Cz455 .17hmr accuracy problems

[the shooter]

I have had a cz452 .17hmr and used 3 others and all where very accurate but my new cz455 .17 hmr is ****.

are they not as good, any one else having problems. 

[Walker570]

No problems here, puts them all in the same hole at 100 if I do my bit.  Does it have a mod fitted?  If so try it without, as I have heard a fair bit of complaining about bullets clipping them.

[haynes]

My 455 is 2years old no problem with accuracy with 4 different types of ammo. A few split cases after firing but that topic has already been done. 

[bornfree]

I had a 455 in WMR and never could get it better than 2" at 100 yards.

[team tractor]

I blame the ammo. I can shoot single hole on one box and 2” on the next.

[Saltings]

check the barrel is floating off the stock tap the fore end and see if it bangs against the barrel if so remove wood or bed the action to get clearance 

[la bala]

I think thats one of the first black marks I have seen against CZ, hope you get sorted.

[telf]

no problems with mine,very accurate , as said check moderator ,barrel floating etc

[the shooter]

Thanks for your reply’s. The barrel is floating fine and nothing seems loose or out of place. Bit windy at the moment but will try some different ammo and take off the moderator. I have had a .17hmr mod blow a hole out the side before but this is a brand new one. 

Never had problems with a new rifle before, it’s getting a bit frustrating 

[psycho]

Give it a good clean sometimes the wax coatings put on a new gun can clog the rifleing and a good clean is when you think the barrel is clean clean it again 

[turbo33]

I had a 455, absolutely awful! Tried everything, scopes, mods both on and off, barrel floating, action screws tight, crown, cleaned to within an inch of its life, different ammo. It would throw shots all over the place. I gave it back to the retailer I bought it from. 

A few weeks later, I had my brain more in gear, and looked over some targets. The fliers were completely consistent, as were the slightly more grouped 3 shots. What I think it may well have been, was some bad machining and the bullet being damaged on being cycled. I didn't certain if the two fliers were the first or last two shots fired. But I think it was almost certainly happening during feeding. Maybe the first two that are under more spring pressure from the magazine.

Try cycling and ejecting rounds without firing, onto a carpet, and see if the bullets are damaged in anyway. I would try a few magazines worth and check all of them, one at a time.

I later bought a 452, which was as most people experience, a very accurate rifle. I got bored with the ammo issues though, split cases etc, so changed to a 223. Now that is consistent accuracy!

Let us know how you get on.

atb

T33