Hornady 6mm creedmoor brass

#51

Oh no doubt a 243 is great. I just wanted the room for a gas gun to and have quite a few buddies running the 6mm creedmoore so I went with it. I mean the gun shoots lights out and makes me look like I know how to shoot. I've got some federal gold medal 210m primers I'm loading up now to see if that makes a difference. They all measured the exact same though but a measurement befor hand isn't always going to be the tell tell truth. The Cci 250's have been my go to since I can get them locally and have tons of them. Bottom line is if the pockets are growing to 0.2095 or above then the primer will be semi loose. 15% of the primer pockets are at 0.2095 or larger which compared to my federal 308 brass that has 20 firings measures 0.2065 and those are some very hot loads with the same primers. I'll measure the new brass when it comes in. I have access to a Hart tool to reform the primer pockets but it's not worth the time. I'll have to double check some of the above measurements since I have a house full of 12-13 year old girls running around since school are out due to the possibility of snow/ice again. Lol

Sent from my DROID RAZR HD using Tapatalk
 
#52

I don't care if I load the thing to case max the primer pockets shouldn't grow that much. I have plenty of friends running 243s, 6xc, 6x4or whatever and 90% are way above the "max" listed charge but all worked up from a very small charge. Each gun is different, this loaf may blow up in someone else gun or only pull 3k fps. I'm not comparing mime to anyone else's load data. Mine is just what it is, a load that I worked up to (this was middle ground and the most accurate by far) and saw no signs of pressure. Primers looked just like my subsonic reduced loads after shooting this load. Primers are usually the first place I notice pressure but maybe I'm mistaken and there is somewhere else that I overlooked. I'm very careful and picky about my loads so if it shows pressure signs I go back down to the next accurate load and fine tune that. I'm leaving this one as is though and will deal with the brass whether it's bad or great I need the performance I'm currently getting. With my 308 I'm over edit:3 full grains above max listed load and push a 185gn juggernauts or vld to 2705fps with a 20" barrel. Not bad if you ask me but it's in a safe range for my gun, primers pockets on that cheaper federal brass is still tight as the first firing for the most part unless they are literally nearing the 20th firing then yes they get loose and get tossed. No way in hell I would ever give that to someone else and expect them to shoot it in their setup. A buddy shows pressure signs in his gun at 2.5gns under what I run so it wouldn't be a good thing running my loads in his gun. I still believe the primer pockets on the 6mm creedmoore brass should last a little longer even with hot loads. I'm done with it though. I'll keep buying more from GAP and just consider it a consumable that has a very short life. I'll go to 6x47l next and use lapua and guarantee I could blow the damn case up and the primer pockets would hold another primer, albeit a small rifle primer which is fine with me.

Sent from my DROID RAZR HD using Tapatalk
 
Last edited:
#53
My load will be 42gr H4350 with 105 Hybrid. That is where I hit an accuracy node. not sure of velocity but will get some numbers as soon as the weather clears a bit. I am running a 26" Bartlien 7.5 twist. I originally wanted to shoot 115 DTACs thru this but I think the Hybrid has changed my mind. No issues yet on primer pockets. I already shoot two different 6.5CM and have not had problems there either. Probably a little lower pressure curve though.
Accurate Ordinance did mine too. Great guys to deal with.
 
#56


6x47L...You rang???

7 years now since I bought 1000 6.5x47L brass which has been used in my 6x47L's. I just had the 4th heavy barrel and 5th which is a lighter barrel made up for my MAK. I sold 200 brass with a benchrest rifle, lost about 80 of them in matches and two brass I threw away from a loose primer pocket from some evil hot load experimenting way back when. All the rest have been reloaded so many times I lost count a long time ago.

Sorry man, I wouldn't wish your problem on anyone!
 
#58
Yeah, as a comparison, I'm also running a 6XC bolt gun at 42.2gr of H4350 and it purrs with zero brass issues. Nonetheless, the 6 Creed lets me shoot in comps the same platform that I enjoy shooting most: my 308 gas gun. I just wish the brass was better. Man, if Lapua, Norma, or even Winchester made some 6 Creed brass, I'd be all over it. Or, if Hornady just figures out a way to make their current offering stronger, that would certainly work as well.
 
#59
That's me man. I want to be able to have the second round down range befor the first hits! Sometimes though I just need to slow down and a gas gun just makes me want to go faster for some reason.

Sent from my DROID RAZR HD using Tapatalk
 
#60
aj it would all come dn to the accuracy of the fireforming load. if I could find a load that pushed 105 hyb 2950 and shot in the .3's id be happy with that. that scenario would most def. be the best hands dn. update the thread, ima 243 guy but id sure be curious about the data.

8 clicks elev. and 2 clicks of wind prob not gonna be a game changer but you didn't pick a 6 to be driving miss daisy either
 
Last edited:
#62
I found this in a thread from last year titled, 6XC vs 6mm creedmoor. I'm just wondering what has changed in brass quality since these quotes were made? Has there been several runs of 6 creed brass & are the primer pockets just sub par in the latest batch? I'm having twins built as we speak on bighorns/Bart/kmw sentinel for my wife & I to shoot. This thread is making me nervous about having 500 pcs of potentially subpar brass.




Just to clarify, Mike was referring to 6 creed & hornady brass, not 6 comp match.
 
#64
That's what I saw also which gave me some hope. I tried calling Gap to see what their though on it was and also to try to get some info on a gap 10. I know they are busy so ill patiently wait for their call. They are good people and I know they are busy as hell. I'll try some other primers if I can get them locally or wait until someone makes an order. I have tons of powder and other primers but not wolf or tula. I'm loading federal gold medal 210m and some Cci br primers now to check tomorrow after firing but the brass already has one firing on it. I did chose the best 20 of the brass I had to try so hopefully I'll see an improvement.

Sent from my DROID RAZR HD using Tapatalk
 
#67
I ordered as many as gaps website would let me that other night. Maybe it will be enough to get me through this barrel with what I have. I also have some 6.5 creedmoore brass as well that I could easily neck down so I'm good on brass count just not on the number of times I can reuse the brass.

Sent from my DROID RAZR HD using Tapatalk
 
#69
Is it just the 6mm Creedmoor stamped brass that people are having the primer issue with or is the 6.5 CM stamped brass effected as well? I could be wrong (more than likely) but don't the majority of the 6mm CM shooters just neck down the 6.5 CM brass as it is more readily available and just neck size it down?
 
#70
I think most most of you guys getting bad brass life have a .236 bore. and your using load data thats out there for .237 bore rifles. .237 is SAMMI and 42.2 is about max. Guys shooting 42.6 are at about 68,000PSI and yes it will yield you a couple loadings and trash the pockets.

41.5 to 42 of H4350 should give you 5-7 firings.

also check your freebore you should have .175 to .199 FB

there are alot of reamers that are out there that are way too short and also cause pressure.


Hope this helps
 
#74

Ill have to call Mark at AO to see what my bore actually was when they built it but I seat to the same COAL (2.730) with the hybrids and by my sharpie trick calculations 2.745 puts me on the lands or maybe it was 2.755, Either way the load works and I really don't care how far I'm jumping them since they like it. Its accurate as hell and SD and ES are very very low which is what I like so Ill run it and change once I burn the barrel out on this one.

Thanks George for the input. I tried calling today but know you guys are busy. I was wanting to know if you guys can build a 6x47L Gap10? I had my mind set on the 6mm creed but not now. Even with lower pressures the brass just isn't lasting to what I would like to see. I know the Lapua brass will last with me pushing it hard.
 
#75

actualy he got two of my rifle in hand including this 6creed..to rethroat it i told him the problem i was having..loosing brass and not getting great fps.41.80 i was only geting 3012.so he ordered throater coz he realised reamer was actualy short FB.i sent him 3 dummies 2 2.80 as "go round" and 1 2.81 "no go" hes also a member here and im pretty sure he's reading this post:)..one more thing is there anything wrong on tight neck .273? i turned neck and measured loaded rounds 270-271.5
 
#76
Hornady 6mm creedmoor brass

The small primers will crater bad in a gas rifle. But yes it will function fine.

With a 237 bore and the correct chamber the Hornady brass works well. You can't push the 6 creed much past 3000 in a gas gun. Mine has 2800 rounds on it and brass life is great.
 
Last edited:
#77

sound like we both getting same prob..george got the fix!you need to redo your throat otherwise youll get a lot of preasure even with mild load..that will eat your brass not to mention barrel. i did a litle review about my creed here in while..and it is accurate too..but i still not happy with the pressure and low fps..youll have to max load to get to 3100.on my book something is not right..good luck!
 
#79
Thanks George. I'll have another barrel made up and have it throated a little longer and see if we can do something about this one during some down time. It also makes me feel better about going to the 6mm creedmoore gas gun setup. I will be in contact about getting a gap10 started unless you have one on the shelf waiting for credit card info :) please don't say yes because my wife would stab me with it. Lol

Sent from my DROID RAZR HD using Tapatalk
 
#80

2.752" 105 hybrids at 3150 fps out of a 30" Krieger with 43.1 grains of H4831SC. That's where the rifle shoots best and square in the upper node.

My old load with 115 Dtacs was 3005 fps with 115's out of a 26" Schneider but 2.8??"
 
Last edited:
#81

Hi George, thanks for offering some help. I've got one of you Gap-10 upper with a 23" barrel running 41.3gr of H4350 with the 105 Hybrids. I'm having the same loose primer issues that others are having. It seems by your past couple posts that I am at the top end pressure for a gas gun, correct?
 
#82

Please sell me that piece of junk gun to me. I will deal with my wife if someone had a 6mm creedmoor Gap 10 with a 22-24" barrel ready to go. I have a few nice optics to trade :) well a stiener 5-25x56 with MSR reticle plus cash.

I'm very glad to have people like George who has reasons behind the known fact of its a hot load. I can deal with that because I now understand it better. I guess I'm used to my 308 and being able to put enough powder in it that I can barely seat the dang bullet and it still not mess up the primer pockets (it's not that full but it's a sure enough hot load)

This snow/ice junk we are getting has Atlanta shut down I'm assuming so the guys from AO are probably at home. I'm wanting to see if they noted the bore and reamer info. I'm sure they did since they gave me every other spec on it and they are very meticulous about their work. I just finished loading 200 more and these were not nearly as bad as the first batch I went though. They were not tight tight but no were near loose so maybe im going to have to sacrifice a few pieces of brass to keep the performance where it's at now. I'm good with that also as long as I can still keep buying it from GAP. I know the 1k and 500cnt were sold out so I bought as much as the 100 quantity options would let me. G

George when will there be more available?

Sent from my DROID RAZR HD using Tapatalk
 
#84

Haha, I searched long and hard to find this beautiful piece of kit! It's been a good shooter so far, just wish the brass issue would go away. Nonetheless, this is a comp gun so who cares if I lose it? I am going to give some FGMM primers a try.
 
#87

I've got 100 loaded with the federal gold medal 210m primers now also. I don't know how they compare to the Cci 250 magnum primers but the chrono will be the tell tell I guess. Well that and the primer pockets. I'm going to try to hunt down some tula or wolf primers since many are saying they will be a little tighter. If you decide you want to get rid of the gap10 please let me know first. I don't know if I can wait 9 months to a year if I'm pulling the right lead times for Gap to build one. I'm that instant gratification type of person. I want it yesterday! Lol.

Sent from my DROID RAZR HD using Tapatalk
 
#91
^^^
It's a bolt rifle. It's being finished as we speak.

Bartlein 1.8 twist, 27.5" straight taper to 1.01" [MENTION=34665]Muzzle[/MENTION]

Bighorn tactical SA

Rock Solid chassis

I just want to be sure this is a good reamer that would blow primers....if not I would need to start over
 
#93

No flattened primers here either and no other signs of pressure besides the brass not wanting to hold primers after a firing or two. I'm just going to accept that for the performance I want out of it that is verified to be probably the most accurate gun I've shot the brass becomes more of a consumable than it was before.

Sent from my DROID RAZR HD using Tapatalk
 
#94
Irokcrawl, I am having the exact same problem as you're having with your 6 Creedmoor brass primer pockets. I was shooting 42 grains of H-4350 @ 3168 fps and my brass was only lasting 1-2 firings. However, the load is extremely accurate! I have since dropped my load to 40.2 of H-4350 @3045 fps. Still very good accuracy. I hope this solves my problem of loose primer pockets, as I have gone through several hundred pieces that are now junk. I also though I read some where that NORMA is going to make 6.5 Creedmoor brass.

On another note, How difficult is it to make 6.5x47 Lapua brass into 6x47 Lapua? I too love the Lapua brass which last forever. I thought about the 6XC, but that brass is as rare as hen's teeth!
 
#95
6x47 is made the same 6mm creedmoor is. Take the 6.5 variant and neck down. After doing some research 3000fps or so is where the 6x47 like a to be ran at. I measured some 6.5x47 cases and they are a good bit shorter than the 6mm creedmoore cases. I'll go to a 243 (perfectly fine with me) before I mess with a slower round. I have a 308 for that..


Sent from my DROID RAZR HD using Tapatalk
 
#97

I'm sure your right and they can push them without worrying about the brass. After talking with a buddy who runs and makes them. (Tooter at Maredith rifles) I'll probably stay with 6mm creedmoor. He actually advises people to go 6x47l but says they are inherently accurate around 3000fps or so. Maybe I'm sweating that extra 150fps a little/lot to much. I messed with the seating depth to see if I could get the pressure on my setup to drop a little. 5 reloads and I'll be perfectly fine with the 6mm creedmoore brass at this point. I'm going shooting today and have a match tomorrow which will put some brass on their 3rd reload albeit with some loose pockets.

Sent from my DROID RAZR HD using Tapatalk
 
#98

I don't think so.

My experience with 6mms is they really kick ass at high velocity, and they're lame at low velocity (3000fps isn't "low"). Not to say you can't do some good shooting with a 105 Berger at 3000fps, but if you configure a high velocity 6mm for PRS-type rifle matches, it really ought to hit the speed limit of 3150.
 
You must log in or register to reply here.
Top Bottom
Back
Home
Forums
Merch
Alerts