22 Nosler CZ 527
- Thread starter Mark M.
- Start date
ASbobcat
Silver $$ Contributor
I suggest looking at the 22BR. The Nosler is a compromise intended for the AR platform, like the Grendel. You can achieve much more in a bolt gun with a proven cartridge like the 22BR.
2400fps w/75gr and RL17 for comparison.
Larryh128
Silver $$ Contributor
The issue is that the CZ 527 is a 223 bolt face. You can probably get about 3000 fps out of the 22 Nosler with a 75 gr, but 55's might be better.
Bully
Silver $$ Contributor
I've looked at this action and the Howa. Most likely I'll go with a Howa myself. I'm also curious if you are going to make it a single shot or repeater and if repeater, what mag you plan to use.
Good luck in your journey. You'll have a lot of naysayers but I think it's a cool cartridge with decent potential in a bolt gun.
Good luck in your journey. You'll have a lot of naysayers but I think it's a cool cartridge with decent potential in a bolt gun.
Just thinking out loud a bit here.
Does the standard small caliber 527's have a different frame cut than the 7.62x39 version? How easy is it to find the 7.62x39 bottom metal and magazines?
You might be better off getting a 527 in 7.62x39 so the magazine and action are set up correctly. Then the bolt face would be your concern. HOWEVER, you could just run 6.8 SPC or 6mm Hagar brass through a 22 Nosler die, then you'd have a 22 Nosler with a PPC/SPC bolt head. Might be more efficient in the realm of brass for the long run.
Does the standard small caliber 527's have a different frame cut than the 7.62x39 version? How easy is it to find the 7.62x39 bottom metal and magazines?
You might be better off getting a 527 in 7.62x39 so the magazine and action are set up correctly. Then the bolt face would be your concern. HOWEVER, you could just run 6.8 SPC or 6mm Hagar brass through a 22 Nosler die, then you'd have a 22 Nosler with a PPC/SPC bolt head. Might be more efficient in the realm of brass for the long run.
Not sure why you would say this. A compromise of what? Seems to me to be an excellent cartridge and am thinking my next build will be an F-Open single-shot bolt-gun with a 7" twist barrel optimized for the 90gr VLDs. For us recoil challenged wimps, this looks like a great round that will add 100-200fps to the .223R.
B23
Gold $$ Contributor
Don't forget Nosler has a "20 Nosler" in the works and it'll have a little larger case capacity than their 22 Nosler. The 20 Nosler will be nearly the same as the BR's case capacity. For shooting up to 55 grain bullets, the .20 is the better choice.
I think the little CZ 527 would make a sweet little rifle for, both, the 22 & 20 Nosler, BUT, getting them to feed through a CZ 527 magazine could be the issue and if it is/was you could always put a single shot follower in and go that route.
I think the little CZ 527 would make a sweet little rifle for, both, the 22 & 20 Nosler, BUT, getting them to feed through a CZ 527 magazine could be the issue and if it is/was you could always put a single shot follower in and go that route.
A 7.62x39 or 6.5 grendel magazine might work with the 22 nosler. The case dimensions aren't more than a few hundreths difference. Something to think about anyway.
curious about this. not a gunsmith, yet, but a nut. is this possible without going to a single shot? what do you use, a ton of freebore?
It is not only possible, it is commonly done. You can use a freebore in the .100" range and achieve it and your loaded rounds will have plenty of room left in the AI, MDT, Ruger, or Accurate .223 10 round mags. I have an 18" barrel on my .223 AI and I am shooting the 80's at 2,900 FPS with a freebore less than .100" and thick brass that sacrifices a little case capacity.
Clancy
Silver $$ Contributor
I don't want to quote several different posts, so I'll sum it up in a general statement because I've been down this road.
The 223 receiver needs the mag well opened up to accept the 7.62x39 bottom metal.
6.8 SPC diameter casings feed flawlessly from this setup.
Buy a 7.62 receiver then order a 223 bolt body and extractor.
If you do your own work, probably cheaper to buy the 223 and open up the mag well/trade for 7.62 bottom metal.
Worst case scenario you have to weld up the catch on the magazine and relocate it/shave the feed lips same amount.
Max comfortable COAL is 2.300"
The 223 receiver needs the mag well opened up to accept the 7.62x39 bottom metal.
6.8 SPC diameter casings feed flawlessly from this setup.
Buy a 7.62 receiver then order a 223 bolt body and extractor.
If you do your own work, probably cheaper to buy the 223 and open up the mag well/trade for 7.62 bottom metal.
Worst case scenario you have to weld up the catch on the magazine and relocate it/shave the feed lips same amount.
Max comfortable COAL is 2.300"
That sounds like the ticket.
I wonder about the bolt thrust with the extra velocity but I have had good luck calling CZ in Kansas and asking them. Since the 7.62x39 uses the same receiver (bottom metal is different as is the bolt) I would imagine it would work.
I shoot a CZ 527 with the .223 with 90s (I like the Sierra SMKs personally as they are better stabilized in a 7" twist barrel but many others are using the Berger VLDs. The BCs are not that different - G7 .257 vs. .265). My throat is cut so that the base of the shank is right at the base of the neck/shoulder joint (case mouth to ogive = .275"). No it will not enter the mag well - I use a delrin filler in the mag well. One must simply insert the bullet tip into the barrel slightly and drop it in. The extractor will jump over the rim but I prefer to have some slop in the filler block so that it rocks a but so the buller can be picked up normally by the extractor. The filler is made by the Bob Sled gent - called him and he made one for me as he used to stock them normally. Held in place by the magazine latch.
I have had excellent results with Varget - 24.8 or so should get you to about 2800 fps with retained velocity of 1500 fps or so at 1000. I just shot a 2-day Palma match this weekend and it worked as well for me as my .308/155 combination. With the .223 Nosler I would imagine you could hit 3000.
I shoot a CZ 527 with the .223 with 90s (I like the Sierra SMKs personally as they are better stabilized in a 7" twist barrel but many others are using the Berger VLDs. The BCs are not that different - G7 .257 vs. .265). My throat is cut so that the base of the shank is right at the base of the neck/shoulder joint (case mouth to ogive = .275"). No it will not enter the mag well - I use a delrin filler in the mag well. One must simply insert the bullet tip into the barrel slightly and drop it in. The extractor will jump over the rim but I prefer to have some slop in the filler block so that it rocks a but so the buller can be picked up normally by the extractor. The filler is made by the Bob Sled gent - called him and he made one for me as he used to stock them normally. Held in place by the magazine latch.
I have had excellent results with Varget - 24.8 or so should get you to about 2800 fps with retained velocity of 1500 fps or so at 1000. I just shot a 2-day Palma match this weekend and it worked as well for me as my .308/155 combination. With the .223 Nosler I would imagine you could hit 3000.
Interesting. I like the 527 size, esp with the HS precision stock. Only problem is both 223 varmint versions I had never shot well. I hope the Nosler version will be better. The cz 527 in 17 HH, however, is an amazing gopher getter.
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