The right bolt for the Excalibur Assassin 400 TD
The correct bolt length, nock and minimum grain weight for the Excalibur Assassin 400 TD, and what stops a dry-fire.
Dry-fire warning
Crossbow bolt data and archery arrow spine, nock and thread data are quoted from each manufacturer's published figures, owner documentation and industry standards, cited on every page. A nock, spine 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 and the arrow maker's own chart before shooting, and never drop below the stated minimum total weight.
| Bolt length | 16.5 in |
|---|---|
| Required nock | flat (flat-back) nock |
| Factory arrow | Proflight, 252 gr shaft, 9.0 GPI,.346 in OD, 2 in offset vanes |
| Rated speed | 400 fps, 325 lb draw, 15 in power stroke |
| Minimum total grain | 350 gr total minimum (Excalibur caution) |
Excalibur Proflight 16.5 in carbon arrow with flat nock
Search Amazon for Excalibur Proflight 16.5 in carbon arrow with flat nockaffiliate searchFind Excalibur Proflight 16.5 in carbon arrow with flat nock on eBayaffiliateField notes
The Assassin 400 TD is a takedown Excalibur recurve at 400 fps that ships with 16.5-inch Pro-Flight arrows. Like the whole Micro-based line it uses a short flat-nocked arrow, not a 20-inch bolt.
A takedown Excalibur still takes the short 16.5-inch arrow, not a 20-inch one. On a recurve the rail centres the string on a flat nock, so do not swap to a captured or clip-on nock, and stay above 350 total grains.
Related crossbows and the nock
Sources: First look: Excalibur Assassin 400 TD, 400 fps, Pro-Flight 16.5 arrows (American Hunter) · Excalibur Proflight 16.5 carbon arrow, for all Micro crossbows (Al Flaherty's / Lancaster) · Excalibur - Arrows and nocks