diff --git a/src/game/chr/chr.c b/src/game/chr/chr.c
index 0dbee9a42..592eda237 100644
--- a/src/game/chr/chr.c
+++ b/src/game/chr/chr.c
@@ -4551,11 +4551,11 @@ bool propchrDoFireslotThing(struct prop *prop)
 	struct chrdata *chr = prop->chr;
 
 	if (chr->fireslot[0] >= 0) {
-		func0f0adbbc(&g_Fireslots[chr->fireslot[0]].unk04);
+		bullettailTick(&g_Fireslots[chr->fireslot[0]].bullettail);
 	}
 
 	if (chr->fireslot[1] >= 0) {
-		func0f0adbbc(&g_Fireslots[chr->fireslot[1]].unk04);
+		bullettailTick(&g_Fireslots[chr->fireslot[1]].bullettail);
 	}
 
 	if (chr->aibot && chr->aibot->unk058 > 0) {
diff --git a/src/game/chr/chraction.c b/src/game/chr/chraction.c
index c924fe722..37498dd50 100644
--- a/src/game/chr/chraction.c
+++ b/src/game/chr/chraction.c
@@ -17815,10 +17815,10 @@ glabel func0f041a74
 /*  f041b78:	a058003f */ 	sb	$t8,0x3f($v0)
 .L0f041b7c:
 /*  f041b7c:	8e190348 */ 	lw	$t9,0x348($s0)
-/*  f041b80:	0fc2b6ef */ 	jal	func0f0adbbc
+/*  f041b80:	0fc2b6ef */ 	jal	bullettailTick
 /*  f041b84:	8f240004 */ 	lw	$a0,0x4($t9)
 /*  f041b88:	8e08034c */ 	lw	$t0,0x34c($s0)
-/*  f041b8c:	0fc2b6ef */ 	jal	func0f0adbbc
+/*  f041b8c:	0fc2b6ef */ 	jal	bullettailTick
 /*  f041b90:	8d040004 */ 	lw	$a0,0x4($t0)
 /*  f041b94:	10000027 */ 	b	.L0f041c34
 /*  f041b98:	8fbf0024 */ 	lw	$ra,0x24($sp)
diff --git a/src/game/game_0abe70.c b/src/game/game_0abe70.c
index b3e7cb7e1..fa8ad28a2 100644
--- a/src/game/game_0abe70.c
+++ b/src/game/game_0abe70.c
@@ -2090,82 +2090,30 @@ glabel var7f1accf4
 /*  f0adbb8:	27bd0190 */ 	addiu	$sp,$sp,0x190
 );
 
-GLOBAL_ASM(
-glabel func0f0adbbc
-/*  f0adbbc:	27bdffe8 */ 	addiu	$sp,$sp,-24
-/*  f0adbc0:	afbf0014 */ 	sw	$ra,0x14($sp)
-/*  f0adbc4:	80820000 */ 	lb	$v0,0x0($a0)
-/*  f0adbc8:	0442003c */ 	bltzl	$v0,.L0f0adcbc
-/*  f0adbcc:	8fbf0014 */ 	lw	$ra,0x14($sp)
-/*  f0adbd0:	808e0001 */ 	lb	$t6,0x1($a0)
-/*  f0adbd4:	2401fffe */ 	addiu	$at,$zero,-2
-/*  f0adbd8:	244f0001 */ 	addiu	$t7,$v0,0x1
-/*  f0adbdc:	15c10009 */ 	bne	$t6,$at,.L0f0adc04
-/*  f0adbe0:	00000000 */ 	nop
-/*  f0adbe4:	a08f0000 */ 	sb	$t7,0x0($a0)
-/*  f0adbe8:	80980000 */ 	lb	$t8,0x0($a0)
-/*  f0adbec:	2419ffff */ 	addiu	$t9,$zero,-1
-/*  f0adbf0:	2b010002 */ 	slti	$at,$t8,0x2
-/*  f0adbf4:	54200031 */ 	bnezl	$at,.L0f0adcbc
-/*  f0adbf8:	8fbf0014 */ 	lw	$ra,0x14($sp)
-/*  f0adbfc:	1000002e */ 	b	.L0f0adcb8
-/*  f0adc00:	a0990000 */ 	sb	$t9,0x0($a0)
-.L0f0adc04:
-/*  f0adc04:	3c02800a */ 	lui	$v0,%hi(g_Vars)
-/*  f0adc08:	24429fc0 */ 	addiu	$v0,$v0,%lo(g_Vars)
-/*  f0adc0c:	8c480034 */ 	lw	$t0,0x34($v0)
-/*  f0adc10:	29010009 */ 	slti	$at,$t0,0x9
-/*  f0adc14:	10200008 */ 	beqz	$at,.L0f0adc38
-/*  f0adc18:	00000000 */ 	nop
-/*  f0adc1c:	c4840020 */ 	lwc1	$f4,0x20($a0)
-/*  f0adc20:	c4460044 */ 	lwc1	$f6,0x44($v0)
-/*  f0adc24:	c48a0028 */ 	lwc1	$f10,0x28($a0)
-/*  f0adc28:	46062202 */ 	mul.s	$f8,$f4,$f6
-/*  f0adc2c:	46085400 */ 	add.s	$f16,$f10,$f8
-/*  f0adc30:	10000019 */ 	b	.L0f0adc98
-/*  f0adc34:	e4900028 */ 	swc1	$f16,0x28($a0)
-.L0f0adc38:
-/*  f0adc38:	0c004b70 */ 	jal	random
-/*  f0adc3c:	afa40018 */ 	sw	$a0,0x18($sp)
-/*  f0adc40:	44829000 */ 	mtc1	$v0,$f18
-/*  f0adc44:	8fa40018 */ 	lw	$a0,0x18($sp)
-/*  f0adc48:	04410005 */ 	bgez	$v0,.L0f0adc60
-/*  f0adc4c:	46809120 */ 	cvt.s.w	$f4,$f18
-/*  f0adc50:	3c014f80 */ 	lui	$at,0x4f80
-/*  f0adc54:	44813000 */ 	mtc1	$at,$f6
-/*  f0adc58:	00000000 */ 	nop
-/*  f0adc5c:	46062100 */ 	add.s	$f4,$f4,$f6
-.L0f0adc60:
-/*  f0adc60:	3c012f80 */ 	lui	$at,0x2f80
-/*  f0adc64:	44815000 */ 	mtc1	$at,$f10
-/*  f0adc68:	3c013f00 */ 	lui	$at,0x3f00
-/*  f0adc6c:	44818000 */ 	mtc1	$at,$f16
-/*  f0adc70:	460a2202 */ 	mul.s	$f8,$f4,$f10
-/*  f0adc74:	3c014000 */ 	lui	$at,0x4000
-/*  f0adc78:	44813000 */ 	mtc1	$at,$f6
-/*  f0adc7c:	c48a0020 */ 	lwc1	$f10,0x20($a0)
-/*  f0adc80:	46104482 */ 	mul.s	$f18,$f8,$f16
-/*  f0adc84:	c4900028 */ 	lwc1	$f16,0x28($a0)
-/*  f0adc88:	46123100 */ 	add.s	$f4,$f6,$f18
-/*  f0adc8c:	46045202 */ 	mul.s	$f8,$f10,$f4
-/*  f0adc90:	46088180 */ 	add.s	$f6,$f16,$f8
-/*  f0adc94:	e4860028 */ 	swc1	$f6,0x28($a0)
-.L0f0adc98:
-/*  f0adc98:	c4920028 */ 	lwc1	$f18,0x28($a0)
-/*  f0adc9c:	c48a001c */ 	lwc1	$f10,0x1c($a0)
-/*  f0adca0:	2409ffff */ 	addiu	$t1,$zero,-1
-/*  f0adca4:	4612503e */ 	c.le.s	$f10,$f18
-/*  f0adca8:	00000000 */ 	nop
-/*  f0adcac:	45020003 */ 	bc1fl	.L0f0adcbc
-/*  f0adcb0:	8fbf0014 */ 	lw	$ra,0x14($sp)
-/*  f0adcb4:	a0890000 */ 	sb	$t1,0x0($a0)
-.L0f0adcb8:
-/*  f0adcb8:	8fbf0014 */ 	lw	$ra,0x14($sp)
-.L0f0adcbc:
-/*  f0adcbc:	27bd0018 */ 	addiu	$sp,$sp,0x18
-/*  f0adcc0:	03e00008 */ 	jr	$ra
-/*  f0adcc4:	00000000 */ 	nop
-);
+void bullettailTick(struct bullettail *tail)
+{
+	if (tail->age >= 0) {
+		if (tail->unk01 == -2) {
+			tail->age++;
+
+			if (tail->age > 1) {
+				tail->age = -1;
+			}
+		} else {
+			if (g_Vars.lvupdate240 <= 8) {
+				// Not lagging
+				tail->dist += tail->speed * g_Vars.lvupdate240f;
+			} else {
+				// Lagging
+				tail->dist += tail->speed * (2 + random() * (1.0f / U32_MAX) * 0.5f);
+			}
+
+			if (tail->dist >= tail->maxdist) {
+				tail->age = -1;
+			}
+		}
+	}
+}
 
 GLOBAL_ASM(
 glabel func0f0adcc8
diff --git a/src/game/game_0b63b0.c b/src/game/game_0b63b0.c
index bd509af8f..bf2991dcf 100644
--- a/src/game/game_0b63b0.c
+++ b/src/game/game_0b63b0.c
@@ -13910,7 +13910,7 @@ glabel func0f0c228c
 /*  f0c22a0:	3c04800a */ 	lui	$a0,%hi(g_Vars+0x64)
 /*  f0c22a4:	008e2021 */ 	addu	$a0,$a0,$t6
 /*  f0c22a8:	8c84a024 */ 	lw	$a0,%lo(g_Vars+0x64)($a0)
-/*  f0c22ac:	0fc2b6ef */ 	jal	func0f0adbbc
+/*  f0c22ac:	0fc2b6ef */ 	jal	bullettailTick
 /*  f0c22b0:	24840814 */ 	addiu	$a0,$a0,2068
 /*  f0c22b4:	0fc4a25f */ 	jal	propGetPlayerNum
 /*  f0c22b8:	8fa40020 */ 	lw	$a0,0x20($sp)
@@ -13918,7 +13918,7 @@ glabel func0f0c228c
 /*  f0c22c0:	3c04800a */ 	lui	$a0,%hi(g_Vars+0x64)
 /*  f0c22c4:	008f2021 */ 	addu	$a0,$a0,$t7
 /*  f0c22c8:	8c84a024 */ 	lw	$a0,%lo(g_Vars+0x64)($a0)
-/*  f0c22cc:	0fc2b6ef */ 	jal	func0f0adbbc
+/*  f0c22cc:	0fc2b6ef */ 	jal	bullettailTick
 /*  f0c22d0:	24840fb8 */ 	addiu	$a0,$a0,4024
 /*  f0c22d4:	8fb80020 */ 	lw	$t8,0x20($sp)
 /*  f0c22d8:	3c19800a */ 	lui	$t9,%hi(g_Vars+0x314)
@@ -13938,7 +13938,7 @@ glabel func0f0c228c
 /*  f0c2310:	25090004 */ 	addiu	$t1,$t0,0x4
 /*  f0c2314:	254ad150 */ 	addiu	$t2,$t2,%lo(g_Fireslots)
 /*  f0c2318:	012a2021 */ 	addu	$a0,$t1,$t2
-/*  f0c231c:	0fc2b6ef */ 	jal	func0f0adbbc
+/*  f0c231c:	0fc2b6ef */ 	jal	bullettailTick
 /*  f0c2320:	afa2001c */ 	sw	$v0,0x1c($sp)
 /*  f0c2324:	8fa3001c */ 	lw	$v1,0x1c($sp)
 .L0f0c2328:
@@ -13950,7 +13950,7 @@ glabel func0f0c228c
 /*  f0c233c:	01625823 */ 	subu	$t3,$t3,$v0
 /*  f0c2340:	000b5900 */ 	sll	$t3,$t3,0x4
 /*  f0c2344:	256c0004 */ 	addiu	$t4,$t3,0x4
-/*  f0c2348:	0fc2b6ef */ 	jal	func0f0adbbc
+/*  f0c2348:	0fc2b6ef */ 	jal	bullettailTick
 /*  f0c234c:	018d2021 */ 	addu	$a0,$t4,$t5
 .L0f0c2350:
 /*  f0c2350:	8fbf0014 */ 	lw	$ra,0x14($sp)
diff --git a/src/game/propobj.c b/src/game/propobj.c
index 5d51d125c..e66db74f6 100644
--- a/src/game/propobj.c
+++ b/src/game/propobj.c
@@ -28122,12 +28122,12 @@ u32 func0f07e474(struct prop *prop)
 	if (obj->type == OBJTYPE_AUTOGUN) {
 		struct autogunobj *autogun = (struct autogunobj *)prop->obj;
 
-		if (autogun->unk9c) {
-			func0f0adbbc(autogun->unk9c);
+		if (autogun->bullettail) {
+			bullettailTick(autogun->bullettail);
 		}
 	} else if (obj->type == OBJTYPE_CHOPPER) {
 		struct chopperobj *chopper = (struct chopperobj *)prop->obj;
-		func0f0adbbc(chopper->fireslotthing->unk04);
+		bullettailTick(chopper->fireslotthing->bullettail);
 	} else if (obj->type == OBJTYPE_LIFT) {
 		liftTick(prop);
 	} else if (obj->type == OBJTYPE_ESCALATOR) {
diff --git a/src/include/game/game_0abe70.h b/src/include/game/game_0abe70.h
index b37fd69bb..31b4e6cb3 100644
--- a/src/include/game/game_0abe70.h
+++ b/src/include/game/game_0abe70.h
@@ -7,7 +7,7 @@ u32 func0f0abe70(void);
 u32 func0f0ac138(void);
 u32 func0f0ac4b8(void);
 u32 func0f0acb90(void);
-void func0f0adbbc(struct fireslot04 *fireslot04);
+void bullettailTick(struct bullettail *bullettail);
 u32 func0f0adcc8(void);
 u32 func0f0ade00(void);
 u32 func0f0ae964(void);
diff --git a/src/include/types.h b/src/include/types.h
index 69b03aa38..e5deafec9 100644
--- a/src/include/types.h
+++ b/src/include/types.h
@@ -1135,7 +1135,7 @@ struct autogunobj { // objtype 0d
 	/*0x90*/ u32 unk90;
 	/*0x94*/ u32 unk94;
 	/*0x98*/ u32 unk98;
-	/*0x9c*/ struct fireslot04 *unk9c;
+	/*0x9c*/ struct bullettail *bullettail;
 	/*0xa0*/ u32 unka0;
 	/*0xa4*/ u32 unka4;
 	/*0xa8*/ u8 autogun_type;
@@ -3271,8 +3271,8 @@ struct room {
 	/*0x88*/ u32 unk88;
 };
 
-struct fireslot04 {
-	s8 unk00;
+struct bullettail {
+	s8 age;
 	s8 unk01;
 	u32 unk04;
 	u32 unk08;
@@ -3280,20 +3280,20 @@ struct fireslot04 {
 	u32 unk10;
 	u32 unk14;
 	u32 unk18;
-	f32 unk1c;
-	f32 unk20;
+	f32 maxdist;
+	f32 speed;
 	u32 unk24;
-	f32 unk28;
+	f32 dist;
 };
 
 struct fireslotthing {
 	/*0x00*/ u32 unk00;
-	/*0x04*/ struct fireslot04 *unk04;
+	/*0x04*/ struct bullettail *bullettail;
 };
 
 struct fireslot {
 	/*0x00*/ s32 unk00;
-	/*0x04*/ struct fireslot04 unk04;
+	/*0x04*/ struct bullettail bullettail;
 };
 
 struct menulayer {