Would improving the 6.5 grendel be worthwhile

[Archer79]

Just wondering if you would gain enough to make the added work worth it...has anybody done a 6.5 grinch

 

[Archer79]

There is not really enough case taper to take any meaningful amount out...so you would only be going from a 30° to a 40° shoulder..so I'm gonna guess no

 

[RampedRaptor]

A little off topic but I did the improved 6mm Grendel. Looking back I wouldn’t do it again. The original unaltered Grendel case is great the way it is

 

[kevinbritvec]

Why? The round was specifically designed to work in an AR-15 and has it's limitations because of it.

With so many really good options going a little bigger there is no reason to monkey with it.

 

[Archer79]

Why? The round was specifically designed to work in an AR-15 and has it's limitations because of it.

With so many really good options going a little bigger there is no reason to monkey with it.

I bought a short range ppc(slow twist)....too good of a price to pass up...I shoot long range...just something different to play with

 

[APGE]

I bought a short range ppc(slow twist)....too good of a price to pass up...I shoot long range...just something different to play with

I'm in exactly the same boat - saw a cheap ppc that I couldn't say no to, and I don't shoot short range.

I don't think that the shift from a 30 to 40 degree shoulder will give a marked improvement on capacity, so I don't think I'll go down the improved route.

At this stage, I'm leaning towards a 20" barrel grendel that will be throated for 147 ELDs. The reason for the for the short barrel is twofold - firstly it won't upset the balance of the well tuned ppc, secondly, I have a 20" 6.5 barrel on hand.

Quickload says I should get 2470fps using 4895, which will give surprisingly good ballistics, even beyond 600 yards. Not a 284 beater, but I have a 7mm Saum for that.

My ftr rifle shoots 230 Sierra's and hybrids at 2500fps, and does it very well, so the low velocity of the 147/grendel combo isn't a concern to me.

It might be a month or more before I get around to doing this - if you beat me to it, please share your results.

 

[R.Morehouse]

Had a Grendel in the AR platform and it was a whole lot of fun......But not nearly the fun that i am having with that little cartridge necked up to a 30 Major on a short range PPC set up.......The barrel and brass will last it will seem forever and the accuracy is 6PPCish.

Regards
Rick

 

[Archer79]

I'm chambering it for grendel I have a 30" 7 twist mullerworks barrel...(the berger twist rate chart says it'll work?)....I should be able to get 6br like results....maybe....lol

 

[2506]

APGE After my working with the 6.5 Grendel 2470 fps with 143s out of a 20" barrel is quite a bit optimistic. If you get there you will not be getting any case life because you will be well over standard pressure. You may be able to get this out of a 24" barrel. Leverevlution (LVR) powder works really well with 130s and heaver.

 

[Sniper338]

Id say a grendel with 147gr bullets at 2470 is very optimistic as well.

I run 123gr bullets crunching powder and barley break 2500fps. 147s would be lobbing them. Not enough boiler room imo.

 

[spclark]

Id say a grendel with 147gr bullets at 2470 is very optimistic as well.

Indeed it is.

I had 2 AR Grendel uppers ~ 10 years ago, a 30” Broughton bolt-gun barrel too. None shot anything over 130’s with any consistent accuracy to 600 yards let alone any farther. Comes down to case capacity in the end, just not enough for 6.5’s heavier than 130 grains to be efficient.

Sold the uppers, had that Broughton rechambered to 260. Much better results.

 

[APGE]

Id say a grendel with 147gr bullets at 2470 is very optimistic as well.

I run 123gr bullets crunching powder and barley break 2500fps. 147s would be lobbing them. Not enough boiler room imo.

Bolt action or AR? Seated to magazine length or single load?

AR bolts and magazine length loads severely restrict such a small case.

I'm talking in a quality bolt action with a very long throat

With a case full of 4895, quiickload tells me I should hit an OBT node at 64k psi Yes that's hot, but still low compared with what a lot of folks run a 6 ppc at. 8208 gives similar results, albeit a little slower.

 

[APGE]

Indeed it is.

I had 2 AR Grendel uppers ~ 10 years ago, a 30” Broughton bolt-gun barrel too. None shot anything over 130’s with any consistent accuracy to 600 yards let alone any farther. Comes down to case capacity in the end, just not enough for 6.5’s heavier than 130 grains to be efficient.

Sold the uppers, had that Broughton rechambered to 260. Much better results.

I wonder since loads for Grendels look to get complete burns in short barrels, whether barrels as long as 30" actually achieve anything? I had a 223 barrel set up for 90 grainers that shot faster with the same load when shortened it from 32" to 28" - could the same thing be true of the Grendel?

 

[Archer79]

I wonder since loads for Grendels look to get complete burns in short barrels, whether barrels as long as 30" actually achieve anything? I had a 223 barrel set up for 90 grainers that shot faster with the same load when shortened it from 32" to 28" - could the same thing be true of the Grendel?

There is a article on this forum about the grendel I believe the gun they were working with had a 28" tube and would send a 130 at 2760 and they figured that 30 or 32 would get them more

 

[GSPV]

I have one in 30 Major. Like a 30 Grendel. Great little deer, hog, and coyote rifle. But, if I had it to do over, I wouldn’t have a damned AR. My 30 Major benchrest rifle? Now that was a compelling combination....

 

[Scotts556]

One of the local guys I shoot with played with the heavy's in the Grendel. 2300FPS was the best he could get. Trajectory made a 45ACP look good. 6mm Grendel variants can get great MV and good ballistics. One of the guys I shoot with has a 22 Grendel and with 80GR eld-m's it matchs his 6XC dope wise.

The Grendel is like the creedmoor. Was over hyped and has a Glock like fanboy base. it does alright at wat is was intended for. But in the end. your still just getting 308 like ballistics.

 

[Larryh128]

I'm in exactly the same boat - saw a cheap ppc that I couldn't say no to, and I don't shoot short range.

I don't think that the shift from a 30 to 40 degree shoulder will give a marked improvement on capacity, so I don't think I'll go down the improved route.

At this stage, I'm leaning towards a 20" barrel grendel that will be throated for 147 ELDs. The reason for the for the short barrel is twofold - firstly it won't upset the balance of the well tuned ppc, secondly, I have a 20" 6.5 barrel on hand.

Quickload says I should get 2470fps using 4895, which will give surprisingly good ballistics, even beyond 600 yards. Not a 284 beater, but I have a 7mm Saum for that.

My ftr rifle shoots 230 Sierra's and hybrids at 2500fps, and does it very well, so the low velocity of the 147/grendel combo isn't a concern to me.

It might be a month or more before I get around to doing this - if you beat me to it, please share your results.

We shoot several Grendels and the powder we use is AR comp. It's worth a try. Good velo and accuracy.

 

[gunsandgunsmithing]

We shoot several Grendels and the powder we use is AR comp. It's worth a try. Good velo and accuracy.

AR's or bolt guns? The op seems most interested in bolt gun loads, which are very limited. I can say with absolute certainty that max loads for the two are very, very different. Not to say that AR Comp will or won't work well.

In a good bolt gun and with good brass, a Grendel is a ppc on steroids.

 

[mike.e]

Been done, have a read here
http://www.65grendel.com/forum/show...cated-handloaders/page3&highlight=Grendel+Max

 

[Larryh128]

AR's or bolt guns? The op seems most interested in bolt gun loads, which are very limited. I can say with absolute certainty that max loads for the two are very, very different. Not to say that AR Comp will or won't work well.

In a good bolt gun and with good brass, a Grendel is a ppc on steroids.

That's in gas guns but velo is good as well as accuracy.