WOOT!!! I finally broke the 30 ball mark on my 12gram mag.
It got dark before I could mess with it more, but I got some data. I'll get more info soon and do a proper write up.

Best set of various configurations:
273
272
245
275
282
276
287
286
289
295
-
-
283
279
282
283
276
283
281
289
284
-
281
282
279
290
272
276
278
283
265
247
Dashes are no ball shots and I consider those usable shots. Probable uses even more air.