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I used a micrometer to measure my 457 receiver for setting the depth for my Lilja barrel. I can't remember the shim combination, but setting the headspace to 0.040 solved the extraction problem I was having with it set at 0.043. Looking at a post I made on Rimfire Central I think I used a shim combination for .006. RWS variants work fine, but it was a little hard closing the bolt with Eley Club.What did you use for shims? I used .006, R50s went fine but Eley 10x and match were hard getting fired cases extrated ? Now went to .008, waiting for a warmer day. I'm new, any help from anyone is greatly appreciated ! I own 2 CZ 457 one has a bad bolt guide. Anyone else had same problem?
I went down to .005 for shims which I think sets HS for .040. It worked fine yesterday with 1 ejecting problem with Eley match.I sanded down barrel channel a little, put limbsaver on barrel and back to range. R50 were flawless, CCI was hard closing bolt and wouldn't eject all 3. Federal UM was no problem for all 7. Eley match which I want for that rifle was terrible today from the first shot that didn't want to eject. I think I went through 15 with 4 extracting properly. Came home and examined bolt, I couldn't find anything wrong. Time to talk to Carson? R50 averaged about 1moa today compared to about 1.25moa yesterday (limb saver).I used a micrometer to measure my 457 receiver for setting the depth for my Lilja barrel. I can't remember the shim combination, but setting the headspace to 0.040 solved the extraction problem I was having with it set at 0.043. Looking at a post I made on Rimfire Central I think I used a shim combination for .006. RWS variants work fine, but it was a little hard closing the bolt with Eley Club.
While I never measured them myself, CCI standards are reported to have thick rims which can give extraction/ejection hic-ups in some rifles.. I can tell you that they are the ONLY round to give me issues with positive extraction in my Savage B22 Precision. Fortunately, they are not the most accurate in this rifle so there is no need to chase that ghoul.I went down to .005 for shims which I think sets HS for .040. It worked fine yesterday with 1 ejecting problem with Eley match.I sanded down barrel channel a little, put limbsaver on barrel and back to range. R50 were flawless, CCI was hard closing bolt and wouldn't eject all 3. Federal UM was no problem for all 7. Eley match which I want for that rifle was terrible today from the first shot that didn't want to eject. I think I went through 15 with 4 extracting properly. Came home and examined bolt, I couldn't find anything wrong. Time to talk to Carson? R50 averaged about 1moa today compared to about 1.25moa yesterday (limb saver).
My 457 trigger was just OK. I couldn’t get it under 3lbs. I guess for most things that is OK, and for a factory trigger I understand why they wouldn’t go lower. Not much creep in it and i worked it up so that it was acceptable, but for precision work, I ordered Timney triggers for my 457 projects. Just got them today- new flat version of the Timney457 trigger.from what i read, the 457s have superb triggers unlike the 452 where you either had to play with springs until you got something decent. i always wanted one of them. They are super accurate right out of the box.
Are you talking about going beyond the use of the set screw for weight? I couldn’t get it below 3lbs, and that was with unscrewing the damn thing.It's really easy to mod a 457 trigger to go light. But if timney, or better yet triggertech, would make a two stage, I'd be all over that in an instant.
And there's a 6 month wait. Of course it would take timney or tt that long or more to do a 2 stage, so I might as well get on the wait list.......Triggers by Scar makes a two stage.
Worth the wait.And there's a 6 month wait. Of course it would take timney or tt that long or more to do a 2 stage, so I might as well get on the wait list.......
Mine was the same way. I could remove the set screw and it was still just under 3 lbs.Are you talking about going beyond the use of the set screw for weight? I couldn’t get it below 3lbs, and that was with unscrewing the damn thing.
I don't doubt it. It gets rave reviews. I didn't see a price on his site, I probably missed it. Are they $200 like the 455 2 stage?Worth the wait.
Yes, I think that includes shipping. I got mine a few months so I don’t remember. Mine is set up for BR, single stage 3oz. It’s just a matter of adjusting.I don't doubt it. It gets rave reviews. I didn't see a price on his site, I probably missed it. Are they $200 like the 455 2 stage?
I had 1.234 on depth, 1.191 on insert? length for headspace .043 is that right? Somewhere, maybe this thread CZ sets headspace at .046, I'm trying to figure all this out. On triggers- CZ down to under 6oz (cut spring), Timney 3-4oz.I used a micrometer to measure my 457 receiver for setting the depth for my Lilja barrel. I can't remember the shim combination, but setting the headspace to 0.040 solved the extraction problem I was having with it set at 0.043. Looking at a post I made on Rimfire Central I think I used a shim combination for .006. RWS variants work fine, but it was a little hard closing the bolt with Eley Club.
FWIW, both of my CZ's measured 0.046 via the "smashed solder" method...... Somewhere, maybe this thread CZ sets headspace at .046, .......
More on smashed solder method please...FWIW, both of my CZ's measured 0.046 via the "smashed solder" method.
FWIW, a simple 5 min spring change can get the 457 trigger down to 12-20 oz . I've done all 3 of my 457's to date and am 95% happy with them. That said, I was going to try a Timney in my latest build but was backordered. They were out of stock near everywhere I looked. You were lucky to get them. I just did the rifle that was destined for last night. It's set right at 15 oz.Are you talking about going beyond the use of the set screw for weight? I couldn’t get it below 3lbs, and that was with unscrewing the damn thing.
I just took a short piece of 0.062 rosin core solder, formed it into a "U" the same diameter of the rim of a cartridge, stuck it to the bolt with grease, closed the bolt. The outer edge of solder will get smashed and become the thickness of the headspace. Measure carefully with calipers. Kinda sorta similar to using plastigauge, but I couldn't find my old stash of plastigauge.More on smashed solder method please...
I just rec'd my new 457 LRP and I have the same problem. Did you solve it on yours and if so what did you do. Thanks,I have a failure to eject on the last round every time with my 457.
You can order the pin and spacer from the CZ store or Pete's Pillars (all metal DIP brand) on Ebay. I just converted a .17 hmr to .22lr with the DIP kit and it's nice quality. Sorry, I don't have it handy to measure. The pin fit is pretty critical and precise . I'd be surprised if there was an exact match off MC to be honest.Does anyone have measurements for the .22lr magazine spacer pin? I’m collecting parts for a 457 chassis build, I’ve got an extended mag release and will be getting an IBI barrel. I haven’t actually picked up a 457 yet, if I can find one of those pins at McMaster-Carr when I order a trigger spring I could go with a .17 or .22mag and have the option of a switch barrel. Thanks
I’m waiting on my second one.I just got another one of these in, 3oz., single stage. I really like these. It makes a world of difference when shooting bench rest disciplines.View attachment 7758000
So I had my CZ build apart last night to install an extended mag release so I took a measurement on the mag spacer pin too. It's .158" x .600". No taper on the ends. Whatever pin you came up with would have to be spot on. For the $6, I'd say just order the factory part when you get the spacer itself. hth.Does anyone have measurements for the .22lr magazine spacer pin? I’m collecting parts for a 457 chassis build, I’ve got an extended mag release and will be getting an IBI barrel. I haven’t actually picked up a 457 yet, if I can find one of those pins at McMaster-Carr when I order a trigger spring I could go with a .17 or .22mag and have the option of a switch barrel. Thanks
I couldn't close bolt all the way. Doing something wrong again? Maybe pics.?I just took a short piece of 0.062 rosin core solder, formed it into a "U" the same diameter of the rim of a cartridge, stuck it to the bolt with grease, closed the bolt. The outer edge of solder will get smashed and become the thickness of the headspace. Measure carefully with calipers. Kinda sorta similar to using plastigauge, but I couldn't find my old stash of plastigauge.
Hmm. Obviously I had to use a little force, but it wasn't hard. Couple things I can think of. I have real lead solder. Not the lead free stuff. Lead is softer. It's also rosin core, not solid.I couldn't close bolt all the way. Doing something wrong again? Maybe pics.?
Special solder for small stuff. I had to look in shop but I found.Hmm. Obviously I had to use a little force, but it wasn't hard. Couple things I can think of. I have real lead solder. Not the lead free stuff. Lead is softer. It's also rosin core, not solid.
Nice shootingFinally got my Element Helix mounted and zeroed. Did some ammo testing. SK Biathlon Sport really shined at 100 yards…..5 shots
View attachment 7759329
Happy with the look and performance. Was a good trade for a couple days weekend work.
(Sorry….no uodated pic with optic yet)
View attachment 7759332
Got an Anarchy Outdoor Titanium bolt knob to Cerakote and install. Oh yeah, and little guy was super quiet with the Tac Sol Axiom suppressor. Can’t wait to stretch it out with the SK Biathlon. Looking like fun. Wasn’t even looking for a bolt 22. Mainly been shooting a modded 10/22 with Volquartsen barrel, Tac Sol X-Ring SBX and Kidd Supergrade. This shoots considerably better. I was expecting good things from reading about the CZ’s but didn't expect this level of accuracy or consistency. The Lapua X-act and SK Pistol shot well too, but not like the Biathlon. Good thing I have a brick.
I just picked one up for my 457 from Snyder Precision (Cattleman99 on this site). Black Friday deal, shipped very quick.KRG Bravo for the CZ 457,
Is there any better source for best price other than KRG themselves? I found them on line, then the famous NOT IN STOCK at checkout.
My Pro Varmint shoots very well, better then I expected, 3/4 inch or better at 50 yards( sort of wondering if I should postpone the Lilja barrel on back order) just that the stock isn't comfortable to shoot, and heavy.
appreciate the input,
Have never gotten on the Bergara bandwagon, their centerfire rifles are fine but I've never been impressed enough to buy one, so I havent looked into it much.My MTR has cold bore issues. My At-One with the non match chamber out shoots the MTR. I have 3 of the 419 rails and have
no problem with them at all. I want the rifle to be comfortable to shoot and for it to fit me, not me contorting to fit the rifle.
I hated the small factory ball so I replaced it with a 419 knobs. Shortly after I replaced all three 419 knobs with Vudoo
knobs because they are somewhat nicer.
Have you considered the B14R steel bbl ? Why did you decide against it?
I’ve only shot my MTR vs. my Savage Mark II BV, so cannot comment on your first questions.- Any feedback on the Manners stock on the Precision Trainer? 457's are hard to get ahold of, but you can get the Manners version.
- If I go with a Area419 rail, is a raised comb a must? Seems like it would be from looking at how high it is, but pics can be deceiving.
Right - this helps. I was more wondering if its a known thing, where most guys are adding comb height, etc. If its not thats good news.I use the 419 rail on my MTR and for my face and scope, found that the simple addition of a 1/4” suede leather scope pad fits perfectly. Depending upon your cheekbone height, the Area 419 may or may not be slightly too high.
The Bravo uses a AICS sized mag slot which can make guiding those small CZ mags into place an Easter egg hunt. Most report that adding the Anarchy Outdoors Mag Well Filler designed for the Bravo cures any 10 round mag issues. ( There might be issues with 5 rounders if memory serves though ) I have no experience with the 457 and Bravo myself though.I just picked up a 457 barreled action and plan on putting it in a Krg bravo, I purchased an additional 10rd mag but didn’t realize till afterwards those may not work with the new chasis? will the 457 mags work or did I make a mistake?
But they also respond incredibly well to a simple spring change. I struggled to get any of my 457's below the 2# mark with factory adjustments. They were very decent but not quite as low as I wanted. A $2 spring change and I'm at 15 -20 oz on 3 different rifles. ( as selected).The 457s have superb triggers unlike the 452 where you either had to play with springs until you got something decent or the 455s where the same thing applied, but the set trigger pull was pretty awesome and a great shooter.
The KRG Bravo for the CZ457 uses the CZ factory mags. When you're on their website, be sure you are reading descriptions of the rim fire models, there are differences (for example, the tooless lop set up for rim fire is $49, the centerfield one lots more).I just picked up a 457 barreled action and plan on putting it in a Krg bravo, I purchased an additional 10rd mag but didn’t realize till afterwards those may not work with the new chasis? will the 457 mags work or did I make a mistake?
Pretty curious myself. I have both and don't have a favorite at this point, but I'm leaning towards the B14R for target and competition and 457 for hunting. I know way more competitors that shoot the B14R, but that could be my area.I wonder why there isn't a B14R sticky thread...........Like this 457 thread is. Hmm.