Thread: Hdy 129g SST in 6.5x55 Swede

How much bullet (minus the boat tail) is in the neck? Can't be much?

Typically you want about 1 bullet diameter of contact (0.264) for neck tension and concentricity, in a mag fed load.

Those bullets shouldn't care about having a much larger jump. I'd try closer 3.000".

Originally Posted by Pommy

How much bullet (minus the boat tail) is in the neck? Can't be much?

Typically you want about 1 bullet diameter of contact (0.264) for neck tension and concentricity, in a mag fed load.

Those bullets shouldn't care about having a much larger jump. I'd try closer 3.000".

There is over 0.360 of the bullet in the neck, being a BT approx 0.230 is bearing surface which is still greater than bullet dia of 0.264.