CZ 457 re-barrel options include chamber type, (bentz, match, nevius)

[GuideDog]

I'm seeking recommendations on a barrel for a CZ 457. I currently have a match chambered 457 Manners stock and it groups .5 in. I'm seeking tighter groups of .3 in. I have tried most everything to get the factory barrel to group better. Firing pin, trigger, torque, floating, ammo, etc,

What aftermarket barrel have you tried to get .3 inch accuracy with what chamber (bentz, match, nevius)?

Just for info I'm already shooting .3 inch groups or better with my Vudoo and Bergara with Lapua Center X ammo. So it's NOT the shooter.

I'm wondering about the nevius chamber since it seems similar to what vudoo uses but please offer all suggestions. it would be great if there's someone who has a nevius chambered barrel.

 

[Mulepackhunter]

We have tested Match, Bentz, and Nevi and to be honest not much difference with the little testing we have done. The barrel we have seen some larger difference for sure. I havnt dealt with many brands but so far the Krieger was the best groups yet. Always depending on ammo of course, that is the big factor. Which ammo and can you get it. Have not messed with twist rates much, just got into the 22lr.
My personal NRL gun is a Brux barrel 1:16, My buddy has a Hart barrel that shoots great at 1:15. My next project gun for my wife and for testing and sale will be built with a Shilen Ratchet rifled barrel and I think im going to just do the Match chamber, just need to decide on the action and twist rate.
I do hear alot of guys liking the Lilja and Criterion barrels in 22lr.

 

[David Lott]

Precision and accuracy are more than just parts, the process plays a bigger role. That said, I use a Nevious reamer but in a different way than a reamer in conventionally used.

 

[Mulepackhunter]

Precision and accuracy are more than just parts, the process plays a bigger role. That said, I use a Nevious reamer but in a different way than a reamer in conventionally used.

Not to hijack the thread but do you see results change on depth of reamer? depending on what the barrel is for I usually try to ream for the ammo i want to shoot, going along with not reaming as it was intended.

 

[David Lott]

Not to hijack the thread but do you see results change on depth of reamer? depending on what the barrel is for I usually try to ream for the ammo i want to shoot, going along with not reaming as it was intended.

I have tried from .150 down to - .020 in .010 increments, the lesser the depth of engraving accuracy improved. Did not see any positives past .025. Keep in mind, I was looking for a specific outcome in my test not necessarily the best accuracy. Best advice is try it and see what works best for you and your process. Absolutely make sure the ammo you use for the test is of a KNOWN good lot otherwise you will chase your tail.

 

[masterofpew]

Purchased a Lilja 1" straight taper for my 457 Manners. I needed the extra weight out front cause even with a weighted ARCA rail it was still heavy in the backside.

Sold my 16.5" MTR on eBay to recoup some cost of the Lilja.

 

[DrA1]

I shot 52D in a mullerworks by crossroads precision (Bergara) , Nevius (by DI precision) in a muller works in a Vudoo and L3i with Wasp (in a 457).

All 3 of those shoot consistent 0.3 groups at 50 yds — and not cherry picked groups — for example if I shot 20 groups or 5, then 17 or 18 would be 0.3s or better. This requires quality ammo that is well tested and proven.

The 52d is the tightest chamber and the nevius and wasp feel similar.

 

[Jeff Kalina]

I read something recently that claimed at 50 yards a 1 in 13 twist with the tightest bore would be the best way
to achieve tight groups.

 

[TonyAngel]

My advise would be to stop dumping money into your 457. Take your stock and all of the doodad add ons off your barreled action and sell your barreled action. If you're committed to the 457, get with someone like Desert Precision where you'll get either a threaded or thermal fitted barrel with the proper headspace and drop that into your stock. You'll wind up with something better than you could have pieced together.

I went the pieced together route. My stock is nothing special. I heavily modified the wood stock that my 457 came in. Added a Lilja barrel, headspaced to .039, timney trigger and it shoots very well. Very consistent .2 and .3 at 50 with the level of consistency being largely dependent on the ammo.

For all of the time, money and hair lost, I could have spent a bit more and gotten something worth more than the sum of its parts.

If you just want to keep your action, I understand that Craddock will do work on your action. There's nothing like a custom spun barrel.