I found when using the crossbow that it shot very high. After watching Tods workshop youtube videos i wondered why it shot high, i worked it out that i was shooting 50 gram bolts and should be using 100 grams at least if not more. So after dusting the old girl off, i will make a set of new bolts but at 100gram or so.
Most probably make the shafts a bit wider at 1/2 or 3/4 inch and with in the bolt tray in length with bolt head and use wood flèches rather than feather and use the traditional two flèches. The bolt head diameter with in the size of shaft but 100 grams and a 4 angled nose end. Hopefully a can get the bolts on target than fly over the top.
Any other advice about why shooting high and how i can lower the bolt without aiming miles off.
As mentioned before anyone know the guy who used to make crossbows in UK in the 1980-90s for the re enactors market, he came from Maidenhead, nice bloke but cant remember his name before Tod workshop era.