If I use a heavy for twist bullet will it run slower than optimum through my barrel?
I've a .243 ten twist. Sako 100gr factory loads should have an approx. muzzle velocity of 905m/s. That's the claim on the box.
With a moderator on I clocked three of these for an average of 818 m/s. They were consistent at +/- 3m/s.
I know that 100gr in a ten twist is heavy and not optimal for stability and accuracy, but had not considered the impact on muzzle velocity.
Or is this all voodoo?