Plated -VS- FMJ bullets?

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I found using plated bullets in short barrel pistols (less than 3.5in) that use polygonal riffling instead of the usual lands/grooves can be a problem.

I have Kahr’s and HK’s in 9mm and 40 s&w that have accuracy trouble when shooting plated stuff – really horrible groups.

I tried lots of different loads and setup and was never happy.

I ended up giving the 9mm and 40s&w plated stuff to a friend.

Those same pistols never have a problem with jacketed.
 
I have Kahr’s and HK’s in 9mm and 40 s&w that have accuracy trouble when shooting plated stuff – really horrible groups.

I tried lots of different loads and setup and was never happy.

I'm picking up a USP 9mm full size tomorrow and would like to know which HK and what bullet type you had trouble with.
 
I found using plated bullets in short barrel pistols (less than 3.5in) that use polygonal riffling instead of the usual lands/grooves can be a problem.

I have Kahr’s and HK’s in 9mm and 40 s&w that have accuracy trouble when shooting plated stuff – really horrible groups.
Hmmmmm. No problem here with my "hexagonal rifled" Glock 27 - shoots as accurate as my G22 with plated bullets (Rainier, Berrys, PowerBond in 165/180 gr).

Maybe it's Kahr/HK thing?

Can other Karh/HK owners confirm this?
 
PO2Hammer,

Both Kahr PM9 using 115gr RN and PM40 using 165gr RNFP were the worst behaving with plated.

My P2000SK in 40S&w did better than the Kahr's but still not as well as plated.

It helped some if loads used were at/near max limit.

The same loads that would give the kahr PM9 an accuracy fit worked fine from my Walter P99 and a friends Sig P239.

YMMV
 
My kahr CW40 just hates plated bullets, my Sig 226 is so-so, my CZ40 does not seem to differ from my Jacketed bullets.

Just my .2cents
 
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