Len, this is the first post from a new member.
I found a reference to your PSE Tac 15 crossbow review in another forum and joined this forum because I also have a Tac 15. I had not been able to find much useful information/how-to, etc. regarding the Tac 15 until I read your review and the forum dicussion here.
I have shot a bow and arrow for many years (longbows to compounds) and found two subjects archers generally discussed were total arrow weight and FOC. The FOC percentage varied quite a bit with total arrow weight varying about 2 grains.
I have 15 PSE shafts, a dozen 100 grain field points and a dozen 100 grain broadheads and being from the old school I weighed and recorded each one. Fourteen of the shafts weigh between 343.0 and 346.0 grains; the fifteenth shaft weighs 338.7 grains. The 100 grain broadheads weigh 98.1 to 98.8 grains. The 100 grain field points weigh 100.2 to102.5 grains.
Note: I haven't had much success with mechanical broadheads so purchased one piece metal injection molded G5 Montec carbon steel broadheads. These broadheads are advertised to to 25% sharper, retain their edge longer and be easier to sharpen than their stainless steel broadheads. And they have been spin tested to +/- .002" straightness tolerance (for field point accuracy).
By juggling components I can get 5 shafts with field points within 1.7 grains and 5 shafts with broadheads within 1.6 grains. However, this is by using 10 different shafts. I have not measured arrow lengths and calculated FOC of any of the combinations or shot any arrows through a chronograph. Total weights of these 10 combinations varies from 442.2 to 444.9 grains.
My Questions are:
1. What is a reasonable total weight range to use for the Tac 15 arrows?
2. What is a reasonable FOC range for these arrows?
3. The arrows are supplied with inserts, 4 fletch fletchings and nocks installed. Will there be any alignment problems when using the three blade broadheads with the 4 fletch fletchings?
4. You mentioned paper tuning. How far from the bow did you place the paper?
I apologize for such a long post.