460 barrel question

[damascusblade5]

 I am thinking about a 460 barrel. I know the S&W 460 gets a lot of it's velocity from the gain twist rifling in their barrel. Does the Encore barrel have gain twist rifling? If not how much velocity is lost?

[MePlat]

This is the first that I've about the velocity thing.  I thought the gain twist was to be easier on the bullet starting into the rifling.
Even if there was a velocity loss it should be very little and wouldn't the closed breech of the Encore barrel make up for it?
In my opinion it is "much to do about nothing" in the world of ballistics.

Why worry about it. 

[yooper77]

I have a 15" Encore 454 Casull barrel with rifling twist rate is 1 in 16", cut down to 12" by SSK and installed a T'SOB base with three rings.  I suggest finding a 454 Casull barrel, because its all you will need for any game anywhere.  I also use the Pachmayr grips with forend.

The factory Encore barrel in 460 S&W Mag is 15" pistol barrels are 1 in 16" and 20" Katahdin barrel is 1 in 18"

yooper77

http://www.gunsandammomag.com/ga_handguns/sw460_072905/

The engineering brain trust at Smith & Wesson also borrowed a 19th century feature to deal with the unique problems posed by the new load. The .460 features gain-twist rifling to ease the high-speed projectiles into their spin. It starts at 1-turn-in-100 and tightens to 1:20 at the end of the 7 1/2-inch tube.

[Grumulkin]

The Encore does not have gain twist rifling in the 460 S&W Mag.  The reason S&W used gain twist rifling was because without it, torque was breaking scopes.  It has nothing to do with velocity or with  being easier on bullets  On S&W revolvers in 460 S&W, the twist starts out at 1:100 and ends up at 1:20 at the muzzle.  The twist in an Encore 460 S&W is 1:16.  I broke 2 scopes with mine so I know it's hard on them.

Oh, and get a 460 S&W and not the 454 Casull.  I've shot both and the 460 isn't that much worse and it performs better.

[poncaguy]

Plus, you can shoot 45 Colt and 454 Casulls in the 460 Encore with very good accuracy, in mine anyway..........

[damascusblade5]

 Thanks, I have a S&W 460 but don't enjoy shooting it, not because of the recoil but because of the flame blast thru the barrel/cylinder gap. Thought the Encore may be more enjpyable to shoot.

[Redhawk1]

In the Encore the 460 Mag will have a lot more felt recoil than in the S&W 460 Mag. I have both also. There is no escaping of gases to aid in reducing the recoil in the Encore. The Gain twist actually helps with them light fast bullets. I don't think it is needed for heavier slower bullets. I only shot 300 and up gr. bullets in my 460 Mags.