Greg - I'll take those measurements for you tonight. The Mace is basically all riser, and it's pretty stout, built to basically withstand repetitive dryfiring (3 gpp arrows).

The riser itself is 6061-T6 Billet Aluminum - which an aluminum alloy, with magnesium and silicon as the alloying elements. It has generally good mechanical properties and is heat treatable and weldable. Ithas the highest tensile and yield strength of any aluminum in the 6061 family (tensile strength of 42,000 psi (290 MPa) and yield strength of at least 35,000 psi (241 MPa)). Commonly used for aircraft parts/boats/bike/auto parts. http://en.wikipedia.org/wiki/6061_aluminum

I do know that Bowtech Ross and Rytera use the 6061 billetfor their risers. Hoytuses mostly 6061, but also uses somecast aluminum on certain models, which is more brittle.

Here's alist of pointsoutlining the different aluminum alloys to check out.
[ul][*]1000 series are essenitally pure aluminium with a minimum 99% aluminium content by weight and can be work hardened[*]2000 series are alloyed with copper, can be precipitation hardened to strengths comparable to steel. Formerly referred to as duralumin, they were once the most common aerospace alloys, but were susceptible to stress corrosion cracking and are increasingly replaced by 7000 series in new designs. [*]3000 series are alloyed with manganese, and can be work hardened [*]4000 series are alloyed with silicon. They are also known as silumin[*]5000 series are alloyed with magnesium, derive most of their strength from solution hardening, and can also be work hardened to strengths comparable to steel[*]6000 series are alloyed with magnesium and silicon, are easy to machine, and can be precipitation hardened, but not to the high strengths that 2000 and 7000 can reach. [*]7000 series are alloyed with zinc, and can be precipitation hardened to the highest strengths of any aluminium alloy. [*]8000 series are a miscellaneous category[/ul]
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So, after looking at this basic outline, it looks like a 7000 series aluminum-zinc alloy is the head of the class, but for some reason (probably cost or machinability) nobody uses it. The 2000 series is harder, but develops stress cracks, which is no good for a bow riser. Knock out those two, and that leaves the 6000 series as your best available aluminum material to build a bow...and the 6061-T6 is the highest grade 6000 series available.

With the limbs they're putting on this thing, and the quality of the riser/string, there's no reason you should ever have any trouble with it. By the way, when I bought my last bow, I came really close to buying the Max Force - the shop owner just gave me a better deal on the jennings.

It takes 10 minutes to learn to shoot a bow, and you could never learn everything about archery in2 lifetimes. Crazy...

Froman - 2 of my uncles hunt with 4runners - one carbon and one aluminum. Great hunting bows.