CZ 455 standard barrel vs CZ 455 bull barrel (varmint)?

[tjhaile]

The 22LR cartridge does not generate enough heat to be of any concern . So , why flute the barrel ? Mainly cosmetics . A side benefit might be slightly reduced barrel weight . Fluting exposes more surface area so potentially aids cooling , but , this is a non issue . Fluting does not add any increased stiffness . On a 22LR , it's just cosmetics . A heavy barrel does add considerable stiffness compared to a light taper barrel though . This stiffness offers very different barrel harmonics . Potentially , this can be very beneficial to accuracy . Harmonics are a very sensitive thing and even with a heavy barrel can be tuned . A simple rubber X Ring deresonator on a heavy barrel can completely ruin accuracy if placed in the wrong spot on the barrel .

A fluted barrel of equal weight will be more rigid than a non-fluted one. A fluted barrel of the same diameter will be less rigid than a non-fluted one. See here for a detailed explanation:
http://www.snipercountry.com/articles/realbenefitsbarrelfluting.asp

That said, it would be difficult for an individual to prove that there is a measurable difference in accuracy between the two barrel contours beyond rife-to-rifle variation.

 

[grauhanen]

A fluted barrel of equal weight will be more rigid than a non-fluted one. A fluted barrel of the same diameter will be less rigid than a fluted one.

To be clear, a fluted barrel of the same diameter will be less rigid than a non-fluted one.

 

[tjhaile]

To be clear, a fluted barrel of the same diameter will be less rigid than a non-fluted one.

Correct.

 

[cdncowboy]

The varmint is a tack driver ... even using my match grade dynapoints