Texan .457 hog shot with NSA 250 gr slug, no squeal

Took the Air Force Texan .457 carbon out last night and managed to get a hog using the NSA 250gr slugs @ 980 FPS. I thought I missed, after the shot he ran off and I heard nothing from him. I always hear them squeal or something. Zero blood and we found the hog about 20 yards away with a thermal tracker. Hit a double lung, so I'm guessing his lungs collapsed making it unable to squeal. That's a first. 

Here is the video. Nothing special and it made me thing I missed.

https://youtu.be/rLFgs1vWfM8



Tiny entry wound (no blood trail) and no exit. I did shoot him in the thick stuff.

Photo of the lungs. The entry wound was tiny but the NSA 250 slugs put holes in the lung, I could stick my fingers through. 

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At that speed I didn't think the slug would expand, and it did not.
About a 120lb'er if I had to guess.

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There are slug makers which make better expanding slugs. At that speed, a slug should mushroom easily. I have some Air Ventury 250s that are like that - hard lead compound and very little hollow chamber. Here is a before and after of a 300 grain from Mr Hollowpoint shot out of my .457 Texan Carbine CF at 3200 psi fill. Target was 15 yards into goopy clay mud, so similar consistency. A full length Texan should work even better.

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Nice job on the hog..250g NSA got the job done. And dead is dead. If your looking for more expansion here are a couple ideas

slugs from NSA that you also might take a serious look at.
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I have these on order to try in ballistic gel. Critters that size I think the NSA 348g would do well


Not knocking MR Hollow point as he offers a great product.And would look at what he sells as well.

Again nice looking hog..

here is a 230g High Arc Hunter sold at AOA shot the other day from my Texan Carbine CF

at 10 yards into 10% gel and the result looks good but only made it 6” will retest at 50yrds
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update;

NSA 281 gr HP-BT-Knurl(10 yards 10% bal gel)14” into gel
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If you want expansion the 281 and 348 are made for like the poster above has in the pictures. They are a very wide mouth slug with a deep/wide cavity and also knurled to reduce bore friction. They are also a boattail to increase BC. In my opinion they are the ultimate hunting bullet in an airgun if you are looking for penetration and expansion. Shoot1721 did a video showing the expansion in gel which is on Youtube.