Different 22 chambers

So what did you end up with?
I would guess EPS?

Going through this process myself except mine will be a modded 455. Most match chambers have the slight leade angles (1.5 - 2 deg) it really comes down to how much you engrave the bullet and the over all quality of the lapping job on the blank.

We just had a thread like this...

Voodoo use modified win52D I think. Think the new design is a "ravage" designation, which is based on a 52D. Again, best let them explain it better.

Calfee v2 is excellent.

orkan said:

We just had a thread like this...

https://www.snipershide.com/shooting/threads/22lr-reamer-choices-looking-for-advice.6997200/

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It was ok but there were still many questions not answered.

I am getting ready for buying a barrel too and while I have not yet asked which reamers they use, I want to soak all information possible to make educated choice and maybe ask them to get a certain reamer.

At the moment I am reading all of the 22lr reamer threads and have also studied and been comparing the document listing reamers.

Eoddave27 said:

I ended up getting the Eley EPS chamber. The rifle shoots great but it doesn’t seem to like non match ammo very much.

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I freaking knew!
Maybe my route too, around here even EPS is probably exotic.

Thanks, the non match ammo is always quite lot dependent so time will tell if something fits it.

For the uninitiated like me what are the design criteria for the various specifications? Only to match particular ammunition or that and more?

In depth discussions on chamber types can be located here:
Barrel Chambering

One item of importance is what ammunition you plan to use. If you want optimal accuracy, you need to match the chamber to your intended ammo. Yes, there are some compromises that can be had, but it is just that - a compromise.

With regards to PTG reamers, etc. I can say that I don't know any rimfire gunsmith still using their products due to quality and delivery issues.

If you are planning to use Lapua ammunition, definitely invest the time and read the information provided by Kevin Nevius.

Best Regards,
Ken

I have also been wondering about the taper/lead.

What do you think about it? Is it necessary? I would think the taper has a role when pairing the bullet to the lands but the short chamber already does that.

Ivanho:
"would say back in the day with manufacturing processes a long with ammunition making. the taper was added to help insure with extraction as well as following the center of the bore axis. Today with all the improvements we have made it's has no place in a chamber that is done correctly."

And what should I think about straight walls?
I have also thought about getting 52D and then finesanding the feeding end to make it easier, if need be.
As the barrel is QD I can alter it quite effortlessly.

Hopefully some PRS, had one match coming up. Mostly long range shooting for fun.

I do not see many instances where taking a round from the chamber is needed.
Worst case what could happen is before a pause I will need to either shoot it, switch the safety (in my private sessions) or remove bolt until shooting can be continued again.

I know the effort with bolt from shooting cheaper ammo through Anschutzes but there are different levels of those. What I do not wish for is effort that will ruin position / shooting rhytm. So mild engraving then maybe?
The LR Anschutz is quite much longer than 52D so I can imagine that it takes some force. I have only shot the Anschutzes slinged and it is very vulnerable position to have chambering problems. I shot 400 CCI SV one training weekend and it got quite rough/annyoing near the end.

My reasoning is that since I keep only my hand as the buttstock raiser I should be quite ready to support the chambering process through with it. But I have no experience of this.

Thanks for making me think.

Ability to take a round out of the chamber usually coincides with how tight the chamber is... which generally means things are pushed really far into the lands, or the area for the brass is also so tight that any sort of particulate will cause friction. I ran a Win52D chamber. It was a pain in the ass to chamber. Had to really put a lot of force to cycle a round and get the bolt closed. It had a wider brass taper area so I could extract live rounds, but where the lands started was very early, which made feeding really rough.

I ended up getting my chamber re-reamed to push where it hit the lands further. I believe win52d is like .580, and Eley EPS is like .60 or .61. That .02 made a huge difference.

I went to a match, which was just bench silhouette shooting, and a person had an anschutz, they kept wacking the bolt forward to get it cam down. Shot fantastic, but definitely wouldn't run that for a PRS match.

Eley EPS chambers well, but I've heard due to the tight brass area it can have issues with live extraction. 52D has a large opening, just starts the lands early. I'd go Eley EPS and open it up for easier feeding + easier extraction.

Don't forget the tighter the tolerances/chamber the more susceptible it will be to failures when it gets dirty. The Lilja original chamber, some folks reported that if they didn't clean every 100-150 rounds, it'd stop extracting spent casings. Might not matter if you're cleaning every outting for benchrest matches, but might be a pain in quality of life / PRS matches.

I would like 400-600 at minimum between cleanings. I have planned to just move to sticking a bore mop wet with Boretech Rimfire solution and then twisting and removing it after a while, and then bore snaking to clean it out.

Bottom line,
I think EPS sounds good for me too. I believe padom in that engraving is not necessary for pin point accuracy. But I also do think it does not seem to hurt it either.

Near miss said:

I would like 400-600 at minimum between cleanings. I have planned to just move to sticking a bore mop wet with Boretech Rimfire solution and then twisting and removing it after a while, and then bore snaking to clean it out.

Bottom line,
I think EPS sounds good for me too. I believe padom in that engraving is not necessary for pin point accuracy. But I also do think it does not seem to hurt it either.

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I think you can just ask Keystone to get you a barrel using Padom's reamer? That should work well.

littlepod said:

I think you can just ask Keystone to get you a barrel using Padom's reamer? That should work well.

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Very possible. As it is not a gun part I can get it here without paperwork and US export fees.

Near miss said:

Very possible. As it is not a gun part I can get it here without paperwork and US export fees.

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Erm, I first read about reamer. But getting a barrel here does quite doubles the price.
I wonder what is the going rate for their reamers instead? Going to ask them depending on what selection the smith has.

Near miss said:

Erm, I first read about reamer. But getting a barrel here does quite doubles the price.
I wonder what is the going rate for their reamers instead? Going to ask them depending on what selection the smith has.

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What country do you live in ? And what exact reamer spec are you after ?

iceng said:

What country do you live in ? And what exact reamer spec are you after ?

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Finland.

EPS will be absolutely fine but I am not sure yet what the smith will have available so looking for options here also.

My IBI barrel has the EPS chamber. CCI sv are a little tougher to close the bolt, accuracy with them is not great so I only use them when shooting indoors at 25 yards.
with SK and Eley chambering is no effort. There is the odd round that will not extract. When I was adjusting mag followers I ran these rounds through 4 mags and 99% of them extracted with no issues.
As far as chamber cleaning I don’t think it matters. I’ve had one stick about 50 rounds after cleaning. I’m betting a bit of a variance in bullet seating or brass diameter. Now I’m not sure what the difference would need to be, I’m betting not much.This is on a CZ 455 action if that matters.
Hopes this helps.

The smith has a PTG match reamer.

Should I roll with it it? It seems to be tight enough. He added that he can use whatever reamer I have in my hands.

Should I buy another reamer? Padoms reamer sounds very good.

The more I read the more I had questions.
It also seems that the person making the chamber is as important as the reamer.
And I guess it is better to use a reamer the smith is familiar with?

I enjoyed this thread by the way.

peopele do what ever they want with there property i hope you love what ever you are planning and it works out well for you I mine just a few months and love the cz mtr a lot its fun and the wood stock is pretty nice . I just could not see turning a 700 dollar 22 into a 1770 ish + the cost of the rifle + shipping that would be over 2.5 k + and you could get a full fledged voodoo for just a few dollars more . With only 500 rounds through mine it as it is , mine already shoots far nicer than I can shoot it but each to there own .

acudaowner said:

peopele do what ever they want with there property i hope you love what ever you are planning and it works out well for you I mine just a few months and love the cz mtr a lot its fun and the wood stock is pretty nice . I just could not see turning a 700 dollar 22 into a 1770 ish + the cost of the rifle + shipping that would be over 2.5 k + and you could get a full fledged voodoo for just a few dollars more . With only 500 rounds through mine it as it is , mine already shoots far nicer than I can shoot it but each to there own .

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I have lots of customization on this gun and I have it just the way I want it.
Ordering a vudoo to my country is something I am not crazy enough to do (lots import costs and papers) and also I rather much prefer to stick with one gun and see how good can I get it.

When looking at costs of a reamer against the ammo costs it looks like pocket change. It is fun to upgrade stuff and this is well beyond its planned time.

I guess PTG Match chamber bites into Lapua and SK bullet bands?