Reducing Insert Set for your Auto Trickler - $17 shipped. Over the past several months, I've had guys using my Chargemaster inserts, step up to the Auto trickler and ask me to work on an insert for it as well to help with that occasional overthrow. This is what I've come up with through some independent testing from guys right here and elsewhere. Ive made a couple of different sized inserts that will be sold as a set. The inserts are a taper fit into your Auto trickler discharge tube. Just twist them in and go. There is a large ID and slightly smaller ID insert in the set. Some guys report they like the smaller insert and some like the larger best. You might find one insert works better for your particular powder, that’s why you get them both. PM me if you want a set. Thanks.