New CZ 527 Varmint, mini range report

General discussion and information about the 204 Ruger.
inKYfromSD
Senior Member
Posts: 158
Joined: Wed Aug 03, 2011 7:26 am
.204 Ruger Guns: CZ 527 varmint .204, Cooper Model 21 20 VarTarg

New CZ 527 Varmint, mini range report

Post by inKYfromSD »

Finally got out to shoot the CZ today. Temp was 50, slight mist, winds calm. Very dreary but the way it's been raining here this was going to be my only shooting window for a while.

Broke it in using a box for 32 gr Hornady factory. Shoot, clean, shoot, etc until the box of 20 was gone. Didn't get the target but it wasn't bad. I could NOT get any copper out of the barrel! I use Shooter's Choice and Montana Extreme for the copper but there was none. This rifle just keeps getting better.

First combination I'm trying is 32 gr SBK, Benchmark, and Remington 7 1/2 primers. The brass is Nosler "seconds" sorted and prepped. Ogive is 1.964". Before the rain started in earnest I managed to shoot 10 slow rounds in 5-shot groups. Cleaned between groups. Again, no copper. I forget to use the set trigger on the 4th shot of the 26.2 group and was sitting on the bench wondering why it hadn't broken yet then I yanked it, but not too awful bad. The shoulders only moved forward .002". Can't wait to get out again!

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jpx2rk
Senior Member
Posts: 128
Joined: Sun Aug 14, 2016 5:25 pm
.204 Ruger Guns: Savage 12FV, R783/20P combo
Location: East TN

Re: New CZ 527 Varmint, mini range report

Post by jpx2rk »

Looks like it will be a keeper.
Master Piddler ;)
Bill K
Senior Member
Posts: 2324
Joined: Tue Jan 18, 2011 10:00 am
.204 Ruger Guns: also now, a Savage switch bull barrel in 204R. 23 inch SS
Location: Lake Forest, Ca.

Re: New CZ 527 Varmint, mini range report

Post by Bill K »

Super start.. Bill K
smbob
New Member
Posts: 16
Joined: Mon Jan 06, 2014 8:20 pm
.204 Ruger Guns: CZ 527 Varmint

Re: New CZ 527 Varmint, mini range report

Post by smbob »

Nice! I own the same rifle. Give it a few rounds down the pipe and it will really settle down. Mine seems to like the 40gr V-Max or the Sierra 39gr BK with BLC2.

Robert
inKYfromSD
Senior Member
Posts: 158
Joined: Wed Aug 03, 2011 7:26 am
.204 Ruger Guns: CZ 527 varmint .204, Cooper Model 21 20 VarTarg

Re: New CZ 527 Varmint, mini range report

Post by inKYfromSD »

SMBOB, the TC I had liked the 32 gr SBK and 28.9 grs of BL(C)-2. Doesn't look like I ever tried the 39 SBK with anything other than RL10X. I have a few pounds of BL(C)-2 on hand, I'll definitely give that combination a try!
inKYfromSD
Senior Member
Posts: 158
Joined: Wed Aug 03, 2011 7:26 am
.204 Ruger Guns: CZ 527 varmint .204, Cooper Model 21 20 VarTarg

Re: New CZ 527 Varmint, mini range report

Post by inKYfromSD »

Finally got some pretty decent weather so I spent some time shooting a few test loads in the new CZ and the Cooper 20 VarTarg. The CZ really likes 26.2 grains of Benchmark behind a 32 gr SBK! there's a tad of horizontal stringing but it's still 1/2" edge to edge (the squares are 1/2 x 1/2). Five shot group at 100 yards. Round count is 85. This rifle keeps getting better with age. feeding from the magazine is a little rough though.

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So to keep from getting bored while the CZ cooled so it could be cleaned, I brought along my other small caliber rifle, the Cooper 20 VT. I loaded 25 "warmer" loads to test. I settled on 17.8 grains of H4198 after I bought it but never really tried much else. Appears that 18.0 grains behind a 32 gr Nosler might be the load to stick with. Need to address the vertical stringing someday, maybe. Again, 5 shot group at 100 yards.

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Moonax
New Member
Posts: 2
Joined: Sat Sep 02, 2017 4:34 am
.204 Ruger Guns: Cz 527 varmint

Re: New CZ 527 Varmint, mini range report

Post by Moonax »

Hello inKyfromSD
I have a new CZ 527 varmint thats rough feeding. Did your rifle get better as you used it?I have 30 rounds through mine
RowdyYates
Senior Member
Posts: 266
Joined: Sat Jan 02, 2010 4:51 pm
.204 Ruger Guns: Remington LVSF, Cooper M21V, C-Z 527 Kevlar V

Re: New CZ 527 Varmint, mini range report

Post by RowdyYates »

Yes; at least mine is getting smoother. To help feeding from the db magazine, I lightly stoned the burrs and sharp edges. I also "set" the stiff springs a bit lighter in the new mags by leaving three rounds in them when not in use.
Love this rifle, btw.
Moonax
New Member
Posts: 2
Joined: Sat Sep 02, 2017 4:34 am
.204 Ruger Guns: Cz 527 varmint

Re: New CZ 527 Varmint, mini range report

Post by Moonax »

Thanks, I'll try those tricks. I really like this rifle also
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