change of poi as gun warms up?

svandamme · #1 10-23-2011, 09:53 AM

I'm relatively new at this, have about 350 rounds down with my PM7.
It shoots low, have adjusted the sights up.. But i get the idea that the point of impact changes as the gun warms up?
At 10 meters, If i aim for dead center when cold , i'm below the black.
But after 30-35 rounds, i'm right on the money where i aim.

Had this several times now.. but not sure if i am doing this myself, or does the POI considerably change as the gun warms up?

zenfly · #2 10-23-2011, 10:52 AM

If you're new it may be a good idea to have someone else who you know in a good shooter run it for you off a bench and bags.. Also I have a diopter that goes on my glasses that help you get the target and the sights more in focus at the same time.. I bought it back when i used to shoot a 85lb steel rams at 200yds. in IHMSA.. A very handy item..

Edit: I just searched for a clip on diopter and can't find one... Get a pair of old glasses and use a piece of tape with a 1/16" hole punched in it and tape on the lens over your dominant eye and peek through the hole.. you'll see real cheep how it works with the pistol sights..

svandamme · #3 10-23-2011, 10:57 AM

I know i'm crap with the 45 offhanded, but 2 handed i've managed some reasonable groups. And it's all in the center, it's just that If i point center when it's cold, i get a low group, reasonable group, but low and it seems to creep up when it warms up.

Guess it's just me then?

douglas_knott · #4 10-23-2011, 02:58 PM

i personally haven't heard of a gun doing what your explaining. are you free handing the shots or using a bag? try using a bag starting out and see how it shoots.

Dave Waits · #5 10-23-2011, 09:35 PM

Sounds like you're pulling down on the trigger. Try shooting from a rest cold.

Riverpigusmc · #6 10-23-2011, 09:56 PM

I agree with

and Dave..shoot from a rest and then you can determine if it's you or the gun..only time I've heard of that is from a full auto weapon when the barrel was HOT..doubt thats your trouble

svandamme · #7 10-24-2011, 06:20 AM

wildo, thanks for the feedback

douglas_knott · #8 10-24-2011, 08:02 PM

Quote:

Originally Posted by svandamme

wildo, thanks for the feedback

let us know the outcome please