Author Topic: hope to order 527 / 6.5 Grendel, but....  (Read 707 times)

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Offline jonbar

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hope to order 527 / 6.5 Grendel, but....
« on: December 15, 2020, 11:48:15 AM »
Hello---I need a light-weight and compact deer rifle. I already own a 527 in .17 Hornet, so I'm familiar with this model. I'd like a Grendel version, but NOT in either a 24 inch American, or 16.5 inch suppressor-ready carbine. If the current walnut carbine was available in 6.5, I might go for it, but who knows when or if that will happen? At 71 years old, I dunno how many years of hunting I have left, so I'm thinking of getting the American 6.5 now and having the barrel shortened to 20 inches. I'm aware of the velocity loss by knocking the length to 20", but feel that it's an acceptable trade-off for better maneuverability and lighter weight in the woods. A very long shot for my hunting environment would be 150 yds.--- 50, or even 35 yds. is typical. But I'm attracted to how the Grendel holds its velocity and energy at surprising ranges, in contrast to the 7.62 X 39.

So, I ask current 18.5" carbine owners this: what is the barrel diameter at the muzzle of your gun? And, are the barrel contours of the American and the Carbine the same, except for length?  The diameter of my Hornet barrel at 18.5" is about .62 and at 20" it's .615 or so. (These measurements are really approximate. I'm allowing a bit more than .75 inches between the chamber face and the forward end of the breach opening.) At the muzzle, my barrel measures about .573". It's a 21.875" sporter weight barrel, but a .17 caliber hole through it leaves quite a lot of steel. Despite wanting a lighter rifle, I'm not that fond of real skinny barrels, and would like to know what I'm getting into before I jump.

Another question: CZ has not, far as I know, discussed this issue, but it looks to me as though the most recent American model has a bit less drop at the comb than earlier versions, and the Carbine, where the open sights might allow that greater comb drop.  They do not publish this measurement the way some other makers do. Does anyone know if the newest Americans have this reduced drop?

I would have probably have my Grendel drilled and tapped for custom weaver-style bases out on the barrel, to mount a Scout-pattern scope there. I have thirty years experience with Mr. Cooper's system and like it. A conventional scope has to be mounted high enough to clear the opened bolt handle, which is pretty high on these rifles, too high for me to get a decent cheek weld when aiming.  My current woods rifle, a Browning 71 in .348,  wears a 2.75X Burris Scout on the barrel, and it works well. But at a total of 9+ lbs, with scope and sling but un-loaded, it's getting to be a chore. It's more powerful than needed for white-tail. And carrying that classic lever action with my paw clutching the receiver makes my hand cold at 20 degrees. Make fun of old people all you want. We'll make room for you when you get here, if you're lucky enough to make it.

I look forward to comments!

Offline david s

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Re: hope to order 527 / 6.5 Grendel, but....
« Reply #1 on: December 17, 2020, 06:54:43 PM »
I've read your post a couple of times and I'm not sure I understand it fully. I dont know about any stock changes but my last 527 in 6.5 Grendel with a 2017 date stamp and a "C" prefix is the same as my earlier stocks. For barrel diameters my 223 Carbine  is about .610" this is about what I got on an American in 22 Hornet and the 6.5 American at 18 1/2". At 20 inch's the Hornet was .590 and the 6.5 was .590. At 22 inches the Hornet went .575 and the 6.5 was .572. And the 6.5 went .550 at the muzzle. Just looking at the Hornet and 6.5 barrel profiles they appear very close thru out there length. Quite a few people were put off by CZ offering the 527 American in 6.5 Grendel with the 24 inch barrel. But as you may be planning it's easier to take some off than it is to add it. I hope some of this is what your looking for, Good Luck with what you have planned. I should mention my Carbine is an earlier one with the sights dovetailed not the current one with the sights that screw on. I dont know if this changes any thing.

Offline jonbar

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Re: hope to order 527 / 6.5 Grendel, but....
« Reply #2 on: December 17, 2020, 10:35:09 PM »
David S., that's very helpful. My post was too wordy--got carried away, I suppose.

My guess is that the barrel contour and thickness of all the calibers and models of the 527, EXCEPT for the varmint variants, is about similar but not identical. Is the barrel on your 6.5 24" long, like the current catalog spec? My .17H and your 6.5 are very close in diameter at the muzzle, but my barrel is 21.875", so tapers faster(?)

The stock question is still open. My .17 Hornet American was bought new in '17 or '18---serial C392xxx. If my hunch is correct about CZ reducing the drop of the comb, it may have come in rifles made after mine.

Maybe another member has info about this. Meanwhile, I'll get out the .17H and attempt to measure the drop, for reference.

Thanks again for your help!

Offline david s

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Re: hope to order 527 / 6.5 Grendel, but....
« Reply #3 on: December 18, 2020, 03:49:54 PM »
The barrel on my 6.5 is the full factory length, it may be closer to 23.75". I was using the gas escape hole on the receivers right side as a reference for the back of the barrel when measuring. CZ may be going thru some manufacturing updates recently. A member here has a newer 527 bolt with machining mark where the CNC tool didn't lift enough before moving on. I've seen a few photos of a later model 527 with a "D" prefix and the machining of the left side of the receiver looked more angular and not quite as rounded as previously in the photos. Stocks may well have changed slightly recently also. Next time I'm at a CZ dealer I'll have to take a closer look.

Offline whitearrow

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Re: hope to order 527 / 6.5 Grendel, but....
« Reply #4 on: February 22, 2021, 10:43:19 PM »
I’m late to the party jonbar but never fear find you some factory tikka t3 rings for the 527. They are as low as you can go with the 527 and you will need the new scalloped out bolt handle as to not contact with ocular of the scope.
Big Ed

 

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