9mm Question, purely a matter of curiosity

[Moby Clarke]

I carry an HK P7 PSP and since it was designed around NATO Spec ammo, I carry +p 124 grn rounds. 147 grns is not recommended for the P7 and since my MK9 is the pack up, I carry the same stuff in it. Obviously, I ran about 150 rounds of carry ammo through both to ensure reliability.

[cgo99]

Speer Gold Dot 115 standard, only because I seem to be more accurate with it and I rather be more accurate with than not hit with bigger bullet.
I'm sure is different for other folk.

[jocko]

that P7 is a really nice peace..

[ripley16]

that P7 is a really nice peace..

Yes it is, but I've never seen any prohibition from HK concerning the use of 147gr ammo. The only prohibition I've seen is against light bullets less than 100 gr. Most of the LE agencies that used the P7 carried the heavier rounds. Moby, do you have a source from HK concerning the 147gr ammo?

[aray]

For now I'm going with the 124 grain standard pressure. +P, for me, has more recoil on my CW9 and it takes me much longer to reacquire my front sights on the target. I'd rather make more holes in a tight group, than bigger holes but fewer of them and in a wider spread.

I'm still experimenting with various brands. Besides variations in recoil like above, I'm testing them for things like size of the flash (bad for night vision), etc.

[Chuck54]

When our agency issued P7M8s we were issued 115 grain SilverTips

I like my T9 better than the P7M8, I also like 124 Gold Dots for my carry ammo standard or +P which ever I can get.

[Goffman]

I'm surprised that the standard pressure round is coming out as close as it is to the +P in the poll at the top of this page.

[joshh]

When we redesigned the Ranger T Series of ammunition we widened the velocity window under which the round would expand to allow for the slower velocities that shorter than standard barrels produce. What this means is that if you own a standard or sub compact pistol the round should have adequate expansion. In 9mm I would recommend the 147 grain bullet as it loses a lower velocity percentage than the faster lighter bullet in shorter than normal barrels. This is because the bullet has more dwell time in the bore and has a greater opportunity to burn the powder before the bullet exits the bore. Powder that is burned outside the bore does nothing for velocity. The lighter faster bullets generally have more powder to burn and since the lighter faster bullets have less time in the bore they are not efficient burners of powder in the shorter barrels.

We increased the velocity window under which the round would expand by increasing the size of the hollowpoint, tweaking the jacket thickness and the depth of the cuts on the inside of the jacket petal segments.

Sincerely,

Paul Nowak
Senior Technical Specialist
Winchester Law Enforcement Ammunition

[deadhead1971]

Thanks.

[Goffman]

Just one more reviving of this thread to see if we can get a few more responses to the poll at the top of the page. Thanks.

[100percent]

I like 95 gr FMJ. They really have a lot of sting to them.

[mr surveyor]

I tend to like the 124 gr jhp's, either standard or +p... they've make nice accurate holes with every 9mm firearm I've owned. Doesn't really matter to me whether it's 115's, 124's or 147's, as long as the gun will function properly, reliably and consistantly with them. Almost all of the good quality SD ammo (except for the gimmic stuff and special use stuff) should handle the needs for self defense.

surv

[HadEmAll]

127 grain Winchester +P+ in my long barrels

115 grain Winchester and Speer +P+ in my shorter barrels

[jocko]

considering kahr s ay no +P+ in their guns, there must be a reason for that..

[HadEmAll]

considering kahr s ay no +P+ in their guns, there must be a reason for that..

My Kahr's are all .40. I shoot the +P+ in different models of Berettas and one Sig.