Thread: Short barrel calibres?

I think what GUNDOC means is this.

your load data dose not change with a short or long barrel.
However a short barrel with a heavy(for calibre) bullet will loose a lot more performance than a light bullet with a faster powder.

The heavy bullet will still be accelerating all the way down the longer barrel so a short barrel here will give a big flash of burning powder and larger loss of velocity.
a Light bullet with a faster powder will accelerate quicker and will have a much more complete powder burn in the short barrel so less loss of velocity with barrel length.

Also a lighter faster bullet will shoot flatter and generally give better terminal performance. (at Shorter ranges)
Z