Dp you plan to run the cheap ammo just for comparison?

What do you consider cheap? 

I have some Eley Target that I will be testing.  It was around $80/500, so 0.16/rd.  If/when I can get some, I am planning on picking up some more .22 lr ammo in the $8-12/50 range. 

I still have some CCi mini-mags.  I bought that a long time ago.  I think around 0.08ish/rd.  Probably save those for my semi-auto pistols.  If I can get a hold of some cheaper ammo, say in the 0.10/rd range, I'm down to try.  For now, stuff like Eley Target, Lapua Center X, etc are easier to get.  They are more expensive, but I don't mind. 

I have a bunch of CCi Velocitor, but read directions to avoid that and Stingers for if/when I get a new barrel with match chamber.

ETA - I think the CCi Velocitors were in the $9/50 range when I bought maybe 4-6 months ago locally.  For that price, I'd rather wait for some SK .22 lr, as well as pay a little more for Eley Match or other brands that are in that range.   

What do you consider cheap? 

I have some Eley Target that I will be testing.  It was around $80/500, so 0.16/rd.  If/when I can get some, I am planning on picking up some more .22 lr ammo in the $8-12/50 range. 

I still have some CCi mini-mags.  I bought that a long time ago.  I think around 0.08ish/rd.  Probably save those for my semi-auto pistols.  If I can get a hold of some cheaper ammo, say in the 0.10/rd range, I'm down to try.  For now, stuff like Eley Target, Lapua Center X, etc are easier to get.  They are more expensive, but I don't mind. 

I have a bunch of CCi Velocitor, but read directions to avoid that and Stingers for if/when I get a new barrel with match chamber.

ETA - I think the CCi Velocitors were in the $9/50 range when I bought maybe 4-6 months ago locally.  For that price, I'd rather wait for some SK .22 lr, as well as pay a little more for Eley Match or other brands that are in that range.   

Like CCI stuff and standard velocity.  The RPRR also states to not use stingers.  When I used Blazer grey box, my grouping was like shotgun bird shot.

Today felt like Christmas.

I got my Benchmark barrel for my Anschutz 2013- 28" barrel, 3-groove, 0.905" diameter, 22 Nevius chamber specifically cut for Lapua, cone breech.
Took about 1 month to ship from Honolulu to Ohio, and back.


Also, Kelbly 34mm scope rings to fit the Anschutz 11mm dovetail base AND Accuracy 1st scope bubble.

Scope is backordered and will take 1-2 months .................

A 34mm scope tube is big, and the rings are big........ been used to 30mm scope tubes until now.
See how 4mm makes a big difference from 30mm > 34mm.

Shot all Eley Match today, but two different lots. Cleaned the barrel decently well after the last range day.

Shot 10 foulers before shooting groups to start (clean barrel) and between lots.



Lot #1 (first batch/shipment of Eley Match) plus left over from a previous range day.



Lot #2 (second batch of Eley Match)

Have another lot/batch to try. I was thinking about shooting some Eley Target, but decided to pass.

It was breezy at times and switching directions, but not bad.

Lot #1 had better groups. But also a few malfunctions or misfires. I think 3-4 in one box. Round would chamber, click. Bolt wouldn’t get bite on the case rim. Once I got the round out, had good strike on the case rim. I am guessing either dirty bolt/extractor or something else with the bolt. Second box of Eley and being more mindful of how I closed the bolt with more forward pressure and that stopped. I read that even the standard CZ chamber is tight and may need some time to wear in. But didn’t notice anything on the first 200 rounds, which included Eley Match.

Notes:
- Will have to try taller rings, which will allow me to move the scope slightly more forward. I’m using the rings for this scope from when I had it on a Rem 700. It work “ok”, but the mag dial clearance is super close if I mounted the scope more forward. The LOP adjustment on the stock is all the way out. I thought it worked ok when I set the scope at home and first couple range sessions, but noticed it wasn’t “natural” when shooting more groups.

- Need to add anti-cant/bubble level. The scope base has a bubble level, but I can’t really see it while my face is on the gun. I was lining up the reticle with the lines on the pasters. Want to ensure consistency.

- I shot a bunch of groups between breaks. More than before, especially when compared to shooting centerfire. In the later groups, I noticed some vertical stringing. I took more time to be consistent before breaking shots, including cheek weld.

Overall enjoying the .22 lr rifle. Will likely order a Lilja barrel with threaded muzzle for a tuner. But will see.

How many rounds before the vertical stringing happened?

Did you scope the barrel to see if you have a carbon ring after shooting?

Some ammo it forms quickly depending on the barrel.

Cheek weld makes a difference in vertical stringing.

1) How many rounds before the vertical stringing happened?

2) Did you scope the barrel to see if you have a carbon ring after shooting?

Some ammo it forms quickly depending on the barrel.

3) Cheek weld makes a difference in vertical stringing.

1) I shot the targets (1) first (50 rounds), then (2) next (50 rounds), and then (P) last (25 rounds).  So it occured here and there.  Best I remember, it happened in the later groups in a given relay.  I noticed the vertical spread increasing.  So after a break and being mindful of cheek weld, the groups improved.  That's what shows up in the (P) groups, which was last and some of the better series of groups.

2) No.  I have a Teslong borescope, but haven't used it for the CS 457. 

3) Yeah, what I suspected was the main cause of some groups opening up. 

3) Yeah, what I suspected was the main cause of some groups opening up.

22 rifles are like voodoo. The smallest thing u wouldn't  think about can affect it. Cheek weld, level rifle, mags, position of sandbag, etc...

22 rifles are like voodoo. The smallest thing u wouldn't  think about can affect it. Cheek weld, level rifle, mags, position of sandbag, etc...

I am aware of stuff like body position and pressures (including cheek weld) affect .22 lr.  The magnification of things with rimfire rifle is one of the main reasons I wanted this .22 lr rifle.  Prior to getting into precision centerfire, I mostly wanted a rimfire bolt action for plinking at the silhouette range. 

................ I mostly wanted a rimfire bolt action for plinking at the silhouette range.

Famous last words.... rimfire bolt action for plinking...................

You are far down the rabbit hole of BR 22LR ......  you getting close to where I am in the bottomless hole..............   

Famous last words.... rimfire bolt action for plinking...................

You are far down the rabbit hole of BR 22LR ......  you getting close to where I am in the bottomless hole..............   

That's still very much the plan for this rifle, as well as good rifle to take newer/newish shooters to the range. 

Yeah, I'm still fighting to stay near the top of the rabbit hole.  I am having a lot of fun shooting the CZ 457.  Big thanks to Kaleo for all that they do that is "feeding" this addiction interest.  I already ordered the tuner for the CZ 457.  I am probably going to order the Lilja barrel in the next week.  I am "trying" to stick with the OEM stock, but have been looking at some chassis.   

1) I shot the targets (1) first (50 rounds), then (2) next (50 rounds), and then (P) last (25 rounds).  So it occured here and there.  Best I remember, it happened in the later groups in a given relay.  I noticed the vertical spread increasing.  So after a break and being mindful of cheek weld, the groups improved.  That's what shows up in the (P) groups, which was last and some of the better series of groups.

2) No.  I have a Teslong borescope, but haven't used it for the CS 457. 

3) Yeah, what I suspected was the main cause of some groups opening up.

Scope the CZ before cleaning and let us know what you see?

Scope the CZ before cleaning and let us know what you see?

Too late.  Cleaned after I got home from that range day since I was planning on testing a different ammo batch.  I'll keep it in mind next time I do some ammo lot testing, likely with the Eley Match.  Depending on when I can get to the range again next, I might have the tuner installed, so will be different context. 

I'll likely be doing some plinking this weekend with the 22 rifle though.   

Did you scope it after cleaning? Is the carbon ring gone?

Did you scope it after cleaning? Is the carbon ring gone?

No, but I guess I can. 

Dunno about the 22, but for the new 308, I confirmed no carbon ring after cleaning.  Will see what I can see with the 22. 

No, but I guess I can. 

Dunno about the 22, but for the new 308, I confirmed no carbon ring after cleaning.  Will see what I can see with the 22.

Yah my center fire guns don’t have carbon rings but the 22lr the ring appears quick in my factory barrel.

So, what is the effect of this carbon ring and after what round count does it happen?

So, what is the effect of this carbon ring and after what round count does it happen?

I'm not the expert on this, but there are lots of forum posts and articles all over the 'Net on the subject.

The consensus (if there is one to be found) is this mainly applies to smaller caliber rifles, as the larger caliber ones have more power and are lee affected by carbon or powder build-up around the neck of the casing.

An established carbon ring manifests itself with sudden and progressive spikes in pressure; pressures b
ordering on the dangerous and in most cases degradation in accuracy will result. The tremendous amount
of heat and pressure transforms carbon fouling into a ceramic coating that is difficult to remove once it has
welded itself in your rifling.

Every experienced match shooter, barrel builder, or gunsmith has his or her way of cleaning rifles but most
will agree that a hard carbon ring can’t be removed by standard cleaning methods, it has to be scrubbed out.
There lies the fine line between effectively removing the carbon ring and damaging your bore by using a
compound too aggressive, overdoing the process, or a combination of both.

https://alphamunitions.com/carbon-ring-build-up-resulting-problems-and-a-cure/

In most rifles, the ring appears just in front of the neck of the casing, and just before the lands and grooves start in the  barrel.  I've seen some recommend cleaning that area after 100 rds in a day or 200 rds over 2 days of shooting for a .22LR.  That schedule is intended to avoid any impact on accuracy AND to prevent the ring from building up more than a little scrubbing can remove.  How long it takes to affect accuracy will depend on the caliber, ammo, barrel and frequency/thoroughness of routine cleaning.

The more it builds up, the more aggressively you have to clean the ring, which increases the risk of damaging the barrel.

So, what is the effect of this carbon ring and after what round count does it happen?

Here’s a video from Vudoo regarding cleaning & the carbon ring

That’s one reason why guys have good luck with factory 22lr rifles, carbon ring build up shortens headspace which may increase accuracy.

No carbon ring. At least doesn’t show up.

here is a carbon ring after 75 rounds