Old 08-16-2008, 07:14 PM   #1
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CZ452 American screw torque

Hi everyone, I recently bought a TS35 Utica torque wrench, and thought I would have a play with it.

I checked the 3 screws around the trigger guard ( what is the correct name for these?), and they were quite loose. The rifle has been shooting very good groups for a newbe like me.

The 452 had a trigger job done by the Gun shop prior to me picking it up. I torqued the screws to 18lb, and the groups seemed to open up and produce flyers. ( I was trying different ammo at the time also, but some were brands I have used before with great results ).

I backed the scews off again, and it seemed to improve. I retorqued them at 12lbs when I had the chance, and it shot some better groups. It was a cold, clear windy day (on and off ) here in Australia, and I am not sure if that has some bearing on things.

Anyway I am not happy with things!, It was shooting better before ( Or was it just me, or the changed weather conditions? )

I had also retorqued my Enfield NO4 with my new wrench, and it also was not shooting quite as well as last time. I did give it a go at the .22 target at 50 yds and did get a bullseye, so I guess it is not all bad. At 100yds not so great.................................

Isn't shooting great!, the more you try things, the worse you get, oh well, I guess I just have a hell of a lot to learn......................

Comments from the floor about torque values would be appreciated. I realise that this has been talked about before, but I am confused about the various CZ models. The varmits have different screw set ups, don't they?

Regards, Steve
Ps. I also checked to see if the barrell is floated. It is, you can pass a piece of paper right up to the receiver both hot and cold.
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Old 10-04-2008, 09:18 PM   #2
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Desmo--been there and done that, but hang in there as the right torque settings do make a difference. I installed hex-head action screws on my 452 Varmint and headed to the range with high expectations. Boy was I upset. My .2" shooter had become a 1.2" shooter at 25 yds. Went home and asked for some advice on Rimfire Central, and was told "follow the instructions that came with the screws". When I finally got things reinstalled per the instructions, and got back to the range, things began to look up. Decided to start at the lowest setting on my torque driver (6 inch-lbs) and work up from there. Got to 8 in/lbs and 8 (front and rear) and things began to look up, so I upped the front to 10 in/lbs and left the rear at 8--more improvement. So, it was 10 & 10, then 10 rear and 12 front and that was the key. Here are the targets I shot today (click on picture to enlarge):
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Old 10-05-2008, 06:00 AM   #3
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Good shooting!
thanks for the reply
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Old 11-19-2008, 02:22 PM   #4
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It's def a "one step at a time" operation to get them set correctly. Just remember to write down the settings somewhere when you are done. Or you'll have to repeat the whole process later like someone I know, LOL !!
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