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Body shots on iguanas

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I wanted to share my most recent findings on my last iguana hunt, but let me begin with my previous experiences.

The first time I went, I took a .30 cal and shot iguanas both in the head and in their vitals. On that trip I noted that body shots did not seem to phase the iguanas, even multi body shots just didn’t seem to put them down. I guess I expected them to react as mammals when they get hit in the vitals but I was getting totally different results. I concluded that iguanas HAD to be shot only between the eye and the ear.

On my following trips, I chose to test the most appropriate caliber for hunting iguanas. I knew that as tough as iguanas are, .30 caliber isn’t necessary and in fact intimidating to use given where most iguanas hunting takes place (in city limits). I tested .22 caliber in the 25-30FPE and of course that worked out well with headshots. However, I was still getting pass throughs and felt uneasy about their use. Next I tried .177 in sub 20FPE. Most shots were 30-40yds. I continued to have pass throughs on iguanas sub 3’ but I can tell that the pellets lost a lot of their energy after passing through. I wouldn’t get pass throughs on larger iguanas. After this trip, I concluded that a .177 sub 20FPE was the optimal caliber for iguana hunts due to:
1. Quietness of the caliber
2. High shot count
3. Size of the rifle (tend to have shorter barrels)
4. Their effectiveness on headshots

In my most recent trip, I wanted to test an old theory: can iguanas be harvested with shots in the vitals with a sub 20FPE? For this test, I used a HW110 that produces 40 shots per fill at 18FPE and I was surprised with my findings. The answer is YES! I harvested over ten iguanas that were strictly shot in the vitals (not all could be collected as some fell in the water). I will say that some large iguanas did require a second or third shot, and most iguanas ran about 10 yds before expiring.

Now the question to be answered is why? Why is it that a .177 body shot seem to be more effective than a .30 cal? My initial thoughts are that since there is no pass through, all the energy is dumped into the iguanas vitals, where pass throughs carry still a lot of its energy outside of the iguanas. Thoughts?
 

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I've taken quite a range of critters with .177, 18-20fpe being the sweet spot for fur while 11-12fpe is better suited for the feathered pests i encouter here. Zero experience with .30 cal, but someday....
I'd imagine these Hades @ 900fps would be devastating. From all the iguana hunting I've seen i'd chose .177 and .22 for sure though for safety as you mentioned.
Did the .30cal body shots pass through at all? What fpe/ammo/airgun combo were you using? So many questions, sorry😅
 

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I wanted to share my most recent findings on my last iguana hunt, but let me begin with my previous experiences.

The first time I went, I took a .30 cal and shot iguanas both in the head and in their vitals. On that trip I noted that body shots did not seem to phase the iguanas, even multi body shots just didn’t seem to put them down. I guess I expected them to react as mammals when they get hit in the vitals but I was getting totally different results. I concluded that iguanas HAD to be shot only between the eye and the ear.

On my following trips, I chose to test the most appropriate caliber for hunting iguanas. I knew that as tough as iguanas are, .30 caliber isn’t necessary and in fact intimidating to use given where most iguanas hunting takes place (in city limits). I tested .22 caliber in the 25-30FPE and of course that worked out well with headshots. However, I was still getting pass throughs and felt uneasy about their use. Next I tried .177 in sub 20FPE. Most shots were 30-40yds. I continued to have pass throughs on iguanas sub 3’ but I can tell that the pellets lost a lot of their energy after passing through. I wouldn’t get pass throughs on larger iguanas. After this trip, I concluded that a .177 sub 20FPE was the optimal caliber for iguana hunts due to:
1. Quietness of the caliber
2. High shot count
3. Size of the rifle (tend to have shorter barrels)
4. Their effectiveness on headshots

In my most recent trip, I wanted to test an old theory: can iguanas be harvested with shots in the vitals with a sub 20FPE? For this test, I used a HW110 that produces 40 shots per fill at 18FPE and I was surprised with my findings. The answer is YES! I harvested over ten iguanas that were strictly shot in the vitals (not all could be collected as some fell in the water). I will say that some large iguanas did require a second or third shot, and most iguanas ran about 10 yds before expiring.

Now the question to be answered is why? Why is it that a .177 body shot seem to be more effective than a .30 cal? My initial thoughts are that since there is no pass through, all the energy is dumped into the iguanas vitals, where pass throughs carry still a lot of its energy outside of the iguanas. Thoughts?
Great post, thanks for sharing it!

Considering that I live almost as far from Florida as an American can live, I doubt I'll ever hunt Iguanas. :( Though, I would love to hunt them!

To me, the caliber and energy performance differences you described doesn't seem logical??? I mean, a .30 caliber hole completely through an Iguana should be more lethal than a .177 caliber that stops inside the torso. Bigger hole and more penetration means more tissue damage. I sure don't 'get' how that isn't the case???

I will be interested to see what other Iguana hunters have experienced on this subject.
 

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