No, it just means that back in the day, most of the ammo available looked like this.
It must kinda went through, pushing its way, without really causing a whole lot of damage.
Instead of, like now, with the huge honkin' hollow points, and Glassers, and things of that nature, that upset and tear up big chunks of meat.

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Meddle not in the affairs of dragons, for thou art crunchy, and taste good with catsup - George of Lod, Year of Our Lord 297
I always take precautions.
Beware the Evil Bullet Fairies.