Rimfire Central Firearm Forum banner
  • Whether you're a greenhorn or a seasoned veteran, your collection's next piece is at Bass Pro Shops. Shop Now.

    Advertisement

Rumor Has It.......Lilja 26" CZ 457 Drop-in Barrel !?!?!?!

10K views 53 replies 23 participants last post by  fishingbenbiller  
#1 ·
Watched this a couple days ago...thought y'all might find it interesting.

 
#3 ·
Image

Image

Image

I’m glad to see lilja is doing these in 3 groove, I use to have them make me blanks so I could build CZ’s and Anschutz rifles using 3 groove barrels to my specs and machine to fit and chamber. I’ve done benchmark barrels this way as well but had the most consistent results with the lilja barrels (mostly lot testing rws R50). I’ve done testing with 2 groove barrels from lilja and benchmark but results during winter when it was cold were terrible. The 3 groove is the best compromise. On windy days or shooting at 100 yards, it’s incredible seeing the difference between a 3 and 6 groove barrel. The 3 groove barrels definitely do better! This rifle was a custom anschutz 64 I built about 6 years ago, it was a straight .900” lilja 3 groove at 25 or 26” long with a custom match chamber I designed. Not sure if the member who owns still posts here but the 100 yard groups on this rifle were insane!
 
#4 ·
I'm wondering if the combination of an extremely precise barrel with a CZ457 receiver system using the simple plug-in connection is a good prerequisite for consistent precision of shooting results at the level of the barrel.

When I insert the original 20-inch-barrel of my CZ457MTR vertically into the receiver - without tightening the 2 screws - the end of the barrel wobbles about 7 mm at the muzzle due to the manufacturing tolerances between the receiver bore and barrel tenon. With an 26-inch-barrel this muzzle wobble will increase. The two set-screws do not exert 360-degree symmetrical pressure on the barrel tenon.

I think DPG's concept of custom fitting a very high quality barrel into the CZ457 receiver creates better conditions for consistent, good results.
 
#5 ·
I think DPG's concept of custom fitting a very high quality barrel into the CZ457 receiver creates better conditions for consistent, good results.
The concept of squaring up a receiver and custom fitting an aftermarket barrel to an exacting press fit tolerance into a rifles receiver surely is not a new DPG concept but has been done by gunsmiths for decades across many brands and caliber firearms!

The actual drop in barrel concept is to a degree a tier lower as you are still getting the same barrel quality only you will be a little more at the mercy of where both your new barrel and receiver fall within the allowable production tolerances as to how tightly they may mate together.

I think right now if I were to pick having a custom fitted barrel done in a CZ457 I would probably lean towards Modacam.