Thread: Trailboss 308 150gr load.

Little dog

To work up "Your Own" load for your .308 using Trail boss follow this formula as recommended by the manufacturer.

Find the base of your chosen projectile when it's loaded to the correct depth in the cartridge case and mark a line on your case at this depth.

Remove the projectile from the case.

Fill the case to this mark with Trail Boss powder.

Pour this powder into you scales and weight it.

This is your maximum load.

To work out your minimum load multiply your maximum load by 0.7, or 70% of your maximum load.
This is your minimum load.

Start with the minimum load and using a chronograph work your way up until your projectile has a Muzzle Velocity (MV) of 1050fps (Feet per Second).

You now have a subsonic load for "Your Rifle and Projectile choice".

Be careful when starting at the minimum load that you make sure the projectile has actually left the barrel after each shot.

Jobs done

Cheers
Pete