CZ 455/457 barrel change

[Sharps '74]

How many of you are torquing the screws as recommended by CZ when you switch barrels?

Is it worth investing in a hand held torque wrench for the purpose?

 

[grauhanen]

I seem to recall CZ's recommended barrel screw torque was 5 Newton meters (44 inch pounds). Folks more knowledgeable than I am have discussed this on RFC and recommend barrel screw torque to be 30 - 35 inch pounds. The problem with the higher torque is that it risks distorting the chamber.

 

[skwerl]

I torque to the factory specs. ,as above .

There is some discussion about tightening ''push'' screws
as opposed to ''pull'' screws and the different torque requirements.

I am not a physics engineer therefore I couldn't tell you the diff.

 

[Sharps '74]

I'm neanderthal.

I know "hand tight" and "Jeezus, who tightened this damn thing?"

I'm also famous for stripping a thread and backing off half a turn.

Works for me ..... ;>)

 

[grauhanen]

I'm neanderthal.

I know "hand tight" and "Jeezus, who tightened this damn thing?"

I'm also famous for stripping a thread and backing off half a turn.

Works for me ..... ;>)

If you want a consistent and reliable fit between receiver and barrel, get a torque screwdriver. It can also be used to adjust action screws to consistent and reliable torque as well as scope rings. Of course if you're just plinking at the range or gravel pit, save your money for a Bucket O' Bullets.

 

[Sharps '74]

How much is a hand held torque wrench gonna cost me and who's got 'em?

 

[stuckon308]

They are invaluable when mounting scopes as well. Consistent torque every time.

 

[Meroh]

They are invaluable when mounting scopes as well. Consistent torque every time.

Not that much, I got mine at Amazon. Came calibrated and certified.

 

[fljp2002]

About $75 at bass pro if memory serves me right

 

[cam1936]

Just buy a cheap beam style torque wrench from princess auto for $10. Cheap beam style wrenches are generally quite accurate (it's a lot easier/cheaper to make a beam style wrench accurate than a click style.) They are more annoying to use than click, but if you only need/use it on occasion it's no issue.

 

[FarmerDanz]

Where are you guys finding barrels? I'd love to grab a 17 hmr or WSM barrel

 

[skwerl]

Where are you guys finding barrels? I'd love to grab a 17 hmr or WSM barrel

I didn't find a barrel to change so I
swapped an MTR .17 HMR to a 455 Evolution .22
and vise versa , Just for Grin's .

 

[grauhanen]

Just buy a cheap beam style torque wrench from princess auto for $10. Cheap beam style wrenches are generally quite accurate (it's a lot easier/cheaper to make a beam style wrench accurate than a click style.) They are more annoying to use than click, but if you only need/use it on occasion it's no issue.

Make sure it's in inch pounds, not foot pounds.

 

[MisterJ]

Slightly off topic but where can you buy CZ barrels here?

 

[Sharps '74]

How well do you handle rejection? If you can find a source, share it with us.

 

[Jefferson]

P&D enterprise in Edmonton a site sponsor had some last year

 

[northbranchon]

I did buy a Fat Max torque wrench after taking my CZ 455 stock off a couple times for trigger work and it did make a difference in accuracy. I did adjustments on mine at the range and felt it was a worthwhile purchase. I think I ended up just under 40lbs.