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**6 Creedmoor**
- Thread starter Sportin Wood
- Start date
if i was worried about barrel life i would run my BR or BRX which i do shoot both...you see id rather shoot a fast 6mm and not worry so much about making perfect wind calls and yes im not bad at calling wind but at 3230 it takes a 13mph full value for me to have to hold off a coyote at 850yds so anything inside that im going to hit unless i have a seizure.
our range is tough to make good wind calls...our range is actually in a big valley and you shooting into a mountain where some of the targets are in valleys...ive seen the wind blowing 20mph straight at your back on the line and nothing at the 850 coyote...from the left at the 425 crows and from the right at the 550 rabbits....when its windy the trick is to try and wait until someone else shoots.
also this is not my first 6 creed...its actually my 6th barrel...5 of those barrels i ran at 3025 to 3070 and 1 barrel went 1700 rounds the rest all started throwing flyers between 1300 and 1500...all with 4350.
and im not running a shit load of powder in this gun....i started at 3230 with 41.5g of H4350 and at 400ish rounds id lost 25-30fps so im at 41.9g now and 3215ish....next jump will be to 42.1-42.2 and ill run it there until it start throwing flyers...you see i went into this fully knowing this barrel was only going to go about 800-1000 rounds.
You posted your rifle and load data. To get 3200+ FPS velocity with a 28" barrel and those components you need to run between 68k and 75k PSI of chamber pressure. You're close to proof load pressure.
At 75k I’d be having brass issues...6 loads tight pockets and I have NO hard lift sticky bolt or any other issues.
I’m not saying your wrong but without pressure trace equipment we do not know where pressures are.
Now I'm going to have to measure what I've lost, I'm running h4350 and right around 3100 with 300ish rounds through the barrel
You're kidding yourself. You don't get velocity without pressure. Your chronograph is clearly telling you you're majorly over P Max. Whether your brass is blowing out or not is irrelevant.
This IS my first Creedmoor, so I don’t know it’s nuances and how barrels behave over their life and what velocity/barrel life actually is.
the first .005 go pretty fast then it will slow down a little then start going fast again...i checked again after our match today and with the 48 i shot last weekend and the 46 i shot today theres another .010 gone...last weekend i was at 2.180 touching now(with the same bullet)im 2.190.
keep it sane and it will go 1500 plus or minus a little..maybe more depending on your accuracy expectations.
the 6CM is a fantastic cartridge and easy to load for...if you want better barrel life take a look at some of the smaller 6mm's.
Staying with 40.4 gn H4350/105 Hybrid @ 3035 FPS
AVG .50 MOA at 300, not sure if I should strive for more accuracy but I’m not a 1/2MOA positional shooter & would like to actually start practicing with this platform instead of getting sucked into perpetual load development.
ES & SD are a bit high, but I’m fine with it unless I start dropping hits out of the top/bottom at distance.
AVG .50 MOA at 300, not sure if I should strive for more accuracy but I’m not a 1/2MOA positional shooter & would like to actually start practicing with this platform instead of getting sucked into perpetual load development.
ES & SD are a bit high, but I’m fine with it unless I start dropping hits out of the top/bottom at distance.
I chronographed each 5 rnd group posted above & analyzed them as individual groups.
9.1/20
6/15
9.8/22
9.1/20
6/15
9.8/22
MPA Curtis Axiom, 26 in MPA/Spencer barrel with 144 rounds total fired. 8200 DA. Once fired neck turned Lapua brass, Federal 205M primers, Berger 105 hybrids seated 90 thou off, 40.8 gr RL 16, 3117 fps, ES 22, SD 6 over 20 rounds fired, 0.33 moa 5 shot group at 200 yards. Guess I will call it good there.
New remage 26" 7.5t Bartlein from Craddock Precision arrived last week. The reamer used has a .220 freebore. I ordered 200 rounds of Berger 105 ammo since I needed lapua brass and put 60 rounds through it last week recording my dope and gathering data for yesterday's PRS regional match. Shot the match and finished 7th, so it's a shooter for sure.
Today found me loading and testing my once fired, then annealed brass with 115 Dtac's seated -.030 from the lands while using H4350 and CCI SR mag primers.
100 yard velocity test, 2 shots each in .2 grain steps +/- 0.02 of a grain or one kernel of powder.
Pretty strong indication of a node between 39.9 & 40.1 (also 41.1-41.3 but I'll stick with the lower one for now) I loaded up 39.8 - 40.1 in one tenth steps, this time 5 rounds each and headed out for the long range.
These are all at 700 yards
First up 39.8, 1st shot I overestimated the wind and it went a little wide.
39.9 had the best velocity numbers
40.0 best group
40.1, I added 2 tenths elevation, the wind switched a little and shot number 3 was wide and just off the plate since I was using a small plate this time.
My velocity records for the above
This is my second barrel that favors 40.0 with Dtac's, with a high node at 41.2/41.3 range.
Today found me loading and testing my once fired, then annealed brass with 115 Dtac's seated -.030 from the lands while using H4350 and CCI SR mag primers.
100 yard velocity test, 2 shots each in .2 grain steps +/- 0.02 of a grain or one kernel of powder.
Pretty strong indication of a node between 39.9 & 40.1 (also 41.1-41.3 but I'll stick with the lower one for now) I loaded up 39.8 - 40.1 in one tenth steps, this time 5 rounds each and headed out for the long range.
These are all at 700 yards
First up 39.8, 1st shot I overestimated the wind and it went a little wide.
39.9 had the best velocity numbers
40.0 best group
40.1, I added 2 tenths elevation, the wind switched a little and shot number 3 was wide and just off the plate since I was using a small plate this time.
My velocity records for the above
This is my second barrel that favors 40.0 with Dtac's, with a high node at 41.2/41.3 range.
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Does anyone have experience running a really slow 6creed? Im talking 2850 range. I have one as a backup rifle to my 6br and was thinking about dropping speed to match that gun and also get some kind of barrel life out of the gun.
I'd be willing to drop mine that low if ES and SD with H4350 aren't horrible. I'm afraid H4350 is too fast and load density would be so low that it would be shit. I'd love a slow 6CM to get decent barrel life.
Just hit over 1,000 rounds on the Creedmoor. Started off running it pretty fast, north of 3,100 fps, which probably took off some life. Still grouping OK but I scoped the barrel and the throat looks pretty toasted. One more match this year so hopefully it holds out. Next barrel will get run closer to 3,000 fps to save the barrel a bit.
Decided to chrono some H4350 vs Reloader 16 in my Proof 26" 1:7.5 twist. Going to start a load test in another week but wanted to get an idea of where I'll be. I find it interesting how close these two powders lined up, considering RL16 is suppose to be much faster. Perhaps I have a fast lot of H4350... slow lot of RL16? Who knows.
I might order some DTAC 115's since I have a .188 freebore and do the same comparison.
108 ELD-M
Hornady Brass - Once fired, annealed, .289 w/Mandrel
CCI200 Primers
SilencerCO Omega w/ Magneto Speed V3
H4350
40.0 - 2947
40.3 - 2962
40.6 - 2994
40.9 - 3007
41.2 - 3044
41.5 - 3042
Reloader 16
40.0 - 2976
40.3 - 2986
40.6 - 3018
40.9 - 3048
41.2 - 3051
41.5 - 3055
Looks like I'll have something between 40.0-40.3 & 41.2-41.5 in both, which is where I guess most land anyways. Zero pressure signs so I guess I could push further.
Update Oct 20th:
40.6 of RL16 gave me 1/4” groups.
41.5 of H4350 gave me 1/4” groups.
Nothing like pulling your last shot in each to let you know you still suck.
I’ll chrono on my next outing both loads. I have about 4lbs of RL16 left. Prolly shoot that out then switch to H4350. Really impressed by how easy this was to tune.
Now... DTAC’s.... no go! Load workup showed this 26” 7.5 twist doesn’t like them. I’m talking 3-4” groups. Some I had no idea where the rounds went. Glad I only bought 100 of them. 108 ELD from here on out.
I might order some DTAC 115's since I have a .188 freebore and do the same comparison.
108 ELD-M
Hornady Brass - Once fired, annealed, .289 w/Mandrel
CCI200 Primers
SilencerCO Omega w/ Magneto Speed V3
H4350
40.0 - 2947
40.3 - 2962
40.6 - 2994
40.9 - 3007
41.2 - 3044
41.5 - 3042
Reloader 16
40.0 - 2976
40.3 - 2986
40.6 - 3018
40.9 - 3048
41.2 - 3051
41.5 - 3055
Looks like I'll have something between 40.0-40.3 & 41.2-41.5 in both, which is where I guess most land anyways. Zero pressure signs so I guess I could push further.
Update Oct 20th:
40.6 of RL16 gave me 1/4” groups.
41.5 of H4350 gave me 1/4” groups.
Nothing like pulling your last shot in each to let you know you still suck.
I’ll chrono on my next outing both loads. I have about 4lbs of RL16 left. Prolly shoot that out then switch to H4350. Really impressed by how easy this was to tune.
Now... DTAC’s.... no go! Load workup showed this 26” 7.5 twist doesn’t like them. I’m talking 3-4” groups. Some I had no idea where the rounds went. Glad I only bought 100 of them. 108 ELD from here on out.
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I don’t see why not. You have brass already. Pick up some H4350, some primers and the bullets you wanna use. The most popular are 105 Berger Hybrids.
Factory rifle or custom?
Solid speeds right there from a 19”!
Im testing the dtacs myself this weekend. Whats your charge? Hornady brass?
I’m running Starline SRP brass and 42.7gr of H4350 at 2.227 I give length.
It’s a custom. Green Mountain blank from Keystone.
One concern I have is that I’ll be learning on a round that is quicker to burn out barrels. How steep is the learning curve in general (even though this isn’t reloading 101 thread)?
I've gone thru many barrels including 3, 6 creed's barrels and I'm still learning.
It's no different than another caliber. Might be a tad easier cause of all the good info
on it here and good components for it.
You will go down the rabbit hole and eventually, buy more barrels and load different calibers.
It's no different than another caliber. Might be a tad easier cause of all the good info
on it here and good components for it.
You will go down the rabbit hole and eventually, buy more barrels and load different calibers.
I agree there. It all started with a 308 with me, then lead to a 223AI, the a 6.5creed and now the 6. Learned lots along the way also
I wouldn't worry about it. Barrels are meant to be shot out. When it's done, spin on a new one. 6cm is pretty easy to find a node. Start slow with the hardware you get. Don't worry about dropped lots of cash until you know it's something you wanna deep dive into. You can get a RCBS kit (this is what I started on).
Amazon.com : RCBS 9354 RC Supreme Master Kit : Sports & Outdoors
Amazon.com : RCBS 9354 RC Supreme Master Kit : Sports & Outdoors
www.amazon.com
I still have the press and the hand primer, everything else has been upgraded. Get some dies, a tumbler, calipers, and components and start there. We all start there.
There is a TON of info on here. Fire away with any questions and many will help!
Reloader 16-17 and h4350 have worked good for me with 40gr. In a custom bolt gun. The velocities have been within about 10-15 FPS with all three powders. 22” barrel. I started off with h4350 and it shot great but while I was coyote hunting I started to get chunks of carbon falling out of my suppressor down my barrel while packing the rifle on a shoulder sling. Causing my chamber to plug and I couldn’t chamber a bullet. I them switched to Reloader 17 and it was really clean burning. Reloader 16 was better than 4350 but still a little dirty. I think it has something to do with the 22” barrel because I had no problems in my 26” with it.
Forgot to mention this. But my suppressor seems to heat up really fast when shooting H4350 in a 19” barrel. Could this be due to slower burning powder burning in the can instead of the barrel.
Finally chrono’d my two loads with the 108’s
40.6 of RL16 gets me 3039 w/3.6SD
41.5 of H4350 get me 3120 w/ 5.7 SD
Only 5 shots, but It’ll do
Think I’ll go through these remain jugs of RL16, first.
40.6 of RL16 gets me 3039 w/3.6SD
41.5 of H4350 get me 3120 w/ 5.7 SD
Only 5 shots, but It’ll do
Think I’ll go through these remain jugs of RL16, first.
What was the temp out with the H4350, I running 41.8 and only was getting 3080 out of 105 hybrids but I did the work up at like 50 degrees
Try running some varget. I ended up running 38gr of varget in alpha brass. I chopped down a barrel to 18". Velocity was 3030 with a 105 amax. Had some old bullets laying around. Good for smoking coyotes
Anybody try Nosler 115 grain Rdf in 6 creed b.c. is .637 i think? Or do they shoot like $#@!
And anyone get a bad #lot of 115dtacs rbt they shoot awsome @ 100 200 230 yds but some open up past 300 yds i have herd about a bad lot but dont know if its true something in going on tho... ? O. Shooting 7 twist 28 "
I've gone through one load development with the Nosler 115 grainers... Found a node at ~2900fps pretty easily and confirmed trajecotry at 1054 yards using G7 BC 0.310. I didn't have any issues, so I bought some more. I"m using 38.6 grains of H4350 and jumping 0.010". I also loaded up single rounds with greater powder charges, my rifle accepted 1.2 grains over book max before showing pressure signs.
Thanks for your reply
H4350 29.0grains. 29.5grains works for me. 29.5 = 2950fps 0.020" jump ( good @ 100 yards anyhow. 115 grain Berger vld work also but impacted 1 and 1/2 inches to the right funny how that happens
.
The 115 rdf prime ammo is shooting great out of my .135 freebore 6 creedmoor. 1/2 moa groups. Getting 3030 FPS out of a 24” 1:7.5 twist barrel. Looking forward to hand loading some 115 RDFs. Actually shot this elk at 360 yards today with the 115.
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Yeah I was really surprised with the velocity from factory ammo. The barrel has always been fast. I’ll be sad when it dies, I am at around 1000+ rounds.
