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  #1  
Old 05-06-2010, 06:41 PM
Escbowhunt
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Improved ignition=Better Groups!



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Finding things to tweak my CZ 452 .22LR BR I have played with more than most with ignition, Firing pin body polished, FP Raceway polished, Tip reprofiled but what made the difference was the J&P spring! To test this I have shot about 50.00 of Eley ammo same lots with both springs and I quickly found out I got better groups with the J&P spring! Not sure why but everything is more consistent with the J&P spring, With the factory spring using a test lot of ammo I would get flyers made me think it was the ammo so I had to know, So same lot of ammo with the J&P spring great groups with no flyers? Its just one more link in the chain of accuracy!

Theron
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  #2  
Old 05-06-2010, 07:22 PM
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Yepper, just what I've been saying but you've done a good job of testing it out in your rifle. Faster, harder strikes make for more consistent ignition and that makes for better accuracy.
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Old 05-06-2010, 07:44 PM
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Thank both or you. We are firm believers that good springs are really what makes a gun run.
Pete
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Old 05-06-2010, 08:01 PM
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Gerald and Theron:

I purchased the springs from J&P but have yet to install them.The one issue that has held me up from installing the springs is the question of their effects on trigger pull weight.My 452's all have AS adjustable sears and springs set at one lb safe.Did your trigger pull increase after the install of the springs.

If not,then I will install tomorrow and it would also be another selling point for Pete.
Thanks,
Don

Last edited by skeeweebird; 05-06-2010 at 08:05 PM. Reason: Add comment
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Old 05-06-2010, 08:06 PM
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skeeweebird,

I have two Americans. Both have the triggers set at 10oz. Both have the JnP +10% fp spring and I have not seen any change in the trigger.

Craig...
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Old 05-06-2010, 08:44 PM
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Quote:
Originally Posted by skeeweebird View Post
Gerald and Theron:

I purchased the springs from J&P but have yet to install them.The one issue that has held me up from installing the springs is the question of their effects on trigger pull weight.My 452's all have AS adjustable sears and springs set at one lb safe.Did your trigger pull increase after the install of the springs.

If not,then I will install tomorrow and it would also be another selling point for Pete.
Thanks,
Don
Don the springs are part of my pre-shooting checklist these days, I don't have a Brno .22lr or CZ that doesn't have J&P striker springs, in the beginning I noticed no increase in trigger pull weight and now I wouldn't because the trigger work would be done at the same time. Now having said that, both myself and K22 (a mountain dwelling friend who's a member here) noticed a small increase in pull weight going to the Sako Quad striker spring and return spring, it wasn't much but I'd say something like a 4 to 8 oz. increase. I played around with some spring stock to still end up right at 14 oz. and K22 sent his off to Larry Gish. Just wanted to mention this in the interest of full disclosure.
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Old 05-06-2010, 08:51 PM
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Thanks for the super fast reply Cnelson! I appreciate your help!
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Old 05-06-2010, 08:51 PM
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Gerald,

Very good. I too did see an increase when I changed out my Sako Quad fp spring.

But to be fair, the replacement Sako Quad fp spring seemed (to me anyway) to be much stronger than the comparable CZ replacement spring.

On the CZ's I haven't seen any change.

Good call Gerald.


No problemo WorldWar. Happy to help.

Craig...
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Old 05-06-2010, 08:14 PM
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OK this thread finally pointed me in the right direction. I just ordered two, one for the Lux and one for the F/S.
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  #10  
Old 05-06-2010, 08:17 PM
cnelson181
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For all you "fence sitters" out there,

They also work really, really well in breathing new life into the Brno's.

Craig...
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  #11  
Old 05-06-2010, 08:19 PM
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I'm going to have to get a couple. I've been thinking about it for a while.
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  #12  
Old 05-06-2010, 08:10 PM
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That just did it, I've been stalling on getting my JnP striker springs in - when I get back home I'll be getting those springs installed pronto.
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Old 05-06-2010, 08:12 PM
skeeweebird
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Good deal Craig.Based on your experience I will install my springs in the AM.

Pete: Is this an issue you should get into your site?

Best,
Don
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  #14  
Old 05-11-2010, 06:57 PM
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Quote:
Originally Posted by skeeweebird View Post
Good deal Craig.Based on your experience I will install my springs in the AM.

Pete: Is this an issue you should get into your site?

Best,
Don
Well I didn't do what I said I would until today 5/11. Got springs installed in all 452's.Trigger pulls did not change to any detectable degree.

Best,
Don
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  #15  
Old 05-11-2010, 07:00 PM
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Excellent Don.

Did you get out and able to put some down range??

Craig...
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