CZ 455 hmr wow!!!

customrifle

Hi Lads, if any of ye are in the market for an accurate 17 look no further than the cz. I picked up the 455 thumbhole varmint at the w end and just got to scope it up and get it on paper at 50 yards then but today I did some plinking at 100 yards and I'm blown away with the accuracy out of a rifle that came in a fraction over 600 quid new with a Sak mod.
A five shot group produced a ragged little group the size of your baby finger nail at 100 yards with the federal ammo. And it only has 40 rounds through it so far, what's it going to be like when it's run in. I had a sako quad in 22 mag that was nice but not as nice as this.
The thumbhole stock has a lovely feel to it too the only fault I have with it is the trigger which while having no creep is quite heavy so you really have to focus on your trigger control but a yo Dave kit should solve this.
All in all really happy with this little rifle just have to blood it now

One shot on kill

Accuracy like that blooding it shouldn't be any problem.

Can they be got without the thumb hole.

German pointer

I bought one 3 months ago still waiting on the sub from the .22 to come through long wait for a sub. I can't wait to give it a go

The other thing about them is the interchangable barrel

customrifle

The thumbhole stock seems to be most popular here, I'm sure you prob can get different one. The federal ammo just works very well in the rifle, tried some Remington in it aswell but wasn't patch on federal

garv123

customrifle wrote: »

The thumbhole stock seems to be most popular here, I'm sure you prob can get different one. The federal ammo just works very well in the rifle, tried some Remington in it aswell but wasn't patch on federal

Federal ammo is far better than any other I tried in my marlin..
Not planning to change from it anytime soon. hornady is dirt and prone to split cases.

customrifle

And at 15 quid a box the federal ammo is great value too :-D

German pointer

After the above posts I'll have to make the federal my first choice to try are ye using 17 or 20 grain

customrifle

Using the 17gr b-tips. You won't be disappointed:-D

Cass

I invested in one some 3 months ago, and have loved every minute with it since. Little heavy for all the size of the caliber, but a tack driver of a gun.



Since i took this picture i replaced the scope with a Hawke Sidewinder. Little more weight but i prefer it.

I tried three brands of ammo:

1. Federal 17gr (b-tip) - Best, tightest and most consistent round. Gav clover leaf at 100 and between 3/4" - 1.5" groups (depending on my shooting) at 200 yards
2. Remington 17gr (b-tip) - Good groups, and tigther than the Hornady, however got more than one flyer at times when shooting in groups of 5. Would be my second choice bullet.
3. Hornady 17gr - Gave decent groups, but most were vertical. So horizontally they measured less than 1/2", but vertically they were about an inch. No mis fires, or split cases. Third choice round.

I have since changed all ammo over the Federal. Having said that i'd happily pick any of three and knowing that the zero for all three is the same would confidently take a shot out to 200 with her..

The issue i had was the trigger. I though it was heavy but when i measured it, it was over 5.5lb of pull. So much that at one sage i thought i had the safety one.

Thanks to Dev110, i got a spring, and shim kit for it. I alternated, but found that i either had a slight reduction in pull or it was gone altogether and it would not pass a bump test. To solve it i removed the shim, put in the lowest tension spring, and hey presto. A nice crisp 1.25lb pull. Perfect (for me anyway).

I haven't been to the range since, but intend to head over tomorrow and will test her again with the improved trigger. I love the thumbhole stock on it. The feeling of a good tight grip is something i find missing in other rifles. So even with the weight it's completely manageable.

Mezamo

+1 the federal Vmax runs very sweetly in mine

yubabill1

3.Hornady 17gr - Gave decent groups, but most were vertical. So horizontally they measured less than 1/2", but vertically they were about an inch. No mis fires, or split cases. Third choice round.

Vertical stringing often points to the trigger/your release.

Just a casual observation, don't doubt you got good results with the other brands.

Cass

yubabill1 wrote: »

Vertical stringing often points to the trigger/your release.

You're dead right it was the trigger hence the reason i said:

Cass wrote: »

The issue i had was the trigger. I thought it was heavy but when i measured it, it was over 5.5lb of pull. So much so that at one stage i thought i had the safety one.

Ive not gotten a chance to try the rifle at the range since the trigger job. However when i got better results with the other two, even with the trigger as it was, i rated them as better than the Hornady.


As i said above i'd hate to live on the difference between the three. They all performed very good at 100 and 200 yards. Just some stood out that little better than others.

juice1304

All .17hmr ammo is loaded in the same plant on the same machines. It is all loaded by CCI.

CCI, Federal, Winchester, Remington and Hornady all loaded here at CCI in Lewiston, Idaho with a V-max bullet are identical, with the exception of tip color. Manufactured on the same equip, to the same ballistic specs, using the same components other than color of the tip of the bullets. Obviously the shellcase 'head stamp' and packaging would be different on the various products.

Linda Olin
CCI/Speer Technical Services
2299 Snake River Ave.
Lewiston, ID 83501

Cass

Interesting.

Would explain why there is so little difference between them, yet there is a difference.

customrifle

I don't think I'd need the shim from the kit in my trigger as there is no creep in it so I'll just have to change the spring as the weight is quite heavy. I'm just amazed at the accuracy of the rifle off bipod with heavy trigger and just have Burris 9x scope on it. Usually when I shoot groups like that it's with a 32x or 25x scope. I think alot of it is down to how well the stock fits. Serious rifle and not just for the money

garv123

Cass wrote: »

Interesting.

Would explain why there is so little difference between them, yet there is a difference.

It doesnt explain why hornady ammo is brutal for split casings though. from about 9 months onwards everyone was giving out about them, all over UK and US forums. I never noticed till I was wasting 10 round before using federal and out of 11 cases 9 were split.

Cass

I've heard a good few lads talking about this, yet in 150 rounds of Hornady i've not gotten one. I've 50 rounds left, and don't expect to see one in the box.

garv123

Cass wrote: »

I've heard a good few lads talking about this, yet in 150 rounds of Hornady i've not gotten one. I've 50 rounds left, and don't expect to see one in the box.

Could have been sorted in newer batches but every second thread was about it giving out. It does seem to have quietened off now though.

ronn

I picked a cz 455 with the American stock, I just prefared the looked of it. Using 17g hornady in it. No sign of any split cases.
Still looking to get my first fox,
I was told the 20g hornadys a better on the foxes???

hedzball

ronn wrote: »

I picked a cz 455 with the American stock, I just prefared the looked of it. Using 17g hornady in it. No sign of any split cases.
Still looking to get my first fox,
I was told the 20g hornadys a better on the foxes???

Can the american barrels be swapped out handy enough? I hate thumbhole stocks.. but the american in 22lr and 17hmr would tickle me all day . :cool::cool:

ruger1894c

hedzball wrote: »

Can the american barrels be swapped out handy enough? I hate thumbhole stocks.. but the american in 22lr and 17hmr would tickle me all day . :cool::cool:

In 455 they can be swapped out same action same barrels just different stock

German pointer

hedzball wrote: »

Can the american barrels be swapped out handy enough? I hate thumbhole stocks.. but the american in 22lr and 17hmr would tickle me all day . :cool::cool:

On phone so can't link but some good video on YouTube showing how handy its done.

nedcbr6

Hi there the 17. Cz looks savage am think of getting 1 myself but don't know what size barrel to get with it 16 inch or the 20 inch what is the barrel size on yours ????
Cheerz

Cass

Is that for me?


If so mine is the 20". They're a heavy little bugger of a rifle, but the 16" barreled one is better balanced than the 20" making the weight difference seem more than it actually is. I was originally going for the 16", but changed dealers at the last minute to do a multiple firearm change and all he had was the 20". As barrel length wasn't that important to me i went for the 20" for the sake of doing the three gun deal in the one dealers.

ronn

I went for 16" barrell, find it easy on the shoulder.

Got mine from john lambert in camolin. Pleasure to deal with

nedcbr6

Savage looking gun what size barrel is on it and what moderator on it ???
Cheerz

nedcbr6

Looks savage what size barrel is on it ???
Cheerz

Cass wrote: »

I invested in one some 3 months ago, and have loved every minute with it since. Little heavy for all the size of the caliber, but a tack driver of a gun.



Since i took this picture i replaced the scope with a Hawke Sidewinder. Little more weight but i prefer it.

I tried three brands of ammo:

1. Federal 17gr (b-tip) - Best, tightest and most consistent round. Gav clover leaf at 100 and between 3/4" - 1.5" groups (depending on my shooting) at 200 yards
2. Remington 17gr (b-tip) - Good groups, and tigther than the Hornady, however got more than one flyer at times when shooting in groups of 5. Would be my second choice bullet.
3. Hornady 17gr - Gave decent groups, but most were vertical. So horizontally they measured less than 1/2", but vertically they were about an inch. No mis fires, or split cases. Third choice round.

I have since changed all ammo over the Federal. Having said that i'd happily pick any of three and knowing that the zero for all three is the same would confidently take a shot out to 200 with her..

The issue i had was the trigger. I though it was heavy but when i measured it, it was over 5.5lb of pull. So much that at one sage i thought i had the safety one.

Thanks to Dev110, i got a spring, and shim kit for it. I alternated, but found that i either had a slight reduction in pull or it was gone altogether and it would not pass a bump test. To solve it i removed the shim, put in the lowest tension spring, and hey presto. A nice crisp 1.25lb pull. Perfect (for me anyway).

I haven't been to the range since, but intend to head over tomorrow and will test her again with the improved trigger. I love the thumbhole stock on it. The feeling of a good tight grip is something i find missing in other rifles. So even with the weight it's completely manageable.

Cass

nedcbr6 wrote: »

Savage looking gun what size barrel is on it and what moderator on it ???
Cheerz

nedcbr6 wrote: »

Looks savage what size barrel is on it ???
Cheerz

Cass wrote: »

Is that for me?

If so mine is the 20".

It's a 20" barrel with SAK mod. The mod completely comes apart for easy cleaning which you will need as the .17hmr is a dirty, dirty round. You'll accumulate a serious amount of fouling after only a small amount of shots.

As said above the 20" barrel is slightly heavier and not as balanced as the 16" barreled version. However at 20" and 25" (or so) with the mod on it's not cumbersome or awkward to carry/use. I'm used to using my other rifle which are 22" & 24" with reflex mods making them 26" & 28" maximum length.

German pointer

[QUOTE=Cass; the .17hmr is a dirty, dirty round. You'll accumulate a serious amount of fouling after only a small amount of shots.

After how rounds would you need to scrub out the barrel and how many fouling shouts are needed for it to settle back down again and I understand every barrel is different

Cass

Cannot give you a definitive answer as i treat the ,17 differently to my other rifles.

I clean the mod quite frequently. Say every 35 - 50 rounds as it's easy done. The barrel however i leave for some time. Perhaps every 150 - 200 rounds. The rifle shoots more consistent and, to me, better when dirty so i don't clean frequently. However if i leave it up for some time without use i'll clean or if using more frequently i'll clean a little more regularly.

The bullets are copper coated/jacketed, unlike .22lr which are simply lead. So a quick clean with a lead & copper cleanser sorts her out. When i do it's usually 5-10 rounds before she is back tack driving although it's never that far off from spot on even directly after the clean.

It's all about personal choice. Some may clean more often, others almost never. unless it's over a prolonged amount of time i see no reason to clean unless it's loosing accuracy due to excessive fouling.

nedcbr6

Sorry yes just saw the 16" on top of the ad just making sure..
Was at a gun dealer all he had was the 16" but like the look of ur 20" cz and mod..
Think I'll be phoning him see if he can get me the 20" barrel ..
And Ur were saying not too much extra wght ??
Cheer for all Ur help Cass

Cass wrote: »

It's a 20" barrel with SAK mod. The mod completely comes apart for easy cleaning which you will need as the .17hmr is a dirty, dirty round. You'll accumulate a serious amount of fouling after only a small amount of shots.

As said above the 20" barrel is slightly heavier and not as balanced as the 16" barreled version. However at 20" and 25" (or so) with the mod on it's not cumbersome or awkward to carry/use. I'm used to using my other rifle which are 22" & 24" with reflex mods making them 26" & 28" maximum length.

Cass

nedcbr6 wrote: »

And Ur were saying not too much extra wght ??

The rifle is a little weighty regardless of barrel length. The heavy barrel, laminate stock coupled with a scope makes them a little heavy.

The difference between the barrels is better described in terms of balance. While the additional 4" of barrel can add some weight (at a guess just over 1/2 pound) the issue is that extra 1/2 lb further out from the balance point (fulcrum if you will) of the rifle makes it somewhat nose heavy. The mod adds so little in terms of weight that it's almost unnoticeable.

I went for the 20" primarily because it was what was in stock, i'm not fussed about 20" or 16", and from a personal point of view the 20" would provide better stability for the bullet as it can complete 2 full revolutions in the 20" barrel whereas the 16" would not allow. Now there is no ballistic reasoning or even proof that one is better or worse than the other especially given that one is 2.25 revolutions and the other 1.85. It is just personal choice again.

Lastly, and while not a huge factor in terms of buying there is a long standing issue among shooters, and shooting forums regarding barrel length. To shorten a barrel below 20" is illegal. To buy one with a shorter barrel than 20" is a grey area as technically it's illegal, but not if you have authorisation which your license stands as. So while not a primary reason it was always in the back of my mind that if circumstances change in terms of the law then my rifle is legit regardless.

German pointer

Cass wrote: »

Cannot give you a definitive answer as i treat the ,17 differently to my other rifles.

I clean the mod quite frequently. Say every 35 - 50 rounds as it's easy done. The barrel however i leave for some time. Perhaps every 150 - 200 rounds. The rifle shoots more consistent and, to me, better when dirty so i don't clean frequently. However if i leave it up for some time without use i'll clean or if using more frequently i'll clean a little more regularly.

The bullets are copper coated/jacketed, unlike .22lr which are simply lead. So a quick clean with a lead & copper cleanser sorts her out. When i do it's usually 5-10 rounds before she is back tack driving although it's never that far off from spot on even directly after the clean.

It's all about personal choice. Some may clean more often, others almost never. unless it's over a prolonged amount of time i see no reason to clean unless it's loosing accuracy due to excessive fouling.

Thanks for that I spoke to my the supers office on Friday and was assured that I'd have my license this week. Only 4 months for a sub from .22 to .17hmr

ronn

My mod is made by this company. Www.ouluntyostokeskus.com
Anyone ever herd of them or used there mods,

garv123

ronn wrote: »

My mod is made by this company. Www.ouluntyostokeskus.com
Anyone ever herd of them or used there mods,

Looking around they make the SAK? is that the one you have? if so its probably the most common rimfire mod on the market because of its price and effectiveness.

ronn

garv123 wrote: »

Looking around they make the SAK? is that the one you have? if so its probably the most common rimfire mod on the market because of its price and effectiveness.

Yeah garv that's what I have, doesn't say sak on it only has the web address I posted earlier.

They've a you tube link to taking the mod apart, looks like it's a solid piece of metal, my last mod had loads of little rings inside it.

What do you do to clean yr mod, I was thinking a rub of a toothbrush and no oil.???

Feisar

Cass wrote: »

Interesting.

Would explain why there is so little difference between them, yet there is a difference.

Different lot numbers/production runs could be the reason for this. Sure same applies to the same brand though.

Cass

I know from reloading for F-Class that almost imperceivable differences in neck tension, seating depths, propellant lots, priming, etc. can cause shifts in point of impact and overall performance of the bullet.

For example while testing ammo i found that 5/1000th of an inch difference in seating a bullet can cause a bullet to spread from 2.375" out to 19". So if 0.127 mm of difference in seating depth can cause that when i'm taking painstaking care to make sure it doesn't happen what would it be like on a conveyor belt or in an automated assembly line? I know that's a large difference in reloading terms, but the point is valid.

I realise they have quality control, etc. but another item, and one i believe could be the cause, is the different lots of propellant used. Some of the top shooters in reloading test their load/batch of propellant every time they use a fresh tub. Even though it could be the same batch or lot number they don't take the "risk" that the propellant will act the exact same as the previous tub. Some of the really anal guys i've read about even allow for the fumes from the propellant. With some allowing the propellant to sit in the case for a time to allow these "fumes" to escape while others seat the bullet immediately to trap these fumes.

I never got into it in that extreme and frankly i don't know enough about that side of it to say if it was a wind up, serious/not serious, warranted etc. The point being just because some ammo may be manufactured in the same location does not guarantee the same performance.

German pointer

O yes she is accurate. I was out this evening to zero it just before dark and put up a target at 30 yards I had bore sighted (that hole is small) it at home and was only a few clicks off in the 1 o'clock direction so dialed it in and was grouping well. Fine tuned it and Didn't have time to get it to 100 so I said to myself I'll see how they group around the screw holding the cross piece of the target. Only got one shot as the first one blew away the screw and the target collapsed. And that's only after 25 rounds I wonder what she'll be like after 2 or 300 rounds down the barrel.

Can't wait to get this into the field for a few bunnies.

garv123

German pointer wrote: »

O yes she is accurate. I was out this evening to zero it just before dark and put up a target at 30 yards I had bore sighted (that hole is small) it at home and was only a few clicks off in the 1 o'clock direction so dialed it in and was grouping well. Fine tuned it and Didn't have time to get it to 100 so I said to myself I'll see how they group around the screw holding the cross piece of the target. Only got one shot as the first one blew away the screw and the target collapsed. And that's only after 25 rounds I wonder what she'll be like after 2 or 300 rounds down the barrel.

Can't wait to get this into the field for a few bunnies.

All of the hmr's are very accurate if the guy behind the gun does his part right (I dont:D) I was very suprised how my Marlin, which woudn't be expensive at all, was very accurate and could shoot half inch groups at 100 yards.

One day after zeroing I was seeing how it would group, a blue bottle landed on the paper and I decided to see how I'd to, I fired at him and didn't see anything, until I went up to the target and here's the result.



the hole is the one on the left, you can see the wing stuck to the page and guts around the hole aren't very visible.