1911 9mm 147gr - am I inducing the POI height

[st1650]

So I used to shoot exclusively a G19X with a DPP with 147 gr. I never worried about my POI because I've always just set my zero at 15 yards and it's hitting where I'm aiming.

Now I acquired a beautiful custom 9mm 1911 with traditional iron/fiber optic sights and even with a low 6 cloak hold, I'm hitting way way high (like a good 4-5in at 15 yards) the groups are fine and tight but the elevation is way too much and I even have adjustable sights and I've bottomed the adjustment and it's still way high, yet when I'm shooting 124gr, I'm dead on POA/POI.

Now I'm aware that there are poi shift when going from 124 to 147 but 5in at 15 yards is massive and I wonder if it could be me. I have really really really large hands and shoot strong hand thumbs over safety with support hand with the thumb riding the slide pointing forward. I also hook my support hand index finger around the trigger guard. I have good recoil control but I'm not sure what's causing this vertical difference beside the whole "subsonic bullets leaves slower therefore it gives more time the barrel to rise up".

I have 2 barrels on that specific 1911(including a very nice Kart custom fitted) and they both do the same.

 

[Old Man with Gun]

Let some other people shoot it and see what happens. Probably not the ammo.

 

[Modoc]

I had something similar happen with a 45 Colt when I went from 240g factory down to 200g CAS loads. If the POI does the same with other shooters, you will need to replace the front sight blade with a taller blade to push the POI down.

 

[E. Bryant]

I've definitely seen this when shooting hot loads through revolvers, but I'm surprised that the very modest difference between 124gr and 147gr 9mm would cause such a difference. As @Old Man with Gun suggested, start with another shooter.

 

[Bigfatcock]

Dwell time.

 

[308pirate]

It's you

 

[cas6969]

Yep. Try some “more traditional” 9mm loadings and see where they’re going. But in truth it’s probably God punishing you for shooting 9mm in a 1911.

Jesus, John Wayne and John Moses Browning are very disappointed in you.

 

[Makinchips208]

Am I inducing the POI height

Yes