Range Report Muzzle Velocity Question

[RichardCranium]

Hey everyone,
Not sure if this is the right place for this question but I do not have a chronograph and I am curious what muzzle velocity I should expect out of a .308 federal premium match king 168gr out of a 20" barrel? I know the back of the box and online info is probably out of a 24"-27" barrel.

Thanks in advance.

 

[Steel head]

My buddy got 2650 out of a 22” barrel with that ammo.
2600 shoulder be a reasonable start.

 

[BCMulx]

Not exactly the same load, but I was getting 2600 out of a Nosler Accubond 165 - 18" barrel.

 

[MisterAnderson]

Hey everyone,
Not sure if this is the right place for this question but I do not have a chronograph and I am curious what muzzle velocity I should expect out of a .308 federal premium match king 168gr out of a 20" barrel? I know the back of the box and online info is probably out of a 24"-27" barrel.

20" GAP-10 gets me 2605 fps from FGMM 168 SMK.

 

[Lionsbreath]

My 20” .308 was getting 2580 with the 175 FGGM’s

 

[tnichols]

Typically they use a 24” to get their numbers. I’d throw 2650 into the calc and work from there. I always start with a higher than expected MV. If it prints/impacts low on the target or in the berm, you have data. Over the top, you sometimes get “no impact no idea” unless you or your spotter is picking up good trace.

 

[bfoosh006]

This might help...

https://rifleshooter.com/2014/12/30...ato-barrel-length-versus-velocity-28-to-16-5/