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CB900F
Administrator Honor, Integrity Joined: 10 June 2003 Location: Eritrea Status: Offline Points: 8857 |
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Posted: 27 December 2010 at 14:01 |
Fella's; After some research, I've decided to do some up-grades on the CZ's. I've ordered a tool to make taking the bolt apart much easier, and there's a reason for that. It was both inexpensive ($10.00) and handy. I'm replacing the firing pin springs in the guns. I'm also replacing the screws that hold the action to the stock with allen headed units. It really is much easier to get a repeatable torque value with the allen head screws than it is with the slotted heads for flat blade screwdrivers. Besides, there's a lot less chance of slipping & having a flat blade screwdriver bit go skating across a blued finish, or worse yet, nice walnut. The stuff is coming from Boise Idaho, so the shipping time should only be a coupla days maximum. OTOH, we are dealing with Mr. Obama's very own postal (sorta) service. In any case, I regard the cost as moderate for the improvements and am anxiously awaiting the chance to fuss with my guns. 900F |
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Irish Bird Dog
.416 Rigby Too many Joined: 01 March 2009 Location: Midwest Status: Offline Points: 5511 |
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so why are you replacing the firing pin springs???? Do I a
have a problem in the making???? Edited by Irish Bird Dog |
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Irish Bird Dog
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CB900F
Administrator Honor, Integrity Joined: 10 June 2003 Location: Eritrea Status: Offline Points: 8857 |
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IBD; I waded through a very extensive thread about ignition/accuracy on Rimfire Central. Considering the very modest cost of the spring & bolt tool, I decided to do it on my guns. I know of no reason whatsoever that you'd have a problem with your gun if you don't do it. The whole idea is to increase the accuracy of the CZ452 platform. Reliability is not an issue according to the many pages I went through. The really nice thing is that it does not affect the trigger pull, just the firing pin strike force. 900F |
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Irish Bird Dog
.416 Rigby Too many Joined: 01 March 2009 Location: Midwest Status: Offline Points: 5511 |
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Interesting.........does the gain ie increased accuracy
come from faster lock time??? Keep us posted as to how it goes and if you can tell any difference in accuracy after the spring change. Wolf spring or Brownell's or ???? Never mind....I hopped over to the rimfire central site and found it is J&P springs...must be custom outfit as I never heard of them...been reading some of the posts..shor are some great testimonials out there for the spring change out....gunna be a long read....but then it's gunna be a long winter too.....take care CB & thanks for mentioning this bit...now is the tool named out there or do you have to get that info for me???? NEVER MIND...JUMPED BACK OVER THERE AND FOUND THAT INFO TOO. Edited by Irish Bird Dog |
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Irish Bird Dog
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Irish Bird Dog
.416 Rigby Too many Joined: 01 March 2009 Location: Midwest Status: Offline Points: 5511 |
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cb...THAT site over at rimfire central is
interesting....sure makes factory springs seem pretty poorly.... |
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Irish Bird Dog
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CB900F
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IBD; I certainly think that the factory firing pin spring is good enough for general use. Some of the BRNO's, made in the fifties, are almost certainly using the same spring and they're still going strong. But, considering the improvements in accuracy that are possible for under $25.00 (spring, plus bolt tool, plus shipping) I think it's worth trying. I got a set of the action screws too, which about doubled the amount, but what the hell, ya know? 900F |
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Irish Bird Dog
.416 Rigby Too many Joined: 01 March 2009 Location: Midwest Status: Offline Points: 5511 |
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I watched one of the videos posted on that thread and it
showed using a valve cap from a tire as the "tool" to push the end of the bolt on to get it apart....worked too....a good review of how to disassemble the bolt & back again. Parts of that thread also said (by the J&B guy) that the factory springs take a set and get "shorter" ie weaker over time. So, if that is true than surely would be worthwhile to do the spring change out. They also polished the mating parts too. Let me know how yours turns out. |
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Irish Bird Dog
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I'm not changing the springs in my BRNO!!!!
Edited by BEAR |
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CB900F
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Bear; So what BRNO you got? I gotta warn you, if you go over to Rimfire Central & get in the CZ/BRNO site, you'll find you why we refer to it as "the ward". 900F |
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CB900F
Administrator Honor, Integrity Joined: 10 June 2003 Location: Eritrea Status: Offline Points: 8857 |
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Fella's; Today, I changed out the firing pin springs in my CZ452's. Using the Bolt Buddy was a small chore, but not difficult to figure out. I didn't find the video I located to be a great deal of help. Fortunately, if you're mechanically inclined, it doesn't take a whole lot of thought to figure it out. Now, on to changing out the action screws. And that's such a minor process that it needs no further mention. What I am gonna do, is wait for warmer weather before going to the range! It's damn cold out there with a whole bunch of snow on the ground. I got a solid drift up against my back door that's almost as high as the window! And that's in a sheltered patio area too. 900F |
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CB, I have a Brno Brunner Model ZH349, double rifle. It is in 8x57 jrs which is simply a 8x57 mauser. I bought it in germany a few years back. In the USA they only import it in 458 mag, but I wanted something more huntable in the US. It has double triggers and a set trigger on one barrel. Heavy, but both barrels shoot sub MOA (not to the same POI unfortunately). but I've killed some wild boar and plenty of whitetails with it.
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CB900F
Administrator Honor, Integrity Joined: 10 June 2003 Location: Eritrea Status: Offline Points: 8857 |
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Bear; No, I don't think I'd fool with that myself. "A man's got to know his limitations." A quote well worth paying attention to. OTOH, I'm delving into the innards of my 77/22 & am replacing the factory sear witha Volquartsen unit & trigger spring. I may make a trigger overtravel stop for it too. I mean, a guy's gotta find something to do when it's cold enough to freeze the snot in a reindeer's nose right? 900F |
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d4570
.416 Rigby Joined: 27 January 2004 Location: United States Status: Offline Points: 9403 |
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YUP like get a set of wind proof wool bibs and go call coyotes!!!! |
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Remember: Four boxes keep us free ,the soap box, the ballot box, the jury box, AND the cartridge box
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MYCAWDS in February??? I have wind prood wool pants! |
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d4570
.416 Rigby Joined: 27 January 2004 Location: United States Status: Offline Points: 9403 |
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Why wait till February ? I saw a gopher the day after Christmas and we have already gone out shooting Prairie dogs... |
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Remember: Four boxes keep us free ,the soap box, the ballot box, the jury box, AND the cartridge box
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CB900F
Administrator Honor, Integrity Joined: 10 June 2003 Location: Eritrea Status: Offline Points: 8857 |
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Bear; I'm a-gonna let you in on a little secret. This here's the real deal, & if you thinks about it just a bit, you'll know it's true. If he's raggin' on me about gettin' out & callin' coyotes by typing messages like that there, he ain't out callin' coyotes his own self. Which could be taken, by low-life suspicious folks, as the pot callin' the kettle "black". If ya knows what I mean. It's a sad old world, & I think I'll go to the creek & drown my sorrows. 900F |
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Well, with all that cold and snow I hear about...those gophers must be 2 foot down under the snow or have snowshoes? The Creek is calling me...but my blood sugar is going wild....so I'll sit here (12o outside) and watch the buck eating in my back yard while I play 'smith and adjust triggers! This cast is really holding me back. flintlock season yesterday. no range time, except firing a little 22 flip-up P---y auto, that I'd be embarrassed to pull out of my sling in a gun fight. I'm so cabin happy, next week I'm going to start shooting the 38 J-frame. but it will be left handed and I'm going to shoot it with the gun sideways...the way the real bad guys do in the movies. |
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d4570
.416 Rigby Joined: 27 January 2004 Location: United States Status: Offline Points: 9403 |
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I hunt and fish 4 days a week ,work 2 and spend Sunday with the wife... Today is Sunday she is in here sewing and I'm "With her" |
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Remember: Four boxes keep us free ,the soap box, the ballot box, the jury box, AND the cartridge box
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How devoted But we know you also fish with her. And I hear she catches more and bigger fish than you. |
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