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Old 02-24-2019, 02:19 AM
Wyocaddis
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who reloads there CZ527 222rem



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I have an American on the way. My questions are, are the magazines long enough to allow for bullets to be seated to the lands, if so what weights 40,50,55? Second question if the 222 magazine does not allow one to seat bullets to the lands, will the 223 magazine, one work in the 222, and two allow for bullets to be seated out further? Will be using mostly Hornady or Nosler bullets. An internal magazine length of each would be great to get a maximum COAL.
Thanks for your time and have a great day
Rick

Last edited by Wyocaddis; 02-24-2019 at 02:38 AM.
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Old 02-24-2019, 05:41 AM
56S

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Oh man, I really should know the answers to your questions since my 527 has never seen factory ammo. From memory I can say there has never been any reloads that didn't fit in the mag....Within reason. Possibly a Nosler tipped bullet may pose a problem but I favor SP or HP bullets with mine. I don't have a real good way to measure the exact length only guessing by inserting a dummy round left long and Sharpie-ing the bullet to look for engagement marks. (I oft wonder how someone can say they seat their bullets .XXX" off the lands when I can never find bullets that are that consistent)

I can however try to give you a measurement of the total available space in the mag once I get up and moving this morning. Both calipers are in the shop 40 yds away and I'm still working one my first cup of coffee.

I hope you enjoy your 527 as much as I do mine. Mine is a 2004 vintage and still makes me smile.

Edit: I measured the max inside length of my 527 222 REM mag and found the longest tipped bullet cartridge length to be 2.204". The outside measurement front to back is 2.262" and there is no spacer in this mag. My 17HH/22H mag is the same outside length as the 222 REM but it has a spacer. IIRC the 223 REM mag is longer and requires a different bottom metal. My bolt extends back past the rear of my mag by about 1/8" so it might be possible to convert the 222 to use the 223 mag by changing the mag and bottom metal.

Last edited by 56S; 02-24-2019 at 06:05 AM. Reason: Got off my lazy duff and grabbed the calipers
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Old 02-24-2019, 05:52 AM
Wyocaddis
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Quote:
Originally Posted by 56S View Post
Oh man, I really should know the answers to your questions since my 527 has never seen factory ammo. From memory I can say there has never been any reloads that didn't fit in the mag....Within reason. Possibly a Nosler tipped bullet may pose a problem but I favor SP or HP bullets with mine. I don't have a real good way to measure the exact length only guessing by inserting a dummy round left long and Sharpie-ing the bullet to look for engagement marks. (I oft wonder how someone can say they seat their bullets .XXX" off the lands when I can never find bullets that are that consistent)

I can however try to give you a measurement of the total available space in the mag once I get up and moving this morning. Both calipers are in the shop 40 yds away and I'm still working one my first cup of coffee.

I hope you enjoy your 527 as much as I do mine. Mine is a 2004 vintage and still makes me smile.
Thanks for the help. I have a hornady chamber length gauge and 222 case to fit it for another 222 that I can measure once rifle is here. But the magazine length will help greatly and give me a good idea of where to start. May I ask what you have found your 527 likes in regards to powder and bullets? With you would rather not post your loads here you are welcome to message me.

Thanks

Last edited by Wyocaddis; 02-24-2019 at 05:57 AM.
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Old 02-24-2019, 06:18 AM
56S

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See edit for mag info.

Mine shoots very well with most everything I shove in there. With the exception of 55 gr FMJ bullets. Preferred bullet has been the Sierra or Hornady 50gr SP but Dogtown 34gr HP show promise. I bought some 50gr Nosler tipped BT in bulk hoping they would do well but they are too long to stay stable. Powders range from H332, BLC2, 2015, 4198 and 3031. None really stands out as being that much better. It seems it's easier to find a load it likes than one it doesn't.

One thing to check of you're buying new: My 222 came with a gob of muckem-puckey surrounding the recoil lug as bedding. My 17HH which is 2017 vintage did not. Groups suffered on the HH until I put a pea sized dollup of JB weld in the stock cavity.
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Old 02-24-2019, 06:34 AM
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Wyo: One thing I am certain of is that the .222 and .223 mags will not interchange. I know this because Calhoon makes single shot followers that I use for the two calibers in 527's. One is "L" for long and the other is "S" for short. Historically, CZ has also chambered their 527's in .221 Fireball, and Hornet (I think) and so Calhoon needed single shot followers to cover everything from .223 Remington to the slightly shorter rounds in that action. I actually have only used my .222 magazine once, when sighting in my American.

That said, unless your chamber is extraordinarily deep, there shouldn't be a problem seating your bullets for .222 where you want them and using the mags. I moved over to the Calhoon because I was trying to wring every last bit of accuracy out of the rifle, and I was concerned (with my neck tension) that recoil was going to change the bullet seating depth with five rounds loaded in the magazine. I didn't want to start crimping the cases, so the single shot follower let me take another variable out of the mix.

At the end of the day, the length of the 35, 50, and 52 grain bullets is not that great, and the .222's long neck will give you a lot of seating depth choice. But until you have your rifle in hand and take some measurements, you won't know for sure. BTW, it is a great caliber. . .has actually become my favorite CF caliber at 100-200 yards. You probably have more experience than I do in this, but I have had great results from 4198 and 40 grain bullets. Just magic. It is mild enough (milder than the .223) so that I can keep my scope on target to see the bullet hit. Can't do that with my .223 sporters -- muzzle jump always gets me. Also, the loads are pretty moderate -- you will likely run out of case volume before you hit pressure problems with the most popular powders.

[Edit: OK, I got my lazy butt up out of a chair and measured. The .222 magazine's outer length is 2.270 inches. That of the .223 is 2.397 inches. So a "big" tenth difference between them.. . . hopefully, this picture will work:]
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Old 02-24-2019, 07:31 AM
56S

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OK, I found one for you.

Win brass, 21.0 gr H4198, Nosler Varmageddon 40gr FB tipped, S&B primer COAL at 2.148". Pretty much a consistent group of 5 shots of 1/2" at 100 yards. Notes show differing powder weights with groups similar and some loaded to 2.168" but slightly larger groups. It does seem to like these bullets.

It's too bad we have to add the fine print.....Use data at your own risk. This load is .4gr below published max so start low.
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Old 02-24-2019, 07:44 AM
Wyocaddis
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Thanks for the help guys, it should be later part of week. I also have the a 527 American in 17HH and its a shooter rarely over .5 except when I'm not doing my part. But as you may know or not the wind here in Wyoming can be trouble some at times So why not get another 527 in 222 My Love affair with the triple deuce started in the 70's when played some benchrest. That was a 40x, it is long gone now. The only one I have now is an old Rem 600 Mohawk but it still shoots the hornady 40gr. V-Max in the .3-.4's with H335 and screams along at 3600 for such a short barrel. It's not pretty to look at but think I gave around 180.00 new back in the day.


Again thanks for your time, and have a great day.

Rick

Last edited by Wyocaddis; 02-24-2019 at 07:58 AM.
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Old 02-25-2019, 03:47 AM
Wyocaddis
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Powders

Believe it or not was looking at my appropriate powder supply today and no 4198 or H322 on hand.
But do have the following, Benchmark, H335 (5#), 3031, CFE, RL 7, RL 10. AA 2200, and AA 1680, Think I will do barrel break in with H335 since have quite a bit. I really like Benchmark in the 223. I have found it to give some of the lowest SD's I have ever seen, it varies very little from lot to lot the most I have seen to date is an average of 55 fps. It is also not nearly as sensitive to temperature as H335 so here's hoping it will work as well in the 222. RL 7 is real close to 4198 so will give that a whirl as well once break in is done.

P.S. I use rem. 7 1/2 primers 90% of the time in my small rifle cartridges, They work very well.
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Old 02-25-2019, 07:38 AM
56S

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I've found the choice of bullet affects accuracy more than power. The 34 gr HP bulk show real promise with H4198 too. Extrapolate charges based on other loads. The Seller's and Beloit primers at Cabelas are my choice here of late. Sale prices get as low as $22. Consistant and cheap. Best loads on my 17HH with 4198 are Win SPP but the S&B are very, very close.
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Old 02-25-2019, 04:35 PM
Wyocaddis
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grabbed a pound of H4198 after work this morning. LOL work nights, Have 2000 rem 7 1/2 on hand. may have to try Nosler Varmagedon 40 gr. I have 55's for 22-250 but none lighter. Have about 1000 Hornady Z-max 50gr, and I see a least one place still has the 40gr. Z-Maz for 60.00 a 500

Last edited by Wyocaddis; 02-25-2019 at 04:43 PM.
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Old 02-25-2019, 06:53 PM
Wyocaddis
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found some loaded rounds for the Rem 222 COAL is 2.240 with 40gr. Hornady v-max.
Also measure my 17 HH magazine outside length is 2.270, naturally it has a internal block for a shorter 17 HH cartridge, much like rem or win, did to shorten internal magazine box.. Just don't know if the 527 magazine block is removable as the Remmy's and Win's were. Flangster stated the 223 mag was 1 tenth longer than the 222 mag. Is that a bottom metal issue, that one wont fit in the other? Or something else. Maybe I'm wrong but just don't see a company making 5-10 different magazines lengths for the same rifle (not cost effective) Blocking the internal length I can see. So the big question if I bought the 223 mag would it fit in the 222?
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Old 02-25-2019, 07:14 PM
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My impression was that they made 527 magazines two lengths. I don't think its a question of bottom metal; I think it is two different casings. To measure, I put my calipers at the top of the mag and measured front to back.
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Old 02-25-2019, 09:59 PM
Wyocaddis
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Originally Posted by flangster View Post
My impression was that they made 527 magazines two lengths. I don't think its a question of bottom metal; I think it is two different casings. To measure, I put my calipers at the top of the mag and measured front to back.
will your 223 mag fit in your 222 if not what is stopping it.
Thanks
Rick
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Old 02-25-2019, 10:14 PM
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Nope. The 223 mag is .10 inch too long to fit in the 222 action.

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Old 02-25-2019, 11:35 PM
Wyocaddis
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Thanks Flangster
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