CZ 452 Varmint 17HMR and V-Max ammo? I'm not happy. - RimfireCentral.com Forums

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Old 10-03-2011, 05:54 PM
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CZ 452 Varmint 17HMR and V-Max ammo? I'm not happy.



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So far, I have used Hornandy's V-Max ammo and I'm not happy with it's accuracy. Up to 3" groups at 100m. I've yet to try Federal, CCI, Remington and Winchester and even though they all come out of the same factory, they are "apparently" made to a different specification. I've seen enough proof online to support this. So my question is, out of the V-max ammo, which is most accurate in your CZ 452 17HMR rifle? I will try all of the variants to see what my gun likes best, but just wanting to hear from others.

Thanks.
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Old 10-03-2011, 06:01 PM
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I've only shot my Varmint 17HMR at 50 yards, but of the CCI tnt, winchester vmax, my gun liked the hornady 17 grain V-max the best. They all seem to shoot small cloverleafs at 50 yards, with CCI non v-max tnt's hitting a bit lower. But i've always found the hornady to be the best, but just barely. Could just be me though. I find im not always very consistent on the bench

Whats you set up like? Scope? How many rounds have you fired through this gun? At my shooting level I'd be happy to shoot 3'' at 109 yards
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Old 10-03-2011, 07:12 PM
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Quote:
Originally Posted by bigsnorlax View Post
Whats you set up like? Scope? How many rounds have you fired through this gun? At my shooting level I'd be happy to shoot 3'' at 109 yards
Scope is a Zeiss Conquest 3-9x40mm. Only shot about 50 rounds and barrel was cleaned after each shot for the first 10 shots, then celaned after 5 shots for the next 20 shots.
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Old 10-03-2011, 07:17 PM
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My CZ 452 varmint loves CCI Full Metal Jacket 20 grain bullets, it groups the best with this bullet and load.
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Old 10-03-2011, 07:18 PM
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I have never followed through with the "break in" procedure, but mine does shoot best after i run some rounds through it. However i do clean the barrel much more than my .22 as it fouls up a lot faster, but i tend to let it be unless groups start suffering. Your mileage may vary of course
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Old 10-03-2011, 07:20 PM
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Hornady 17s shoot best in my 452 followed closely by Winchester 17s. She is scoped with a 6.5X20 Leupold. She will shoot most any 17 grain ammo into a MOA at 100 yards. A recent trip to SD for PD resulted in kills to 230 yards in calm wind and of 7 rifles, including 3 custom built 223 varmint guns, shot by 3 shooters, was voted to be the most fun on the trip. I intend to keep her for a long time.
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Old 10-03-2011, 07:21 PM
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I have tried several different brands with the 17gr vmax in my 453 fluted varmint. However, it shows a definite preference for the hornady 20gr XTP over any of the 17 gr loadings.
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Old 10-03-2011, 07:23 PM
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Smile CZ 452 Varmint 17HMR and V-Max ammo?

Oct. 4, 2011
Dear Jamster:
I have had good experiences with CCI .17 HMR 17 grain V max loads that differ a bit from the Hornady. Try them. Also, you must beware of fouling when using Hornady's 17 grain V max load. After about 30-40 rounds in the 1turn in 9" rifled bore sometimes you can collect a lot of caked fouling in the grooves, which gives a nice puff of dust- burnt powder plus priming compound- when you brush from the breach. I can usually see it for three strokes of the brush, breach out of the muzzle. The .17 HMR seems sensitive to fouling, so give it a mild three strokes from the breach every 30 rounds or so. Not everyone encounters this unexpected problem, but I did, so you might. Also, try the 20 grain loads, they shot accurately for me at 200 meters.
Don't abandon hope for accuracy with the Hornady 17 grain V Max. Shoot it from a clean, dry bore. My rifle has steadily become more accurate with it- shooting in, as they say. Be patient, observe carefully and take notes on the performance of the loads you use. I see a Commonwealth flag by your name- Australia by the stars- so I reckon your ammo costs high, which will sharpen your concentration on the problem. Good shooting to you!

Last edited by William Harper; 10-03-2011 at 07:27 PM.
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Old 10-03-2011, 07:27 PM
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Quote:
Originally Posted by jamster View Post
Scope is a Zeiss Conquest 3-9x40mm. Only shot about 50 rounds and barrel was cleaned after each shot for the first 10 shots, then celaned after 5 shots for the next 20 shots.
That barrel is still a baby and it should settle down eventually. My two CZ .17hmr's have been improving a little impovement each time and I wouldn't take the first 50 rounds too serious.

Also, I'd try a box without cleaning as some CZ's like to be dirty.
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Old 10-03-2011, 07:39 PM
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Copper fouling comes easy, time to clean ?

Us rimfire shooter used to the .22 lead bullets can shoot thousands of rounds without cleaning if we wish, and still get super accuracy. The copper jacketed bullets on a .17 will mess up accuracy in short order. Clean it with Hoppes #9 to get rid of the powder fouling, then with a copper solvent and go back and forth until the barrel is clean. Then try it out and see if that has solved a good part of your problems. Good luck with it.
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Old 10-03-2011, 08:21 PM
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I'd take a close look at the crown.
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Old 10-03-2011, 08:45 PM
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I'm thinking that the bore needs more frequent cleaning. My Varmint in 17 took about 500 rounds before it settled down into an MOA shooter. The 17 bores need a good break in as they are very fouling sensitive.

By all means try some other ammo, and clean it after every 10-15 rounds.
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Old 10-04-2011, 06:06 AM
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I found with my Anschutz that cleaning at least every 50-70 rounds was required for truly gilt-edged accuracy, usually no more than a wet patch (with a copper cleaning solution) followed by a few dry patches. They're all different. If its really bad call CZ.
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Old 10-04-2011, 06:07 AM
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Quote:
Originally Posted by gunzup View Post
Hornady 17s shoot best in my 452 followed closely by Winchester 17s. She is scoped with a 6.5X20 Leupold. She will shoot most any 17 grain ammo into a MOA at 100 yards. A recent trip to SD for PD resulted in kills to 230 yards in calm wind and of 7 rifles, including 3 custom built 223 varmint guns, shot by 3 shooters, was voted to be the most fun on the trip. I intend to keep her for a long time.
Just a note, the Style sold the next day.....lol.
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