ago. he was home on leave and wanted to shoot the SSG. after 3 shots, I decided to mess with him a little. Told him to pull the rear trigger first. (this sets the Set Trigger, that is about 10 ounces) He pulled it right a little, but not bad for never having pulled a set trigger before. lines are 1 inch The load Varget 44.0 grains Mil "Match" cases Nosler 168 grain custom competition seconds CCI LR primer My SSG likes bullets right up to the rifling (loaded long) http://i1002.photobucket.com/albums/af149/codesmith/5%20shots%20ssg69%20connor_zpsyulfdh75.jpg Nice! I have the 2-stage single trigger on mine. My Dad got his a couple weeks later with a double set trigger. I didn't think to check the OAL on this one, probably be a good thing to look at too. Thanks |
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Posted: 8/27/2015 12:04:58 AM EDT
[#18]
I use Varget. It's consistent, and I achieve great results with it and Sierra 168gr SPBT bullets.
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Posted: 8/27/2015 3:25:27 AM EDT
[#19]
Quote HistoryQuoted:
I use Varget. It's consistent, and I achieve great results with it and Sierra 168gr SPBT bullets. Same here. |
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Posted: 8/31/2015 6:33:15 PM EDT
[#20]
Back from range.
Tried a few different combos Varget 43g and 44g with SMK and J4 bullets with both 210M and Win WLP in new brass and neck sized brass. All seated about 5thou off the lands. Also did the same with 43g of IMR4320. Varget groups were all about 3/4-1" regardless of primer or brass. 4320 was a 1/2" with the 210M and a cloverleaf with the WLP.  SO it looks like slower powder is the way to go with this gun. I am happy with the 4320 group, but may even play around some more over the long weekend with some 4350, N150 and N540 |
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Posted: 8/31/2015 8:09:36 PM EDT
[#21]
IMR 4064 is the powder currently in FGMM 168/175.
Since Lapua 167s outshot FGMM 168s from my 308, I chose to go primarily with the 167s. IMR 4064 and N140 produce similar high-quality results for me with the 167s. |
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Posted: 8/31/2015 10:40:22 PM EDT
[#22]
Quote HistoryQuoted:
I use Varget. It's consistent, and I achieve great results with it and Sierra 168gr SPBT bullets. The batch I have makes a funny stench on the firing line. |
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