CZ457 LRP

[No i deer]

Went out zeroed tested the lot of eley match and center X..

I really liked the rifle 😊

It was too windy upon the batch but had a play anyway..

The eley match were cracking nearly every shot 😳.

Not sure why that's happening 

My CZ452 varmint is the same length barrel and very rarely got a cracker..

Groups wernt nothing to write home about..

5 shot groups at 50yds.

Hopefully it will be less windy tomorrow as I have some R50, SK long-range and some 42gr winnie subs..

left group eley match..

2 right groups center X

No crackers with the center x.

I think the fliers were me

[Scotch_egg]

If that is a SAK silencer I can recommend changing it. I had one on a custom 10/22 and as soon as I swapped out to an old Sako silencer my groups shrank considerably. 

[No i deer]

It's brand new but I do have a different silencer..

The wind would of played a big factor in the groups

That was likely down to barrel harmonics and the different silencers weight changed the tune.

I'll try it with the factory muzzle brake/compensator on.

I watched alot of the pursuit of accuracy about the 22lr's and the custom barrels can be ammo fussy aswell.

I might play with the torque settings on the action screws aswell..

As I took the action out to adjust the trigger I torque the screws to 20 inch lbs.

Ideally I'd like it shooting cloverleaf at worst..

I'd likely get better results shooting from a bench rather than prone on uneven ground.

[Scotch_egg]

Quite interesting what you are saying about the different things that can affect accuracy. I’ve not looked into it all. My sak was older. It shot okay but as soon as I changed it out the groups shrank. Nice rifle though. I wish I had gone the bolt action route. Although my dad has got an original Sako 94 varmint I might pilfer at some point. 

[No i deer]

Kidd make a cracking semi-auto that can pretty much match the accuracy of the big bucks bolt actions..

The kidd rifle is big bucks too..

Check out pursuit of accuracy on YouTube.

I like a EC tune brake on my LRP if my rifle was just for range use do I could tune the ammo to my rifle if it wasn't shoot how I want..

As its a hunting rifle I'm inclined to use a silencer..

My CZ452 varmint was shooting the center x better than the LRP did..

The LRP shot the eley match better though..

It's a shame I was getting all them crackers..

I'll chrony some tomorrow and see how fast there going..

I find it odd that my CZ452 wasn't getting crackers with the eley match and the LRP does with the same length barrel 🤔.

The twist rate maybe different 

[No i deer]

Both rifles have a 1 in 16 twist rate 

[stephentri]

If you want to use a barrel tuner with your moderator get the ATS barrel tuner I use it on mine with a SAK moderator,

[No i deer]

Have you got a photo..

CZ muzzle thread is 1/2 20 unf I think.

[stephentri]

https://www.kineticsecuritysolutions.com/products/adaptive-tuning-system-ats?variant=32154840039539

[No i deer]

I've done a bit more testing..

Still a little breezy but not too bad..

I've stopped now as the wind has got right up..

Centre x is the most consistent and only had 1 cracker.

R50 shot a nice group but loud

Rws long-range OK but loud..

Eley match not good and the loudest..

42gr winnie subs were terrible..

There not going strait through the target..

Defo unstable..

Disappointed on the whole..

I hoped the LRP was gonna be better than my CZ452 varmint and its not..

Not yet anyway...!!

So far I'd say the CZ452 varmint would better than the LRP though I am enjoying shooting a new rifle..

It looks like the LRP is going to be very fussy 

[No i deer]

R50

all groups 5 shots at 50yds

 

[No i deer]

Center x left

[No i deer]

42gr winnie subs

[No i deer]

Centre x top

rws long-range bottom

[No i deer]

left R50

middle centre x

right eley match

[20series]

.22 ammo can have massive variations batch to batch.  Back in the day when I was seriously into smallbore I went batch testing at Eley.. the difference was staggering. 

I never really found a batch that worked well in my Anschutz 2013, usually went for RWS R50 which at the time was far more cost effective and personally I found it to be more consistent between batches.  That said the costs these days are eye watering.

Playing with bedding bolt torques can have a big effect as well so gibe thst a bash as you mentioned.

Alan 

[No i deer]

The accuracy wasn't too bad.

I'm led down on fairly uneven ground,leaves twigs etc not on a bench..

All bar the Centre X were crackers..

I want subsonic which I thought they were all ment to be..

Not sure about RWS long-range..

I've not got a scope on my CZ452 varmint now as it's on the LRP otherwise I'd of done a comparison.

The R50 were about £15 a box..

It would be fine if they were subsonic..

I will try torquing the action screws at different settings..

My CZ452 is on 18 inch lb's..

LRP is on 20 

[Popsbengo]

Here's some groups from my Bergara B14 rimmy shot outdoors in a very light wind

10 rounds per group at 100yds.  CenterX is a touch better but at the price I'll stick to RWS Rifle Match.  Tried Eley Match which was best at 50yds but less good at 100yds.

[jcampbellsmith]

One thing to be wary of is how many rounds it takes to run a new brand of ammo in. I shot the following target at 108 yds. The first twenty shots were nothing special, but the third is not bad at all. If I'd only fired 2 x 10 shot groups, I would have been none the wiser. 

Number    Ammunition    Overall MOA    Velocity    SD
Group 1    Eley Ultra ELR    1.831    1074.8    10.9
Group 2    Eley Ultra ELR    1.655    1073.8    10.6
Group 3     Eley Ultra ELR    0.838    1080.2    10.8
Regards

JCS

[Popsbengo]

24 minutes ago, jcampbellsmith said:

One thing to be wary of is how many rounds it takes to run a new brand of ammo in. I shot the following target at 108 yds. The first twenty shots were nothing special, but the third is not bad at all. If I'd only fired 2 x 10 shot groups, I would have been none the wiser. 

Number    Ammunition    Overall MOA    Velocity    SD
Group 1    Eley Ultra ELR    1.831    1074.8    10.9
Group 2    Eley Ultra ELR    1.655    1073.8    10.6
Group 3     Eley Ultra ELR    0.838    1080.2    10.8
Regards

JCS

Yep, I shoot 20 rounds before testing grouping when changing ammo.

As the rifle was second hand I have no idea what was shot through it.  For an experiment I'm going to scrub by barrel completely clean and polished, and then see if sticking to RWS Rifle Match will ultimately improve group size after running the barrel back into condition.  Or not.  We shall see.

[No i deer]

As far as I know.

Eley match.

R50

Rws long-range 

Centre x has the same lube..

Bees wax.

Not sure about 42gr winnie subs.

I've watch alot of pursuit of accuracy videos and josh doesn't bother fouling inbtween ammo if the lubes the same..

Pops/ JCS Are you getting crackers on the same make ammo mentioned above.

I see John has a custom barrel not a standard MTR barrel the same that's on the LRP.

I'm more frustrated about the crackers than the groupings/gatherings 🤣

 

[Popsbengo]

4 minutes ago, No i deer said:

As far as I know.

Eley match.

R50

Rws long-range 

Centre x has the same lube..

Bees wax.

Not sure about 42gr winnie subs.

I've watch alot of pursuit of accuracy videos and josh doesn't bother fouling inbtween ammo if the lubes the same..

Pops/ JCS Are you getting crackers on the same make ammo mentioned above.

I see John has a custom barrel not a standard MTR barrel the same that's on the LRP.

I'm more frustrated about the crackers than the groupings/gatherings 🤣

 

No crackers that I can tell, but I don't use a mod.

[No i deer]

The crackers i've been having is with a sak mod on.

I can live with centre x if the slower and quiet..

Defo can't use 42gr winnie subs as they're not stable 🤣.

I'm not 100 percent sure that my CZ452 wouldn't of had crackers with this lot of R50 or rws long-range.

I have tried R50 before in the 452 and didn't get crackers.

I was switching between ammo and the centre X shot decent every time which sort of proves i was shooting ok and it was the ammo not me..

I've agreed to buy some tenex of somebody but i may have the same issue..

crackers..

ill have to find out what speeds are on the boxes..

 

The R50 state 327mps which is slower than the eley match I think is 1069fps.

I'm not 100 percent on the eleys velocity.

[No i deer]

I did some side by side testing over the Garmin chrony with my CZ452 varmint and the CZ457 LRP.

I used 4 brands of ammo

Eley match

R50

Rws longrange 

Centre x.

All 4 brands shot 50fps faster through the LRP..

The slowest shot out of the top 3 in the LRP was 1099fps..

All the top 3 averaged over 1100fps so there supersonic..

The centre X fastest shot was 1080fps in the LRP. 

In the 452 it was 1030fps..

One or two were less than 1000fps..

I didn't get to accuracy test side by side as the 452 hasn't got a scope on..

The group is centre x 5 shots at 50yds with the LRP which I can live with if the next lot of centre x will shoot subsonic..

If anybody else uses centre x in their LRP can you tell me what velocities you were seeing..

 

[No i deer]

Here's the stats.

Left side CZ457 LRP 

Right side CZ452 varmint. 

SD's and ES's are much less with the LRP than the 452.

The velocities are way more with the LRP