Air Gun Home :: View topic - Crowning- What about?

Mar · Veteran Member

I know the importance of a proper crowning job on a barrel but since buying new guns lately, they all have, it seems a slip on front sight.

Does this not affect accuracy since it's all plastic up front, hiding the barrel crown?

AirGunEric · Site Admin

The slip on (and over the crown) front sights should be larger in diameter than the pellet- so the pellet is still having its last physical contact with the barrel, or any other part of the gun, at the crown. The crown is not a gas flow control- it's a pellet control to ensure good twist is not interfered with and straight exit from the muzzle. If the front sight were to physically interfere with the pellet travel/path- then the barrel crown itself would be pretty much irrelevant.

Mar · Veteran Member

Yeah but that being said...with gun powder firearms though, there's muzzle blast, not sure about air guns though if it's the same.

Has there been any test to see if there ever was a difference on accuracy with and without that piece. I see people adding muzzle brakes to their guns so I guess it still doesn't change things...or dose it?

AirGunEric · Site Admin

Airguns do have muzzle blast- obviously the less powerful the gun, the less the blast. That being said- the crown is not a gas re-direction device- it is just the physical exit point for the pellet.

Some info on brakes and silencers, and blast and so on:

http://www.airgunhome.com/pages/silencers.html

Some people believe brakes do help accuracy- but I don't think that it has ever been properly proven, although these things: http://www.airgunhome.com/agforum/viewtopic.php?t=385 -the air "stripper" are apparently useful for accuracy improvements- but they are really not a brake.

Mar · Veteran Member

Just when I figured I read every post here, you pull out a new one on me...Thanks man, will read it later though.