Thearos wrote on Feb 18
th, 2013 at 2:45pm:
I looked at the Campbell article-- there is a bit about shape, but a lot is about whether sling bullets can penetrate flesh. But I'm pretty sure Rihll talks about spherical shapes.
I was doing a bit of excavating in the archives of this site, mostly to remind myself what I wrote before on the matter
![Grin Grin](https://slinging.org/forum/yabbfiles/Templates/Forum/yabb21/grin.gif)
.
I think the last time this came up was here
http://slinging.org/forum/YaBB.pl?num=1303975125/12#12I can't speak to anything Rihil might have written elsewhere than her book on the catapult, and of Campbell I can only recall the slightly acid review he gave to her book.
My recollection (summarised in the link above) is that Rihil makes claims about penetration on the basis of theoretical models of wound production and presumes for those purposes a spherical (ie. least pointy and therefore least penetrating possible) bullet. I believe she never quotes directly the formula which she apparently applies, but gets figures for penetration which she then says could not have been achieved by sling-thrown bullets. By assuming a sphere, rather than the elongated forms we know were used, she raises her calculated figures for penetration wounds to occur. From her point of view, to the point where only mechanical catapults could have achieved the necessary velocity.
The thread I linked to above reminded me that she quoted practical experiments with wounding velocities for a spherical bullet of weight 8.5gm, and then transfers those directly to the much heavier weights of typical sling bullets as if it makes no difference. This was one of the places where I felt my faith in her line of reasoning being stretched.
I thought that in much of the rest of her book she insists that the amygdaliform projectiles were employed in catapults, as we know they were in slings.
It seemed to me she wanted things both ways - which rather annoyed me.
Has she published anything making the same arguments in peer revue, not that I have a great amount of confidence in that method of judgement? I don't think I have much to add that wasn't gone over in the earlier threads on this.