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Old 07-10-2007, 09:45 PM   #1
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Informal Wetpack Test: Winchester 9mm 147-gr. STHP

Hello. I received a request for any wetpack/water test that I might have done on Winchester USA 9mm 147-gr JHP ammunition. Well, I've not done that one. I have done the same company's Silvertip Hollow Point. Both versions are loaded to the same nominal velocities and the bullets are the same except for the silver-colored electroless nickle on the STHP's gilding metal. (It is true that initial runs of the STHP did have aluminum jackets but that was changed years ago. It is my understanding that at the present time only the .32 ACP STHP utilizes the aluminum jacket material.)



The primary difference between the STHP and the USA besides the color of the respective bullets is cost. The STHP does cost more but this is not so much for the "silver bullet" as it is for consistency. The USA version of Winchester's ammunition is less costly because it is from runs in which the ammunition's performance does not fall within the designated control parameters. In other words, let's say that the specs call for a standard deviation of no more than 25 ft/sec and we get 30; ammo from this run is sold under the USA name. If the specs for the 147-gr. bullet calls for no more than a half-grain difference in weight and a run of bullets has say 3/4-grain variation, they're loaded in the USA ammo. The same would go for cases and their specs.



Anyway, in 115-gr and 147-gr I've not been able to detect any difference in expansion so if we look at the 147-gr. STHP's performance, we would see essentially the same thing with their USA 147-gr. JHP from what I've seen.



Fired from a Browning Hi Power Mk III w/factory bbl, the 147-gr. STHP's average velocity was 948 ft/sec with an Std Deviation of 16.

It is a bit slower than either the Speer GDHP or Remington GS in this bullet weight, at least from the two Hi Powers I tried it in.





Fired into wetpack, the bullet averaged 7" penetration and usually lost but a couple of grains, the average recovered bullet weighing about 145 grains. This one measured 0.64 x 0.61 x 0.42" tall.



While I have not fired all that many 9mm rounds in this bullet weight, I have yet to find any that did not function just fine in the Hi Power and accuracy has been very good to boot.



For folks who are strapped financially or simply don't see the "designer bullets" as that essential to the "stopping power" equation, less costly ammunition such as the USA might make an attractive package. I am told, but have not checked to verify or "document" that Winchester quietly tweaked its 115-gr. JHP/STHP to expand a tiny bit less and penetrate a bit more after the Miami Fiasco in the '80's. Where 147-gr. 9mm bullets didn't expand all that reliably way back when, it has been my observation that they do now.



If the 147-gr. is not particularly my "cup of tea" for "serious 9mm" rounds, that does not mean that they are not effective nor reasonable choices for folks wanting as much bullet mass as possible in the caliber. Like other "old techology" bullets, I suspect that the STHP or USA JHP in this weight might not do so well when fired through intermediate barriers when compared to more recent designs. That doesn't have to mean that they are doomed to failure each and every time that they're called upon to save one's hide.



Hopefully, this will be "close enough" to the request for information on the USA 147-gr. JHP; I truly think results from the actual load would be the same. In any event, it is the closest that I currently have.



Best.



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Old 07-10-2007, 10:18 PM   #2
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Informal Wetpack Test: Winchester 9mm 147-gr. STHP

Howdy Mr. Steve,



Thanks for a very interesting report sir. Back in the years when the only choices were 115gr and 147gr JHP (post Miami) the agency I worked for elected to select the 147gr. I frankly always wondered how it would perform in something akin to real world, but never was required to find out.



I do have a fair amount of both 124gr and 147gr Federal H-S HP on hand, so it is nice to know the 147s do seem to do better these days than was alleged for them earlier on.



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Old 07-10-2007, 10:24 PM   #3
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Informal Wetpack Test: Winchester 9mm 147-gr. STHP

Hello Mr. Camp & Thanks very much for the review.



If the 147gr bullet was doing atleast 1,000 fps I'd like it even better. What difference in penetration do you suppose it would make if it was?



7" inches into wet pack = about 12-13" inches in tissue correct?



Thanks Again.
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Old 07-10-2007, 10:57 PM   #4
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Informal Wetpack Test: Winchester 9mm 147-gr. STHP

Hello. I'm glad that the post was of interest. Yes, this 147-gr. should do around 13" or so in gelatin. If felons I think it should give satisfactory penetration although I think the depth will be dependent upon other factors such as what organs where smacked or if bone was/wasn't struck.



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Old 07-11-2007, 12:07 AM   #5
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Informal Wetpack Test: Winchester 9mm 147-gr. STHP

Hello,



My bad, sorry, I meant gelatin.
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"LONG LIVE THE FN-BROWNING-SAIVE HIGH POWER"

John Browning & Dieudonne Saive's Designs Will Always be Light Years Ahead of All the Others.

I'd rather beat a bad guy to death with my Browning High Power, than shoot him dead with a "plastic pistol".

Fighting Tyrants & Traitors is a 24/7 Job that Must be Done!

The Second Amendment was not written in order to protect your right to shoot deer, it was written to protect your right to shoot tyrants if they take over the government. ~ Judge Andrew Napolitano

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Old 07-22-2007, 08:34 AM   #6
 
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Informal Wetpack Test: Winchester 9mm 147-gr. STHP

Thanks Stephen. Interestingly, my local Wal-Mart used to carry both the 115g. and 147g. 9mm USA JHPs. For the last year or so, they only carry the 147g. I'm not sure why they dropped the lighter bullet, which has done a bit better in other tests I've seen. It's nice to know that this heavier "economy" round will do the job in a pinch.
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