My only issue with the 147gr ammo is how it does in short barrels. It seems no one hardly ever does short barrel tests.
I do agree the 147 would be the most effective in a 4"+ barrel but id stick with a 124gr in a 3" until i saw better evidence.
Im the same way with all short barreled guns.
3" .40 id use a 165gr +P
3" 1911 id use a 200gr +p
But as long as its a 4" and longer barrel i always prefer the highest weight bullet since it should reach max fps speeds so it can penetrate enough and reliably expand.
Heavier the bullet, the more resistance, and the more forgiving it is to slower powders in short barrels.
If you can't find short barreled tests, you aren't looking very hard.
www.ballisticsbytheinch.com
http://www.kahr.com/PA-1B/review_GUNS0710.html
http://www.kahr.com/PA-1B/review_ch0809.html
http://www.kahr.com/PA-1B/review_st0808.html
http://www.kahr.com/PA-1B/review_hgbg08.html
http://www.kahr.com/PA-1B/review_cch2006.html
http://www.kahr.com/PA-1B/review_police0905.html
The odd part is when you hit about 350 grains, you can use slow burning powders in 2" barrels, and get very little reduction in velocity.
As you can see from the above tests, short barrel results are really determined by what kind of powder the ammunition maker uses.
It really gets down to you have to find a test for your gun, with that ammunition, since ammunition is all over the charts, as far as to how well it works in short barrels.
One suggestion about the above results:
The biggest flower isn't always the winner. Explosive, big expansion in these calibers, is the result at the expense of penetration. Also, when that parachute opens up, it REALLY slows penetration through the target.
If you believe the FBI, who say that the most important factor in any handgun round is penetration, then perhaps the winner is the bullet that opens up the least, and penetrates the most.
Another great source for actual gun tests with ammunition is
www.buffalobore.com
The list real life chronograph tests for real guns, real ammunition;
http://www.buffalobore.com/index.php?l=product_detail&p=105
While it doesn't apply here, since most of the ammo in 9MM he designs is tested in 4" or longer barrels, his short barreled loads show the potential, and provide a good bench mark for what is
possible out of a given barrel length, with a certain bullet.