hydehunter
Well-Known Member
having the barrel on my .06 shortened so now I wonder if there is one barrel crown better for using a suppressor I have always had an 11degree crown done but wonder if there is a better crown to go with
My understanding is the bullet never touches the crown only the end of the barrel inside. The crown controls the initial departure of the bullet leaving the pressurized barrel and beginning the free flight. Even concentric contour of the crown aids in controlling the final pressure of gasses upon the bullet base to ensure perfect sendoff. Sort of like the finger tips being the final control of a basketball shot. Damaged, imperfect crown results in imperfect final pressure on bullet base and can result in pressure imbalance turbulence on bullet base.....fingers not aligned toward rim, off center on the basketball.An 11 degree crown with a 60 degree centering recess is optimal, or an 11 degree alone will work just fine.
The biggest thing in my opinion, is that whoever does the work needs to polish the muzzle to 800 or 1000 grit and final it with some type of polish like Flitz.
This helps to dissuade the carbon and makes for easier cleaning of the muzzle when using a brake or suppressor.
Remember- the crown is the last thing a bullet touches as it leaves the barrel, so it needs to be sharp! No dings or galling.
It is VERY surprising how important this is.
That's what i was trying to relay.My understanding is the bullet never touches the crown only the end of the barrel inside. The crown controls the initial departure of the bullet leaving the pressurized barrel and beginning the free flight. Even concentric contour of the crown aids in controlling the final pressure of gasses upon the bullet base to ensure perfect sendoff. Sort of like the finger tips being the final control of a basketball shot. Damaged, imperfect crown results in imperfect final pressure on bullet base and can result in pressure imbalance turbulence on bullet base.....fingers off center on the basketball.