Author Topic: Little details affect the pistols at 100 yards!!  (Read 685 times)

0 Members and 1 Guest are viewing this topic.

Offline Joe L

  • Hero Member
  • *****
  • Posts: 7197
Little details affect the pistols at 100 yards!!
« on: May 01, 2021, 06:37:42 PM »
I was almost too excited to get to the range in the mountains of New Mexico to shoot the polymer P-10 CZ's.  I've spent the last two months with the MTR and the AR-15, even got some shorter bipods and new rear squeeze bags to get a better position at the local range.  So I went out early Friday morning for a warm up session in preparation for a 200 yard session on Sunday or Monday, with the P-10S and P-10F pistols. 

It was calm and cool initially, so I had expectations of predominantly 6" groups with both pistols at 100 yards.  I set up the video gear and limited myself to one box of Atlanta Arms 115 JHP ammo for the day. 

I expected some holdover adjustments for a cool day at 6000 feet above sea level compared to a warm day at 800 feet above sea level, but, after 10 rounds in the P-10S, I knew something was wrong.  I couldn't group and the hits were way higher than I expected.  I adjusted the sight, sprayed 5 more rounds, and put the P-10S up in favor of the P-10F. 

Same thing--all high, with a lot of vertical spread and averaged rather large groups.  I finished off the 35 rounds through the P-10F, then loaded up and went home, with only 2 good groups out of 10 to show for what should have been a perfect day for good results. 

When I got home, I started studying the video, after syncing up the target cam to the shooter camera and to the audio.  It finally hit me that I had made one change without considering the possible negative impact it could have on the pistols.  Take a look at this 5 minute condensed video to see what I learned. 



Thriller killer-- don't change your wrist rest setup and expect everything to stay the same as with the old setup.  If the recoil control changes due to grip strength or rest hardness, the bullet holes will shift.  If the rest hardness varies from shot to shot, the holes will string vertically. 

Consistency, after one discovers what works well, is key to long range shooting, whether it is a rifle or a pistol.  At least that's my story and I'm sticking to it. 

Joe
CZ-75B 9mm and Kadet, 97B"E", two P-09's, P-07, P-10C, P-10F, P-10S, MTR

Offline rdcinhou

  • Hero Member
  • *****
  • Posts: 1773
  • Coat of Arms for Uherský Brod
Re: Little details affect the pistols at 100 yards!!
« Reply #1 on: May 02, 2021, 04:36:34 AM »
Thanks for posting and discussing.

I don't shoot with a rest, but then I'm not shooting at distances anywhere near that far.

An observation...your grip seems low and a little loose to me, but that may be caused from shooting with a rest.

It would seem to me that you want to be pushing the gun down hard into the rest so that your forearms and wrist are locked so that there isn't so much movement when pulling the trigger.

Anyone else have an opinion?
CZ24/27/38/40P/45/52, Vzor 50/70,75BΩ,75D Compact,P01/07/09,P10M/S/C/F(9mm,.45), Phantom,SP01 Tactical,Shadow 2 (Blue,Urban Gray), 82/83/85 PreB, 97BE,97BD,97BDE,100,1911A1, 2075D RAMI,452 American,550 Urban Counter Sniper,805 Bren S1,Drake G2,Duo,Z,vz24 8mm Mauser,FK 7.5 BRNO Field Pistol, PSD

Offline radagast

  • Sr. Member
  • ****
  • Posts: 712
Re: Little details affect the pistols at 100 yards!!
« Reply #2 on: May 02, 2021, 06:29:34 AM »
Need a laugh ?
     Serves me right for reading before a morning cup of java, but my first thought was : Huh, are there metal P10s ? Duh ! Thanks for the wake-up Joe.
"Let there be light"  and there was muzzle flash !

Offline Joe L

  • Hero Member
  • *****
  • Posts: 7197
Re: Little details affect the pistols at 100 yards!!
« Reply #3 on: May 02, 2021, 06:51:13 AM »
Thanks for posting and discussing.


An observation...your grip seems low and a little loose to me, but that may be caused from shooting with a rest.

It would seem to me that you want to be pushing the gun down hard into the rest so that your forearms and wrist are locked so that there isn't so much movement when pulling the trigger.

Anyone else have an opinion?

I agree on the grip.  However,  my left wrist is very weak from an injury 50 years ago and it is what it is.  I usually get pretty good results so I quit worrying about it.  But I’ve had people comment about it before, as it is very noticeable in the video. 

It isn’t so important that the grip be rock solid, but that it be exactly the same from shot to shot, and that the surface the gun rest on react exactly the same from shot to shot.  I should be fine when I go back to my old rest setup, even with the gimpy left hand. 

Joe
CZ-75B 9mm and Kadet, 97B"E", two P-09's, P-07, P-10C, P-10F, P-10S, MTR

 

anything