i cannot believe the demand for brass inserts for aluminum arrows..
i was on phone with 3 rivers archery and they said they get 4 calls a day looking for them.

i guess no one makes them,if someone did in 50 gr/100gr,they would sell a bunch, i bet..

that matthis guy is selling tungsten ones from italy for aluminum arrows .

[align=left]I have used 2020's and 2018's inside of 2215's for years when making up takedown arrows. I use 4 inch sleeves and can make 2- or 3 piece takedown arrows. You can put 3 or 4 in a small pvc tube and carry in your backpack when in the mountains. They will also go in 2216's lights. They have a smaller wall thickness and, thus, a bigger inside diameter than regular 2216's.

I shoot only traditional so am interested in heavy arrows. Dr. Ashby's latest article in Traditional Bowhunter says that the strength of the arrow right behind the broadhead is often a culprit in poor penetration. I have made up some 2215's with 10 inch long maple dowels inserted. I taper the dowels for mounting the head. I also had to reduce the diameter of the dowel a little bit by putting it in a drill and holding it in a piece of sand paper. A little hot melt glue and it stays nicely in place. The maple 5/16 dowels weigh about 13 grains per inch so the FOC for me was about 19 with an arrow weight around 630 including the 190 grizzly broadhead for a 28 inch arrow. The effective spline is less than the spline tester says (72 lb) due to all the extra weight near the front of the arrow. I may need to try different dowel lengths or go to 2216's and sand the dowels some more since they are undersplined for my choice of elk bow. The advantage of the dowel is the strength of the maple on which the broad head is mounted.

Today a shoved a 2020 into a 2215 for a shaft of about 750 grains without broadhead. The spline was well over 100 lbs so I have a problem. I may need to put less than a full length 2020 inside to help me with the spline.

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I got my FOC over 20% by replacing the 40 gr aluminum inserts with 100 gr brass, in effect a 60 gr increase to the front. But I also replace the 5" vanes with 2" Blazers and use no wraps (I paint the back of the arrow with white lacquer instead). But these are carbon shafts. If I were shooting metal, think I'd go the cap screw way. Some add on weight systems require one to add weight through the back of the arrow; too much messing around (and cost) for reasonable application.