as i checked it have some issues with thingbuilder and buggingout weapons that uses this thing, i came out with fix

<ThingDef ParentName="BaseBullet">
<defName>DMS_Bullet_CIWS</defName>
<label>APT shell</label>
<graphicData>
<texPath>Things/Projectile/Bullet_Big</texPath>
<graphicClass>Graphic_Single</graphicClass>
<drawSize>1.3</drawSize>
</graphicData>
<projectile>
<damageDef>Bullet</damageDef>
<damageAmountBase>28</damageAmountBase>
<armorPenetrationBase>0.40</armorPenetrationBase>
<stoppingPower>4</stoppingPower>
<speed>98</speed>
</projectile>
</ThingDef>

this code is working, i checked without mods and CE, also thanks for buitiful mod!