[naloth]

I'm not sure how readable this will be, but using normal ST progression (and presuming you'd reach the higher numbers by means outlined in Supers), here's a weight/damage chart:

ST, BL (ST*ST/5), 1/8 BL (Thr-2), 1/4 BL (Thr-1), 1/2 BL (Thr), BL (Thr+1), BLx2 (Thr), BLx4 (Thr-1), BLx8 (Thr-1/2), where the modifier is per die rather than a flat bonus if you're using normal ST rules.

ST BL Thr-2 Thr-1 Thr Thr+1 Thr Thr-1/2 Thr-1
10 20 2.5 5 10 20 40 80 160
12 28.8 3.6 7.2 14.4 28.8 57.6 115.2 230.4
15 45 5.625 11.25 22.5 45 90 180 360
20 80 10 20 40 80 160 320 640
30 180 22.5 45 90 180 360 720 1440
50 500 62.5 125 250 500 1000 2000 4000
100 2000 250 500 1000 2000 4000 8000 16000
120 2880 360 720 1440 2880 5760 11520 23040
220 9680 1210 2420 4840 9680 19360 38720 77440
320 20480 2560 5120 10240 20480 40960 81920 163840

This might actually be more useful. Here's the distance you can throw based on ST for a lightest (under 1/20 BL) and the heaviest (BLx8) item you can throw without using extra effort:
ST min max
10 35 0.8
12 42 0.96
15 52.5 1.2
20 70 1.6
30 105 2.4
50 175 4
100 350 8
120 420 9.6
220 770 17.6
320 1120 25.6

As an interesting note, the military expects most (presumably ST10) recruits to be able to throw a grenade (1lb) about 25 yards. Those same recruits should be able to lob a baseball (under 1/3 lb) over 50 yards.