This is what I have in my Types.xml for these bolts. You have to craft the smoke bolts but the explosive bolts can be found in military zones and the chem bolts in contaminated zones.

</type>
<type name="Ammo_HuntingBoltSmoke_White">
<nominal>0</nominal>
<lifetime>14400</lifetime>
<restock>0</restock>
<min>0</min>
<quantmin>40</quantmin>
<quantmax>100</quantmax>
<cost>100</cost>
<flags count_in_cargo="0" count_in_hoarder="0" count_in_map="1" count_in_player="0" crafted="0" deloot="0"/>
<category name="weapons"/>
<usage name="Hunting"/>
</type>
<type name="Ammo_HuntingBoltSmoke_Red">
<nominal>0</nominal>
<lifetime>14400</lifetime>
<restock>0</restock>
<min>0</min>
<quantmin>40</quantmin>
<quantmax>100</quantmax>
<cost>100</cost>
<flags count_in_cargo="0" count_in_hoarder="0" count_in_map="1" count_in_player="0" crafted="0" deloot="0"/>
<category name="weapons"/>
<usage name="Hunting"/>
</type>
<type name="Ammo_HuntingBoltSmoke_Green">
<nominal>0</nominal>
<lifetime>14400</lifetime>
<restock>0</restock>
<min>0</min>
<quantmin>40</quantmin>
<quantmax>100</quantmax>
<cost>100</cost>
<flags count_in_cargo="0" count_in_hoarder="0" count_in_map="1" count_in_player="0" crafted="0" deloot="0"/>
<category name="weapons"/>
<usage name="Hunting"/>
</type>
<type name="Ammo_HuntingBoltSmoke_Black">
<nominal>0</nominal>
<lifetime>14400</lifetime>
<restock>0</restock>
<min>0</min>
<quantmin>40</quantmin>
<quantmax>100</quantmax>
<cost>100</cost>
<flags count_in_cargo="0" count_in_hoarder="0" count_in_map="1" count_in_player="0" crafted="0" deloot="0"/>
<category name="weapons"/>
<usage name="Hunting"/>
</type>
<type name="Ammo_HuntingBoltChem">
<nominal>10</nominal>
<lifetime>14400</lifetime>
<restock>0</restock>
<min>10</min>
<quantmin>40</quantmin>
<quantmax>100</quantmax>
<cost>100</cost>
<flags count_in_cargo="0" count_in_hoarder="0" count_in_map="1" count_in_player="0" crafted="0" deloot="0"/>
<category name="weapons"/>
<usage name="ContaminatedArea"/>
</type>
<type name="Ammo_HuntingBoltExplosive">
<nominal>10</nominal>
<lifetime>14400</lifetime>
<restock>0</restock>
<min>10</min>
<quantmin>40</quantmin>
<quantmax>100</quantmax>
<cost>100</cost>
<flags count_in_cargo="0" count_in_hoarder="0" count_in_map="1" count_in_player="0" crafted="0" deloot="0"/>
<category name="weapons"/>
<usage name="Military"/>
</type>