20 or 16 inch barrel

[Baked Potatoe]

Yes what is speed count?
I shoot 22 from 300m and not sure where to put that variable into the ballistic calculator.
FYI: two barrels, one 16 inche heavy profile and the other one 20 inche heavy profile barrel
As long as they are good quality manufacturing they perform virtually the same.

Ammo has more affect than barrel length
use what you are comfortable with
Cheers

 

[Locked out]

Out of curiosity, why does speed count? At 300m what does an extra, say, 60 fps do that 1070 fps won't achieve?

Both rounds have a lot of "drop". The fastest top tier .22LR match ammo is RWS R100 at about 1130 fps and it drops about 173 inches (or 14.4 feet). An RWS R50 match ammo round at 1070 fps drops about 198 inches (or 16.5 feet). Scope adjustments can account for drop differences.

If it matters to the shooter, any other faster .22LR rounds won't be of similar quality and will be expected to have a much wider ES/SD

Personally it matters as with at least above standard velocity the lowest rungs of my internal scope ladder allows me to set it on the frying pan at 300m . Wind is also ridiculous and anything that get it there asap is a bonus . These are obviously extremes when it comes to RimFire but applicable in our experience
Ps apologies for thread derailment

 

[bearhunter]

Shepherd 22 Long Rifle Scope reticle

 

[Baked Potatoe]

Depending on the individual scope and canted mount, you can dial bull all the way out to 300m and farther no problem.
This seems to be getting away from the original question.
Get a 16 or 20 inch barrel. It won’t matter unless you have a unique use for it.
Comes down to a few feet per second slower in the shorter barrel. Accuracy is not effective in practical circumstances.
The choice of ammo is the biggest concern.