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  #31  
Old 04-17-2019, 01:21 AM
Rexshooter

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Quote:
Originally Posted by Paul_T View Post
AFAIK they are the same - they may have changed some lengths (as you point out with the lengths shown in the 2 American models). If you look at the 455 training it has a 24.8" barrel

I have read elsewhere 455/457 barrels are directly interchangeable so I suspect they are using the same tooling, reamers, etc....... the factory QC won't have changed.....

Interpret the last paragraph how you will.
https://cz-usa.com/product/cz-457-scout/


FWIW I have a 455 varmint thumbhole grey with both a 22LR heavy fluted and a 17HMR bull barrel and they both shoot great.
Hi Paul, Is your 455 Varmint thumbhole .22lr accurate in factury setting at 50yd? What type of ammo likes the rifle?
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  #32  
Old 05-11-2019, 07:35 PM
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Just Bought A CZ 457 MTR

Just bought a CZ 457 MTR. I mounted an old Bausch and Lomb Elite 4200 6 -24X scope on it, using the Burris offset rings, and a -30 MOA cant. I was able to put 2/5 rounds through a 2 X 3 inch hole in a plate steel at 200 yds, using CCI Mini Mag LR HP. When I moved in to 50 yds, and shot, from the bench, using Lapua Midas +, 4/5 rounds formed a .250 inch group. The 5 shot group was .400 inches. I've read that you should put a couple dozen rounds through the barrel before shooting for group size, but, I was just trying to see how this gun performed straight out of the box. I'm impressed.
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  #33  
Old 05-11-2019, 08:21 PM
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Quote:
Originally Posted by Al the Infidel View Post
If only one knew when they retool the reamers etc.. <img src="https://www.rimfirecentral.com/forums/images/smilies/cool.gif" border="0" alt="" title="Cool" class="inlineimg" />
Just buy a Lilja prefit and glue it in, mines a screamer and with Eley tenex will do sub .250 for ten shots. It's fitted into my 453 varmint and yes i had to do all the accuracy mods, like modifying the firing pin striking area.
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  #34  
Old 05-12-2019, 01:33 PM
fireman16
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457 seems to shoot

Just got a varmint barrel 457. Only have cheap ammo on hand right now. With American Eagles 38 grain hp/ I got 3/16" at 35 yards off the bench. With 40 grain I was getting 1/4" five shot groups at 35 yards and 3/8 with CCI Mini Mags. I have pics but can not post them. The rifle is totally stock and I was using a Nikon 6-20x40 scope.
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  #35  
Old 05-15-2019, 02:04 PM
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457 American in .17 HMR, purchased Monday. Cleaned, adjusted trigger to 2 lbs 2 oz, torqued action screws to 20 in/lbs. Shot yesterday, first time out.
Mess in the middle is five shots of Winchester 17 grain (won't make that mistake again, ~3" "group" & all five cases split), & some CCI to get a rough zero. POI changes due to minor scope adjustments between some groups to my preference. Cleaned every 25 rounds. Let sit to cool barrel ~30 minutes after each clean.
H - Hornady 17 grain V-Max, CCI - CCI 17 grain V-Max (another lesson learned- they're the same thing). Ten 5-shot groups Hornady averaged 0.550", eight 5-shot groups CCI averaged 0.531". Want to try some 16 grain all copper & 20 grain of some flavor, and will experiment with action screw torque. All in all, I'd call it a good start. Crown & other metalwork are good, stock inletting is better than on any of the (4) 452s & (2) 455s that I own/owned. Appreciate the shorter bolt throw & longer barrel (compared to my 452 & 455 Americans) but understand those are personal preferences & I'm probably in the minority on barrel length. Just like the balance a bit better. Too early (& heresy) to say it's my favorite CZ rimfire, but it's on that trajectory.

Sample of one, & worth what you paid for it

[IMG][/IMG]
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  #36  
Old 12-04-2019, 10:04 PM
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man, kind of wishing I had read this thread before ordering a 457 PV. Now instead of having the thrill of buying a new gun, I am almost dreading heading to the range for some accuracy testing. Guess all I can do is hope for the best!? I saw so many glowing reports on the 455, I was figuring I should be able to expect the 457 to be as good, if not better. Same barrels so it seems should be as accurate, shouldn't it? Please say yes??!!! Picking up the gun tomorrow and then range time Saturday and Sunday. Will bring along my Shaw-barreled Ruger PRR to shoot just in case. She can do sub 1/2 MOA all day long with the right ammo and me doing my part...just in case...
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  #37  
Old 12-04-2019, 11:20 PM
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jqar45:

I think you are worrying about nothing. My 457 shot lights out, out of the box (after cleaning and replacing the trigger spring).
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  #38  
Old 03-04-2020, 04:53 PM
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i was on the fence about getting one after reading this post but Iím glad I did..
Mine shoots great and the wood was pretty awesome too
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  #39  
Old 03-04-2020, 07:42 PM
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When new. I scrubbed my 457 barrels out with denatured alcohol. Then Hopps.
Run patches thru it till they come out clean.
They. The barrels are nasty from the factory.

Thats the first thing I learned, a year ago on RimFireCentral.
Scrub it good before.....break in.
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  #40  
Old 03-04-2020, 10:34 PM
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I've grown fond of cycling the bolt to remove a live round with the safety still on, besides every single tree rat of the couple doz. shot, dropping like a stone.
Bore looks quite passable via a bore scope IMA.
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  #41  
Old 03-04-2020, 11:37 PM
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Off the fence, ready for the range

Quote:
Originally Posted by BWstickman View Post
i was on the fence about getting one after reading this post but Iím glad I did..
Mine shoots great and the wood was pretty awesome too
After waiting to see that you guys had good shooting rifles, and seeing the minor birthing pains of a new platform corrected, I moved into the CZ rimfire future with you. An American and an At One have been adopted, and weather is all that is keeping me from the range to properly test my new toys.

Expectations are high.
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  #42  
Old 03-05-2020, 08:28 AM
flatlander
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Quote:
Originally Posted by jqar45 View Post
man, kind of wishing I had read this thread before ordering a 457 PV. Now instead of having the thrill of buying a new gun, I am almost dreading heading to the range for some accuracy testing. Guess all I can do is hope for the best!? I saw so many glowing reports on the 455, I was figuring I should be able to expect the 457 to be as good, if not better. Same barrels so it seems should be as accurate, shouldn't it? Please say yes??!!! Picking up the gun tomorrow and then range time Saturday and Sunday. Will bring along my Shaw-barreled Ruger PRR to shoot just in case. She can do sub 1/2 MOA all day long with the right ammo and me doing my part...just in case...
I bought a 457 VPT w/24" threaded bbl several months ago, and found a heavily leaded spot about an inch ahead of the chamber that appeared to be about 1-1/2" long - this was before I put a single round down the bore, as I was cleaning the bore of a brand new, just out of the box rifle. Looking through my Hawkeye borescope, it appeared as an area of vaporized leading all around the bore, instead of lead streaking on lands & grooves that I'm used to seeing when dealing with 22RF leading. I used a bronze bore brush & Ed's Red solvent, and got it all out with fewer than 10 back & forth strokes. The bbl shot mediocre groups for the first 100rds or so, then began to tighten up as the round count increased. Thankfully, regular inspections with the borescope revealed no further tendency to repeat the leading in the area I'd found it in. The mystery to me is, how did that leading get there in the 1st place, if the factory only puts a few test rounds through new barrels after installing them on an action?

Whatever - I doubt you'll need to worry about accuracy out of your new VPT - part of the reason is the excellent inlet job Manners does on the VPT stocks, and the thicker rear recoil lug they glue in when building these stocks.
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  #43  
Old 03-05-2020, 10:48 AM
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Flatliner, just a thought. Could the heavy leaded area have been excess bluing or whatever finish they use on their barrels from the factory?

Also, is there any reason we shouldn't glue or bed in the recoil lug on the new CZ's? Mine falls out every time you remove the stock.
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  #44  
Old 03-05-2020, 11:28 AM
flatlander
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45ACP223 - No chance that what I saw using the borescope was anything but lead fouling. I'd already put several patches of Ed's Red through the bore, but kept getting dirty patches, which is why I dry-patched & then went in with the borescope. I could see that all those patches had worn the leading just enough to have an effect on its appearance; after brushing, it was gone, but there was the slightest bit of something left in there - just enough to tell where the leading had been. I've never seen anything like it before or since, so it's a mystery to me what caused it in the first place.

I thought about gluing in the steel recoil lug on my 457 American & MTR, but haven't done so yet. Seems to me like it'd be just as well - or maybe better - to mill a lug out of aluminum that would be a snug fit in the lug slot of the action tang, then glue it in. IOW, just copy what Manners did, and that would likely be as good as any other idea.
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