6 creed or 6.5 creed for suppressed 18-20” barrel

[Joshuajosh]

I am currently looking for a new cartridge to mess with, I mainly use my 223 rokslide special for hunting/ steel, however I would like something that will retain 1800fps out to 6-700 yds in a 18” barrel (maybe 20”). I am picking up a tbac ultra 7 as my first supressor and I’m going to order a pre-fit in one of these two calibers for my switch barrel origin setup. Those of you who have used both, what are your thoughts on these two cartridges in short barrel/suppressed configurations?

 

[Deadspace]

Do you reload?

 

[Jason277]

You will probably need to go with the 6cm . lighter bullets etc...

 

[Joshuajosh]

Do you reload?

Sometimes, however I still use factory ammo quite often.

 

[Fever Buck]

Following. Have a tikka action waiting to decide on an 18” 6CM or 6.5CM.

 

[waspocrew]

Personally, I like the 6 CM better. Plenty of good factory ammo options (maybe not nearly as many as 6.5) and quality components if you load. A bit less recoil to deal with as well. My 6 CM shoots factory Hornady 108 and Prime 107 SMK into little tiny holes. Makes it hard to want to reload when factory ammo shoots so well.

 

[bojangles808]

I have both and I prefer the 6cm bc of the lighter recoil

 

[JohnJohnson]

I already had a 16.5" 6.5CM and I just put together a Tikka 6CM with an 18" barrel as (in my mind) a better option.

 

[Fever Buck]

Anybody got real world velocity data on the 18” 6CM vs 18” 6.5CM?

 

[HairyScandinavian]

Anybody got real world velocity data on the 18” 6CM vs 18” 6.5CM?

I don't have 6 or load daya, but I do have an 18" 6.5 CM with factory data.

Hornady 147gr ELD-M
=2544 average

Hornady 143gr ELD-X
=2546 average

Norma Bondstrike
=2540 average

Superformance 129gr SST
=2821 average

 

[Deadspace]

Sometimes, however I still use factory ammo quite often.

I don’t have experience with the 6.5 but my 16” 6 creed shoots the factory 108 eldm’s around 2750. My hand loads with the 115 DTACS are going 2850ish.

 

[hereinaz]

If you shoot less than 500 yards on game, I would 100% go 16” 6 creed, and it will match or beat the longer 6.5 creed.

How far will you be shooting?

Ultra 7 is great on them.z

 

[TxLite]

Anybody got real world velocity data on the 18” 6CM vs 18” 6.5CM?

My 18” 6 creed is averaging 2700fps with factory 108 elite hunters. Can’t help with the 6.5

 

[199p]

I already had a 16.5" 6.5CM and I just put together a Tikka 6CM with an 18" barrel as (in my mind) a better option.

I have a 16" 6.5 and it goes ok just running factory, going to rebarrel into 22cm or 6mm and go to 18 the 2" shorter is quite a killer in performance and only getting 2480 from hornady 143 factory

 

[AZ_Hunter]

Suppressed 16” tikka 6.5 - 45.5 Staball 6.5 with 130 TMK @2750.

I think with the shorter barreled 6.5, the 130 class bullet makes more sense, at least for my use case. Depending on DA, it can get way out there… further than I would shoot at game.

I wanted a 6CM, but tikka doesn’t make one. I know there are options to remedy that or I could use a factory 243 and handload the heavies, but the easy button was just getting a 6.5. Components/ammo is as prolific as it can get. After having done lots of wildcats over the years, and my loading time being much less having active kids, I wanted the “easy button”, so 6.5 made sense to me. Every store around me has a billion types of ammo available for it, so if I can’t hit the reloading bench, I have zero problem having choices in ammo… not to mention out of state small mom and pop shops and commonality with a hunting partner.

Recoil of a suppressed 6.5 I would say is akin to a unsuppressed 243. So that part of the equation wasn’t a factor for me.

Not trying to persuade you, just explaining my logic on going with the 6.5 for my short and light bolt rifle.

Dope is approximately 1000ft elevation:

 

[Taudisio]

2018 ammo-20” 6.5 creed factory 143’s average 2557
2025 ammo-20” 6 creed factory 108’s average 2774

I am really enjoying the 6 creed more than my 6.5’s
Also edit to add, my hand loads are the 109eldm at 2935fps from the same 20”.

 

[Billy Goat]

2626avg FPS with a 140 out of 20" 6.5 suppressed. @ 600 yards it's 1803 fps.

If you are really wanting 1800 fps at 700 yards, definitely need lighter bullet, probably best with 6creed.

 

[ARK_Ginger]

I have a 20" 6.5 and I wish I had the 6 creed. I can buy a lot of 6.5 components for the cost difference to swap barrels in my tikka though.

 

[TradLife406]

My 18" Sig Cross 6.5 is about 2450-2550 with handloads. 140 grainers. I've gotten over 2700 using Bergers crazy data But it didn't shoot good because my gun doesn't like the 140 Berger elites. If you need more speed just use Berger data. Their load development is "well all this powder won't actually fit into the case, but get as much in as you can and compress the heck out of it"

 

[MuleyFever]

6CM > 6.5CM