I don't know why....

[CALI SHOT DOC]

but for 9mm i can only shoot 115g rounds. Anything higher and i can't hit anything to save my soul.....

[USMC 82-86]

That is odd. What other caliber handguns do you own? You may have a slight difference in POI but I can't imagine having a complete loss of control in accuracy.

[CALI SHOT DOC]

That is odd. What other caliber handguns do you own? You may have a slight difference in POI but I can't imagine having a complete loss of control in accuracy.

I only own 9mm and 22lr but i shoot my uncles 1911 in 45auto all the time and don't have any problem. It's just with the 9mm. I don't know what the problem is but i can be shooting horrible and then switch to 115g and then i'm own like donkey kong lol. I have about 800 125g reloads i bought from miwal but i'm going to be getting my own reloader and just reload 115g. POI is weird. 15yds and it's pretty much a 12 oclock hold (covering up my target with my sight) on my glock 17. I also shoot most of the time with a TLR-1 light on it with in theory help with recoil with the added weight it brings to the front. I'm just weird i guess....

[USMC 82-86]

Try it without the light next time. Those frames can flex on recoil I am not sure how large you light is but it could shift the balance of the gun. I saw a guy the other night who just picked up his G17 and was frustrated because he said his gun had a horrible accuracy problem. I was shooting my G19 and he asked my to try his if I didn't mind.
I took 5 shot at 7 yards and the hole was just bigger than a quarter not great but not bad. He shot again and was everwhere and I mean everywhere. I had him put the pistol high in the web of his hand with his thumb out, and then apply pressure on the grip with just his second and third finger. I then told him to just barely place his pinky finger on the pistol and place the heel palm area of his left hand on the exposed area of the grip and simply wrap his fingers around the fingers of his right hand. I told him to relax his thumbs and just let the shot happen and bam he was dead on target. My point is always look at your basics when things start to go down hill. I sit and practice my grip on the pistol when I dry fire, I regrip after every shot just to make sure it is right everytime. If you practice 1000 times wrong, you just made it permanent. It takes perfect practice to make it perfect. Golf and archery same thing basics. Grip, posture, stance, balance, breathing and follow through. I see a lot of folks struggle because they don't breathe, there is a difference in taking a shot during the pause between breaths and holding your breath for extended lengths of time. These things I mentioned may not be your problem but without seeing you shoot it doesn't hurt to check the basics.

[bluenoise]

It would be interesting to have someone else load up a couple magazines with a random blend of bullet weights and see if it affects your groups. Have whoever loads up the magazines keep track of which shot was each type of bullet and see how they compare.