The right bolt for the TenPoint TRX 515
The correct bolt length, nock and minimum grain weight for the TenPoint TRX 515, and what stops a dry-fire.
Dry-fire warning
Bolt length, nock type and minimum grain weight are quoted from each manufacturer's published arrow data and owner documentation, cited on every page. A nock or grain-weight mismatch can cause a dry-fire that damages the bow and can injure the shooter. Confirm against your own owner's manual before shooting, and never drop below the stated minimum total grain weight.
| Bolt length | 20 in |
|---|---|
| Required nock | Alpha-Nock HPX |
| Factory arrow | CenterPunch HPX, 445 gr, 15.5% FOC, +/-.001 straightness |
| Rated speed | 515 fps (445 gr CenterPunch HPX) |
| Minimum total grain | 445 gr total with the shipped CenterPunch HPX |
TenPoint CenterPunch HPX 20 in carbon arrow with Alpha-Nock HPX
Search Amazon for TenPoint CenterPunch HPX 20 in carbon arrow with Alpha-Nock HPXaffiliate searchField notes
The TRX 515 is one of the fastest production crossbows and is matched to the 445-grain CenterPunch HPX with an Alpha-Nock HPX. At this speed the string-to-nock engagement is what keeps the bolt on the string, which is exactly what the Alpha-Nock's deep channel is for.
The faster the bow, the less forgiving it is of the wrong nock. A half-moon or flat nock here is a derailment risk. Keep the CenterPunch HPX and its Alpha-Nock HPX, and never go below the shipped grain weight.
Related crossbows and the nock
Sources: TenPoint - EVO-X CenterPunch 20 inch arrow spec (Lancaster Archery listing) · TenPoint - Alpha-Nock use required on TenPoint and Wicked Ridge crossbows · TenPoint - What nock should I use with my crossbow (FAQ)