6.5 wildcat- cartridge concept

[ELR LVR]

Here is something that has been clunking around in my head for a few days and want to hear some feed back.
I load for 6.5 creedmore
Ive mentioned i like to have reduced power cartridges..dont ask why..i just find it alot of fun for example
I have
221fb-223rem
17fb-17rem
30-30 - 308win
327 fed- 32s&w
357mag-38 special
And so on..
Its alot of fun to shoot both and experiment load & bullet combo.

So if i have a 6.5 creed...and now i want 6.5 grendal
The creed is about 51gr. Case capacity
A 6.5 grendal is 35gr case capacity.
Why not push the shoulder back in a creedmore case to achieve 35gr capacity and be done.
Can the gun smith chamber a barrel, and just cut off a set of dies to for a new (6.5 creedmore short)
Any of you wild cat reloaders good at squashing cases and can do it? ..
Lets see how a 35gr creedmore case looks.
And then we have no bolt head nonsense
Some one explain the pitfalls here..
It seems possible and a way to use up split neck creedmore cases

try 40.0 - 41.0 grns of 4831 in your 6.5 creed / w approx. 140 grn bullets
it is a mild shooting accurate load for my 260

 

[Kracken McGraw]

No moor More!

 

[muleystalker]

Ahhh probably still less money to pick up a howa mini action 1500 in 6.5 grendal..buy brass and dies a savage pre-fit from pac-nor is like 500$
The howa mini is 600$...duhhh what am i missing.
Complicated and expensive ..or
Affordable and lots of components, full rifle available with zero lead time.
Its a hassle to deal with bolt and barrel. Then toss in funky brass
I want a 6.5 creedmore (short)
What do you want to bet..some one from hornady is reading this and they are starting ammo production and trade make paperwork already..
Hahahahaa..
Yeah..i guess i had to talk through the cloud of ideas in my head for some clarity

A 6.5 BRX is what you're trying to make. If I was going to do it it would be a 6.5 BR or a 6.5 Dasher... a 6.5 BRX is going to be about the same as a Dasher variant as far as case capacity its just the dasher has a 40* shoulder. These would be the easiest route, there are already reamers available and use existing off the shelf bushing dies. Plus there is plenty of great brass and a lot less work making brass.

 

[Fuj]

Has anyone done a 6.5-250 Savage?

That would be an embarrassment......LOL Although, 6.5 Savage
does have a better ring to it instead of "Moor" being misspelled
again......

 

[JEFFPPC]

You know, if you guys spent the time it takes to form these various creations learning wind flags, you would be hard to beat. I guess the goal is beating the wind with a super cartridge. Ain't gonna happen.

 

[bobcat93]

Bobcat -

Howdy, once more.

If you want 6.5 Grendel case capacity in a .308 Win family case, the new wildcat case would be fairly short in o.a.l., while still having a notional .470” base diameter.

Shoulder diameter and shoulder angle chosen for the wildcat would ideally help towards reliable feeding and extraction…. and not work against them. For a magazine-fed application, such a short case o.a.l. might present challenges in feeding/ extraction ?

Consider:
One can get 34gr H2O case capacity w/ a 6.5 Grendel, which has something like a .432” shoulder diameter… .442” base diameter…. on a case w/ 1.0078” base-to-shoulder dimension. A fatter .308-based case would have an even shorter base-to-
shoulder dimension than what the ‘Grendel features. The 6BR Norma has a .9232” base-to-shoulder dimension. * As a result, your proposed .308Win-based wildcat would have a shorter than .9232” base-to-shoulder dimension; to hit the 34gr H2O case capacity goal.

With regards,
357Mag

So the 6.5 grendal , 6 arc = 6BR, is pretty much the same..they are both based of the 220 Russian case i believe..kind of sort of..
So my idea is pointless..
Hahahaha...i would rather waste words then money any day of the week..right..talk is cheap..hahahaha
I guess you put my topic out like a dirty old cigarette...
Dont worry ill conjure up more goofy stuff to kick around...one day...one day ill figure out something cool..isnt that what every one thinks...im a little snow flake..im special..im gonna find a breakthrough no one has thought of
What if we form brass in a different shape instead of how its been done..
The cylindrical case is out dated and old fashioned ..oh thats funny
Or how about (we shouldnt even need primers anymore..2025.).thats absolutely unnecessary, dirty.
Remington started with that Etron ignition system or what ever it was call and it disappeared
..think of all the money saving with glow plug instead of primers more computer consistency built into the gun that can be changed out like a battery..
But thats a nother topic ..and its coming..so collect your data 357 Mag
Hahaha..
we will meet again ! Good day sir. I said good day..hahaha

 

[357Mag]

So the 6.5 grendal , 6 arc = 6BR, is pretty much the same..they are both based of the 220 Russian case i believe..kind of sort of..
So my idea is pointless..
Hahahaha...i would rather waste words then money any day of the week..right..talk is cheap..hahahaha
I guess you put my topic out like a dirty old cigarette...
Dont worry ill conjure up more goofy stuff to kick around...one day...one day ill figure out something cool..isnt that what every one thinks...im a little snow flake..im special..im gonna find a breakthrough no one has thought of
What if we form brass in a different shape instead of how its been done..
The cylindrical case is out dated and old fashioned ..oh thats funny
Or how about (we shouldnt even need primers anymore..2025.).thats absolutely unnecessary, dirty.
Remington started with that Etron ignition system or what ever it was call and it disappeared
..think of all the money saving with glow plug instead of primers more computer consistency built into the gun that can be changed out like a battery..
But thats a nother topic ..and its coming..so collect your data 357 Mag
Hahaha..
we will meet again ! Good day sir. I said good day..hahaha

Bobcat -

Howdy !

Please take as info only.

“ 6 BR “ started as a wildcat based off foreshortened .308 Winchester brass.
I had one of the first “ .22BRs “ out there, and some of my original cases that I formed,
featured Large Rifle primer pockets. For me, accuracy level obtained was the same, when shooting either primer size ( “ benchrest “ ). Brass 6BR cases were produced w/ small rifle pockets, and my very first clutch of those cases My rifle with Fred Sinclair got for me, from Mike Walker…. who worked for Remington Arms.

I have no doubt you can come-up w/ a variety of new wildcats. I know of a benchrest shooter that was absolutely convinced he needed just .2gr more of H-4198, beyond what his “.30 Miller “ cases could hold. Last I heard, he was going to wildcat specifically for him to be able to add and shoot loads that included that last additional .2gr of
H-4198.

I like to design case form, and shoot new wildcats; that are taylored to meet my specific shooting needs.

In case I did not send it before, here’s a pic of my “ .358AutoMag wildcat.
This is a pretty short case, which I formed off 6BR or 7BR brass. That spared me the effort of having to form my short .358” cal wildcat cases directly from full length .308Win
brass.

* if you get a chance, look this site up on the internet…..

Salw.lv/materials/catalogues/en/7.data-base-of-munitions

- if offered a translate button, select it

- 9 catalogues are listed

- Rifle ammunition is the last one on the list. Many wildcats are briefly describes, some including pics.

- There are some 720 pages. .17” cal starts on page 88, and calibers increase as page numbering goes up.


With regards,
357Mag

 

[round]

@357Mag

What were the velocities of that 358automag ? I'd imagine it must have been like tossing lawn darts

 

[357Mag]

@357Mag

What were the velocities of that 358automag ? I'd imagine it must have been like tossing lawn darts

Round -

Howdy !

How ‘bout I reply via a DM to you ?

I believe I may have been pushing the limits, as regards nearly “ highjacking “
a post(s).


With regards,
357Mag

 

[358WCF]

I want a 6.5 creedmore (short)

How about a 6.5x33 Kurz?

Personally a Grendel sounds like the easiest & least costly option. At least 'til the big red H rediscovers a 6.5ARC or something. A 264 BR might be a touch faster.

 

[bobcat93]

Bobcat -

Howdy !

Please take as info only.

“ 6 BR “ started as a wildcat based off foreshortened .308 Winchester brass.
I had one of the first “ .22BRs “ out there, and some of my original cases that I formed,
featured Large Rifle primer pockets. For me, accuracy level obtained was the same, when shooting either primer size ( “ benchrest “ ). Brass 6BR cases were produced w/ small rifle pockets, and my very first clutch of those cases My rifle with Fred Sinclair got for me, from Mike Walker…. who worked for Remington Arms.

I have no doubt you can come-up w/ a variety of new wildcats. I know of a benchrest shooter that was absolutely convinced he needed just .2gr more of H-4198, beyond what his “.30 Miller “ cases could hold. Last I heard, he was going to wildcat specifically for him to be able to add and shoot loads that included that last additional .2gr of
H-4198.

I like to design case form, and shoot new wildcats; that are taylored to meet my specific shooting needs.

In case I did not send it before, here’s a pic of my “ .358AutoMag wildcat.
This is a pretty short case, which I formed off 6BR or 7BR brass. That spared me the effort of having to form my short .358” cal wildcat cases directly from full length .308Win
brass.

* if you get a chance, look this site up on the internet…..

Salw.lv/materials/catalogues/en/7.data-base-of-munitions

- if offered a translate button, select it

- 9 catalogues are listed

- Rifle ammunition is the last one on the list. Many wildcats are briefly describes, some including pics.

- There are some 720 pages. .17” cal starts on page 88, and calibers increase as page numbering goes up.


With regards,
357Mag

That is one cool cartridge..i love small cartridge

 

[bobcat93]

Round -

Howdy !

How ‘bout I reply via a DM to you ?

I believe I may have been pushing the limits, as regards nearly “ highjacking “
a post(s).


With regards,
357Mag

Your not stepping on my toes..were all here learning together.
Have at it..im just as interested

 

[357Mag]

@357Mag

What were the velocities of that 358automag ? I'd imagine it must have been like tossing lawn darts

Round -

Howdy, again !

On the “.358AutoMag “……

The trajectory when shooting either the REM .358” cal 150PSP was not bad at all….
likewise when shooting the Hornady 180gr Spire pt.

I had a 2X-boosted T-36 on the rifle, and that scope has a 1” tube.
I did NOT have to dial-in any stupid amount of elevation, at all. The 350yd groundhog
kill was accomplished easily, and I am convinced I could have killed some further out, had the opportunities presented themselves. The gun was surgically accurate.

If I were to re-mount the barrel on my Wichita, it would be to wring-out loads shooting the Cutting Edge 150gr. .358” cal turned-brass Extended Range “ Raptor “. I think the powder charge wt I used + the 22” barrel + the 1-16 twist would still stabilize the
comparatively longer 150gr Raptor.

However, I currently am awaiting a Bartlein .224” cal “ gain twist “ barrel, which I will be putting on my groundhog rifle ( ideally ) in time to do range work prior to the groundhogs emerging for 2026. I will have it chambered in my “.22-35 Remington “ wildcat, for shooting Hornady .224” cal 55SX bullets; exclusively.

I have in-mind to propel these varmint bullets w/ thin .009” jackets to 4,000fps.
Hornady used to include a slip of paper in each box of SX bullets that cautioned reloaders/shooters not to exceed 3,400fps with these. I had already been shooting the 55SX @ 3,700fps from 1977-1997; and never had any crawlers. I am going to try the gain twist in a. l-o-n-g 32” barrel, to see if a more-gradual acceleration in spinning up the bullet, can help get them to survive and function @ 4,000 fps.

With regards,
357Mag

 

[dave7mm]

Left to right
6.5GT
6.5x47
6.5 manbun
6.5SLR

 

[357Mag]

i still think it would be cool to squash a 6.5 creedmore case down to grendal capacityA

All -

Ooops…. I meant to send previous msg just above, as a “ PM “.

A thousand apologies !


Regards,
357Mag

 

[10XSHOOTER]

A 6.5 Needmoor SLR?