6 Creedmoor downloading to 6 Dasher

[Frankm]

Got a 243 Win in a heavy barreled Rem 700 SA. Bore getting rough and fouling more than I want to deal with.

Trying to decide between Dasher or Creedmoor and don't need to push 105 range bullets into 3000+ fps. Want to build on a 22-24" barrel for handiness and gun would be for shooting steel to 1000 and rockchucks/coyotes.

Want to stick with BDL floorplate as gun currently in nice Micky Game Hunter edge fill.

Questions:
I may or may not have feeding issues with Dasher? Input?

Creedmoor would feed nicely and interested if anyone has experience with running low node loads; say 2800-2900 fps with 105 s and what results you ve had with that? (Basically Dasher performance in better feeding case with less expense in dies, brass, etc)

Thinking a guy might find success with 38-39 grs of H4350 and thus be using only 6-7 grs more than Dasher with Varget/R15.

Really haven't been able to find low node 6 Creedmoor data and input. 95-99% of guys trying to get max out of the case.

Thx for any experiences.

 

[Lefty Trigger]

6mm Creedmoor is easier/cheaper to get brass for. I have one and it is a really accurate round more so than its big brother the 6.5 but they are driving right as 3000fps. My 6mm Creedmoor did not shoot as well in a low node, I think it likes the case almost full. The dasher is super accurate at slightly slower speeds but not as easy to obtain brass for it even though some are actually making it now it is costly. I had a 6mm BRX for awhile and hated it because of the whole making brass issue,... still cant sell that barrel?

 

[Rob01]

That load of H4350 will probably put you where you want to be with the 6 Creed. I run a 28" barrel and run 41.5grns to get my 108s at right around the 3000fps mark.

You have a .243 now so why change? Also try some Tubb TMS rounds through the .243 and it might help it last longer.

 

[Frankm]

Rob01, 243 has 1000 rounds through it, factory VLS barrel, and now getting difficult to get it cleaned up. Used to be easy to clean and remove copper.

I did do the Tubbs Final Finish to it when new and for s factory tube it was a delight to clean. Did run 3 of the TMS bullets through it last week and coppered up with just those 3 shots. Haven't taken it back out yet but not much faith it won't still be the same.

Reason for Creedmoor or possibly Dasher is to better fit cartridges in magazine. Shooting 105 AMax in 243 at 2.810 OAL and jumping .090 to throat.... that said still shooting 1/2" at 100 but cleaning it is a PITA !!

 

[Frankm]

Lefty Trigger, what kind of groups and ES were you seeing in the lower nodes might I ask?

How much better was the upper node in comparison?
Thx!

 

[Rob01]

Yeah fitting them in the internal mag is tougher with a factory rifle but if you got the rifle rebarreled and chambered with a .243 match chamber that has shorter free bore then you can still use the .243 and internal mag. Not all .243 chambers are the same and Remington is one of the loosest.

That said the creedmoor will allow being .020” off the lands at 2.800” oal. That’s where I load my 108 ELDs to in mine with the saami spec .183 free bore.

 

[Frankm]

Gunsmith/friend has a tight neck Creedmoor reamer with either .150 or .160 freebore. 108 eldms touch throat at 2.770 ish.

 

[Rob01]

I wouldn't want that with that bullet. Jams bullet too far into case. Factory ammo is about 2.800". Those short freebores are for the longer bullets with ogives farther back.

Also no need for a tight neck. Unless you meant that as the shorter freebore.

But if you have a smith friend then why not just get a short freebore .243?

 

[Frankm]

Would have to spec a reamer which is doable but where I want to shoot 105-108 gr bullets would have more bullet shoved back into case than if using CM case... only advantage to short throated 243 that I see if I already have dies and brass.

Seems like most of these selections have Pros and Cons ... lol

 

[MTlager]

I shoot the H115 vld in my creeds and prefer them over the 105. 8 twist barrel with 39 gr rl16 slow node in the 3000 fps range. My hunting loads I run them at 3100 fps with RL26 in a 26'' barrel. Work better for steel shooting @ 1000 plus. The other day put 3 in a row, 11 inches apart on plate 1740 yards. I feel that case works better with the heavier bullets, and will also feed better than a dasher. H 4831 is also a good powder for accuracy and a little less velocity than 16 or 4350! The .150 freebore is good for the 115 berger.

 

[Rob01]

Would have to spec a reamer which is doable but where I want to shoot 105-108 gr bullets would have more bullet shoved back into case than if using CM case... only advantage to short throated 243 that I see if I already have dies and brass.

Seems like most of these selections have Pros and Cons ... lol

Yes they do. LOL You can actually use the .243 seater with the Creedmoor so you would only need a sizing die. Sounds like if you don't want to stay .243 then the 6 Creed is the choice.

Back to the .243 though. You would not have anymore of the bullet in the case than you do now but the freebore would be closer so instead of jumping .090" you could be jumping .020". They make reamers like that so it wouldn't be a special order. Just need to buy it if your smith doesn't have it. But again if going for a Creed then I would say stick with the .183 SAAMI freebore unless you are changing bullets.

 

[Frankm]

Thx guys for input; all good food for thought!

Anyone with lower velocity successes in 6 CM ? Love to hear them.

 

[Hohn]

I'd suggest staying with the SAMMI chamber and reamer. Deviate on a 2nd barrel once you know what you want to do differently. But deviating when you don't know the preferred OAL for your given bullet and load and such is unwise.

If you want lower velocity in the 6cm, I'd switch speed ranges of powder. Either a slower powder so you can go 100% case fill with less MV and pressure, or a faster powder with smaller charges and less case fill.

For example, I have had great luck with RL15 in 6.5 creedmoor with 140s. Yes, it's giving up 150-200fps. But it's a crazy accurate load in a $300 rifle.

 

[Frankm]

You ve quoted exactly what I m hoping to get from someone... lower velocity powder charges whether 1) smaller charges of faster powders or 2) full case charges of slower powders. I m got a pretty large selection of powders just look king for some charges/loads that have been proven.

Thanks

 

[reloaderguy]

You ve quoted exactly what I m hoping to get from someone... lower velocity powder charges whether 1) smaller charges of faster powders or 2) full case charges of slower powders. I m got a pretty large selection of powders just look king for some charges/loads that have been proven.

Thanks

I have a 24" 6CM that I had rebarelled from a fast twist 243Win. I get 2925fps with 115gr DTAC and 43.0gr of H4831SC. I ran RL22 and H4831SC in the 243Win prior to the barrel change and the velocity difference was only about 50fps. If I had to do it over I'd have just stuck with the 243Win instead of investing in a new cartridge. With that said, if you decide on 6CM you can run a variety of slower powders to drop velocity. I would, however, select the powder based on fill percentage that fits your velocity objective rather than just dropping the charge of a faster powder to reduce speed.

There is no free lunch as you're finding out.

 

[4xforfun]

HMMMM....How about the 6x47L. I love mine and now have factory brass!! Fits into the Mag without any problems. Good brass.

Just my .02,
Tod

 

[Hohn]

You ve quoted exactly what I m hoping to get from someone... lower velocity powder charges whether 1) smaller charges of faster powders or 2) full case charges of slower powders. I m got a pretty large selection of powders just look king for some charges/loads that have been proven.

Thanks

Stuff as much H1000 in it as it will hold and see what you get.

 

[Geocodyrgia]

I’m using 7828 in my 6CM and it’s showing great promise. On a lark averaged three cases filled to the bottom of the neck, backed off 10% and worked up

 

[Longtrain]

From the Dasher side...it’s proven to get where you want with exceptional accuracy. The 6CM may or may not work within the nodes you are hoping for, I would guess it would be fine with a little experimentation. I don’t know what the barrel life is on a 6CM, guessing 1800 or so. My Dasher came off at 2400, when it just started to copper a bit.
I’ll agree that forming brass may take a bit of time, but now there is some major manufacturers offering it out of the box. I have FF’ed probably 800 pieces and they are still in rotation.
With the Dasher use 32-33 grains of RE15 or Varget, jump a 105 class bullet 10 thou. and you’re there. Good luck, if you choose a 6CM please post your results as it would be interesting to compare.

 

[SAP]

From the Dasher side...it’s proven to get where you want with exceptional accuracy. The 6CM may or may not work within the nodes you are hoping for, I would guess it would be fine with a little experimentation. I don’t know what the barrel life is on a 6CM, guessing 1800 or so. My Dasher came off at 2400, when it just started to copper a bit.
I’ll agree that forming brass may take a bit of time, but now there is some major manufacturers offering it out of the box. I have FF’ed probably 800 pieces and they are still in rotation.
With the Dasher use 32-33 grains of RE15 or Varget, jump a 105 class bullet 10 thou. and you’re there. Good luck, if you choose a 6CM please post your results as it would be interesting to compare.

My buddy is shooting a 6 CM and I shoot the dasher. He is finding his node around 3030 to 3060. I am running my dasher at the same velocities with approximately 5 grains less powder and is still shooting better. Not to mention my barrel life has been good.