Building a "do-it-all" .22 lr and putting iron sights on.

scrumbag

Well-Known Member
Hi folks,

I'm building a bit of a Do it all .22 rimfire

Needs to do the following things.

1) Mimic some of my bigger rifles in terms of weight and feel
2) Shoot .22 lr at long range (200 and 300 yds) so needs a 20" barrel*
3) Be useable for running boar targets (so mount and swing cleanly)
4) Still work as a bunny gun
5) Have iron sights for practice

So, in meeting those criteria I decided to go with a CZ452 Varmint.

Having a 20" barrel and a bit of weight in the stock is a good combo for most of the above but it doesn't have any iron sights.

So, main issue, sighting.

Mounting a 3-12x50 Hawke with an adjustable objective was an easy choice for telescopic sight. It's got a good mag range and for target shooting at 300 the aiming mark is fairly large so no issues for targets and varmints.

Running boar there are a couple of options. Most competitions require you to use a scope of some form but also do hunting with a red dot sight on my 9.3x62 for hunting so a flexible option of mounting a red dot is needed. I also tend to take the .22lr to the shooting cinema for a warm up with.

The logical answer seemed to be a rail and I managed to find a CZ dovetail to weaver rail with 30 MOA of cant so that will help get to 300 yds. Also got helps with mounting a reflex red dot easily

Iron rights were more of an issue. My 9,3x62 has a cocking piece mounted peep sight. (See picture below)

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And I use the 9.3x62 in "historics" competitions as the rifle is a bit of classic with the red dot sight removed so a convenient way to practice would be welcome.

So, a rear peep on the .22 lr was required. I tried to use a Skinner rear peep but this trim little sight just sits too low for the stock shape combined with my face. (Varmint stock so built for use with a varmint scope). Ended up using my NEGC weaver peep sight on top of the rail. (Better position and doesn't need me to take the rail off so perhaps winning). This isn't quite the same as the cocking piece sight but it is still a peep sighted mounted at the back of the receiver.

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(A bit too low to get eye to with Varmint Stock)

Here’s the NEGC sight in situ.

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As you can see, sits rather higher and so fit’s better with stock.

Anyway, no front sight on the barrel. So, needed one of those. Liked the look of the Williams Shorty front ramp. Then realised it came in 4 heights, possibly for good reason. Now, here is a question. What front sight do I order? No idea how really to find out. I had asked Skinner sights what they suggested and Rob there suggested a good idea: Cable tie on the front of the barrel which you then clip to height as you shoot. When you clip have elevation you want, order the ramp and foresight combination that gives you the correct height. With some scepticism I headed to the range, cable tie foresight in place and tried it. You know, it actually works.

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(Yes, it’s a bit hokey and you wouldn’t want to have to rely on it but surprisingly it wasn’t wholly unuseable either)

So, ramp and foresight combo ordered, then it will be off to the gunsmith to get it fitting.

Williams Front Ramp

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More pictures to follow with more work done.

I appreciate this isn't truly a cub scout as I won't put a scout mounting option on it but for cheap scout scope practice I tend to use my scout scope mounted .44 mag lever action as with cast lead RNFP as not too expensive. (Also might be a bit heavy but not the worst thing in the world).

Anyway, if someone is going down the path of putting iron sights onto a rifle, I hope this helps.

Best wishes,

Scrummy

(*) To shoot out to 200yds and beyond you need to use sub sonic ammo as .22 lr bullets when shot subsonic don't tend to do well going transonic at ~125-150yds. Also you need about 60MOA of come-up from 50 to 300 yds so the mounts do have some cant).
 
I'm planning the same thing, I've brought CZ452 L/H acton with 12.5" barrel, which actually shoots quite well but I'm going change
the barrel to 24" / 26" and may change the stock.
 
Yes subsonic is the way to go, when shooting above 50 yards/meters

I'm keen to see how this project goes as I have been thinking of doing a similar thing with my CZ

I shot slow boar with open sights and found it only a few point lower than with a scope 93 with irons was my record.
 
I'm planning the same thing, I've brought CZ452 L/H acton with 12.5" barrel, which actually shoots quite well but I'm going change
the barrel to 24" / 26" and may change the stock.
Interesting. How easy is it to change the barrel on CZ452?
 
Yes subsonic is the way to go, when shooting above 50 yards/meters

I'm keen to see how this project goes as I have been thinking of doing a similar thing with my CZ

I shot slow boar with open sights and found it only a few point lower than with a scope 93 with irons was my record.
I have seen good accuracy with supersonic CCI at 100 yds but not sure I'd want to try it further.

When I get hold of the parts I shall get them to a 'smith for the work.

Scrummy
 
I've asked a couple friends who are RFD's to look out for barrel blank and as long as the barrel is not
chambered, I can get friend to thread it then just leaving the chambering to an RFD.
They all think I'm mad ie buy new one etc.
 
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I've asked a couple friends who are RFD's to look out for barrel blank and as long as the barrel is not
chambered, I can get friend to thread it then just leaving the chambering to an RFD.
They all think I'm mad ie buy new one etc.
I must admit I wondered about changing the barrel but just ended up buying one of the correct length.

Scrummy
 
I did something similar with a CZ rebarreled it a fitted it to a stock the same as my DG rifles so it felt very similar with the same sights. Great to practice with and charging rabbits made good quarry on a summers evening
 
I find when dialling out with my .22 subs are more accurate/consistent that supers - at 150 yards i can hit a coke can all day with subsonics - and ive pushed that to 200 yards on a very calm day. Supers (minimags) maybe hit half the time, stingers patterned like a shotgun.
 
Excellent post @scrumbag.

I was under the impression with 22lr the after a certain barrel length friction became a factor, reducing velocity.

If you were looking for a 300yd gun, was this a consideration?

Preparing to be educated

Eddie
 
Excellent post @scrumbag.

I was under the impression with 22lr the after a certain barrel length friction became a factor, reducing velocity.

If you were looking for a 300yd gun, was this a consideration?

Preparing to be educated

Eddie
Thanks @EDCM

If you have a look here: The Long Range Rim Fire Club there is an excellent section on long range .22lr ballistics and a 19 or 20" barrel is apparently what you need to get the best velocity out of .22lr subs.

Best wishes,

Scrummy
 
I get between 0.75" and 2" @ 100m from my 452 depending upon wind conditions and me

It seems to like Geco semi auto even out to 200m where it is probably going sub sonic towards the end of its trip down range

I've tried R50, R100 and Special Match with no great improvement over the ''cheap as chips'' semi auto

I'd like to put irons on the barrel - will be interested in your findings in that direction scrumbag

As for barrel length - I had a long chat (by email) with the lads at Vudoo Gun Works regarding barrel length (no my Vudoo has still not arrived yet !)

They recommended 20" or even 22" for long range - they seemed to believe that the 22" might lose a bit in velocity but tightened up the vel extreme spread which makes a fair bit of difference at longer ranges
 
I get between 0.75" and 2" @ 100m from my 452 depending upon wind conditions and me

It seems to like Geco semi auto even out to 200m where it is probably going sub sonic towards the end of its trip down range

I've tried R50, R100 and Special Match with no great improvement over the ''cheap as chips'' semi auto

I'd like to put irons on the barrel - will be interested in your findings in that direction scrumbag

As for barrel length - I had a long chat (by email) with the lads at Vudoo Gun Works regarding barrel length (no my Vudoo has still not arrived yet !)

They recommended 20" or even 22" for long range - they seemed to believe that the 22" might lose a bit in velocity but tightened up the vel extreme spread which makes a fair bit of difference at longer ranges
Drop me a line if I can help!
 
I have a 26 inch barrel on my Anschutz and after bore scoping, I noticed a build up of leading near the muzzle, I suspect its due to the bullet lube wearing off and leaving deposits near the last 3-4 inches of the barrel.

Apparently 16 inches is the bear minimum for longer range as after around 14 inches all the powder has burnt off.

Years ago I had a 10/22 with a 12 inch barrel that would leave unburnt powder in the can. Eley was the worst it sounded like someone had poured sand into the mod, SK pistol match was the least dirty

My CZ455 with 16 inch barrel can easily print sub 1 inch at 100 yards with SK std plus or Eley club. but then I did re crown it, myself, bed it and stiffen the stock with carbon tubes and rework the trigger.( I tend to do my own smithing due to very bad experiences with so called gunsmiths.

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Yes at only a tenner a year it seems like a good deal,

Long range rimfire has always appealed. But for some reason I always seem to miss the annual Bisley shoot in April

I too may consider joining, I'm already with 4 different clubs, having one more couldn't hurt though.
 
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