When you consider what type of charger head to get, consider the Irish. It is adjustable for 1, 1-1/4 and 1-1/2 oz of shot. It can be fine tuned by putting cards or other filler in the bottom of the scoop, so you could reduce it to say 3/4 or 1/2 or in between. Can't do that with the English. It dumps one of two volumes, period. But the Irish has a scoop you can lose if you don't put a leash on it. That's why ToW sells replacement scoops. Experience talking. Mine's now tethered, and a spare is at home--guaranteeing that I'll never lose another.