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Discussion Starter #1
Does anyone have the specification on which grain is the best or suggested for the .40 cal P99
 

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I've found that 165 to 180 grains work best in mine, as far as accuracy goes. All the .40 P99's that I've owned have loved 175gr Laser Casts from my reloads.

I thought I read somewhere that the P99 was built mainly for the 180 gr. bullets, because at the time, most police agencies were using that bullet weight. I don't know if they have changed anything since then (1998ish). It seems like most police agencies are using 165 grain Gold Dots.

If you are using your P99 for self defense, I would find out what your local police are using and use it too. That way if you ever are involved in a shooting, the DA can come down on you too hard, because you are using the same thing your local police are using.

Other than that, I would just go buy a bunch of different brands and try them out, to see what works best in your P99. Every gun is different and everyone of them may like something different than the other one. This is especially true in rifles.
 

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155 or 165 grain is generally the best performing

180 grain was originally designed for the 10mm and the higher velocity. 180's sometimes do not expand. the 155 or 165's seem to move fast enough in order to expand with reliability.

I carry Winchester 165 grain SXT on duty
 

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[b said:
Quote[/b] (madecov @ May 23 2006,7:15)]180 grain was originally designed for the 10mm and the higher velocity. 180's sometimes do not expand. the 155 or 165's seem to move fast enough in order to expand with reliability.
If a Winchester Ranger 147 gr 9mm can expand reliably enough for it to be listed as a top defensive load, the 180 grain can be just as reliable.

Besides, they feel really cool when they are fired!

-stunks
 

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depends on the round, some 147's don't expand reliably either.

I just listed my preferances, not saying anything else is wrong or bad.

heavier Hydrashocks have a dismall record on expansion. Gold Dots and Golden sabers have an excellent expansion record as do SXT's

There are no hard and fast rules. So many variable's. I would feel comfortable with any of the newer designs in hollowpoints.
 

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That's cool, madecov, sorry that I came across as kind of an ass.  It was not intentional.

I guess what I was trying to get at is that there're actually lists on the internet and other media with the top self-defensive loadings from various manufacturers.  Those 180s should be great (when listed as such)!  But maybe not the WWB 180 JHPs, right?

-stunks
 

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We all have our likes and dislikes.
I don't think anyone is wrong or more right than any onyone else.

I'm sure that there are some "heavier" bullets that preform well. I guess some of my perceptions are due to age. Back when the 40 was a new round the heavier stuff had a dismal record on expansion. This prejudice has followed through with me over the years
 

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Discussion Starter #8
So what is the specified grain from Walther to be used on a P99 .40
 
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