Stan, got the glue-on's to 300gr. I used a short 75 gr steel adapter (they are hollow), filled with solder to flush, Talon filled with remainder of solder. Just barely fits, but it does. The long 125 and 100gr adapters wouldn't allow enough solder to make weight. JB welded them together this morning before work and will hopefully get to knock one off a couple of stumps right before dark when I get home. I really like ability to sharpen the flats...makes a wicked little mini broadhead when ran across a flat stone a few times
For those who have never used solder to help make a heavier head, it works pretty good if you get the lead/low temp stuff you can still find in electronic stores. Put your adapter and head on a scale together, add hunks of solder to the scale until you reach the desired weight, go to melting and see if it will all fit together. Careful not to overheat the head or you'll have to work to re-temper, hence the low temp solder. using the various aluminum and steel inserts, both hollow and solid, really gives you a lot more options for getting the exact weight you want.