The Firing Line Forums

Go Back   The Firing Line Forums > Hogan's Alley > Handguns: The Revolver Forum

Thread Tools Search this Thread
Old Yesterday, 02:51 PM   #1
Big Caliber
Senior Member
Join Date: October 10, 2006
Location: S. CA
Posts: 401
44M load hits to the left

I bought a new (to me) S&W 629-5. Took it to the range and set the target out at 20 (twenty) yards. Shooting from a pistol rest, I loaded my own 240grain LSWC's in magnum cases to get a 44 special load running at 900fps. After tweaking the sight it shoots straight as a laser at that range.

Now, using my own magnum load of a 240 JHP, using the same brass and primers (WLP), and pushing to the bullet to 1500fps, from the same rest, I find the point of impact is 2-3 inches to the left of the point of aim. The powder charge is 20 grains of AA #9, which is the max according to AA.
When I go back to the "special" loads, I hit what I aim at again.

I suspect the problem is operator error. Would the additional velocity account for the shift to the left? Or is it just me? At 6'4" and closing in on 300#'s, I'm not bothered by the recoil too much. What do ya think???
Big Caliber is offline  
Old Yesterday, 03:10 PM   #2
Pond, James Pond
Senior Member
Join Date: July 12, 2011
Location: Top of the Baltic stack
Posts: 4,718
Could it be an incognito flinch? 600fps is a big jump from the .Spl load!!

There is also that sort of clock-face diagram matching different POI rom POA to different shooter behaviours/faults. Perhaps that might help....
When the right to effective self-defence is denied, that right to self-defence which remains is essentially symbolic.
Freedom: Please enjoy responsibly.
Any idea that relies on murder for its survival in intrinsically weak.
Pond, James Pond is online now  
Old Yesterday, 03:13 PM   #3
Senior Member
Join Date: January 11, 2012
Location: Indiana
Posts: 443
It very well could be you are pulling the shot .
You may be anticipating the recoil ??
Next time you shoot have some one else try a shot or two .
That should tell the tale
KEYBEAR is offline  
Old Yesterday, 06:58 PM   #4
black mamba
Senior Member
Join Date: September 13, 2011
Location: O'Fallon, MO
Posts: 617
Check yourself for a flinch. Put one round in, skip a chamber, fill the next two and leave the last two empty. Spin the cylinder when you close it and don't look at it. You won't know whether you have a live round or not, and when the hammer falls on an empty, see how much the muzzle moves.
black mamba is offline  
Old Yesterday, 07:13 PM   #5
Senior Member
Join Date: November 23, 2009
Posts: 3,308
Your reloads are out of parallel, just rotate them in the chamber one half turn to the right.
kilimanjaro is offline  
Old Yesterday, 07:43 PM   #6
Senior Member
Join Date: April 20, 2009
Location: Helena, AL
Posts: 3,306
Shoot a group Left Handed. If the shots print to the right, the issue is you. I had the same problem when I first shot a 6" 29 from a rest. After I took a two hand hold on the rest, things settled down.
GeauxTide is offline  
Old Yesterday, 08:30 PM   #7
Senior Member
Join Date: January 1, 2007
Location: Idaho
Posts: 2,111
Maybe the two loads have a different poi
salvadore is online now  
Old Yesterday, 08:30 PM   #8
Senior Member
Join Date: August 19, 2004
Posts: 5,549
I wouldn't expect them to shoot to the same windage, necessarily.

I've encountered many loads across the board in numerous calibers with windage variations through the same gun.

You may quite possibly never get those two to match up in the same gun.
DPris is online now  
Old Yesterday, 09:36 PM   #9
Senior Member
Join Date: October 11, 2014
Posts: 221
Why should two different loads, 600fps apart, shoot to the same point of impact??? I would never expect them to.
jackmoser65 is offline  
Old Yesterday, 09:49 PM   #10
Senior Member
Join Date: March 26, 2007
Posts: 258
This target was shot with a S&W M69 (5 Shot L Frame .44 Mag). Target shot at 25 yds over a rest with the rear sight bottomed out. Only shot two of each load to reduce impact of recoil induced fatigue. Point of aim center diamond for all groups. Note point of impact differences both horizontal and vertical.


Paul105 is offline  
Old Today, 08:14 AM   #11
Senior Member
Join Date: February 26, 2013
Location: Ashtabula, OH
Posts: 453
"What do ya think???"

I think you'd get different results with a Ransom Rest.

The human hand will respond differently to different loads, and that's what I think is causing the variation in left-to-right POI. If you can test both loads in a fixed rest, then you can be sure.

Then all you have to do is adjust the sights or POA to each load.
Carmady is offline  
Old Today, 11:50 AM   #12
Senior Member
Join Date: October 9, 2015
Location: Croatia
Posts: 118
That's a really big difference in muzzle velocity. The .44 Spc load is subsonic, the magnum load is supersonic which makes for a different situation aerodynamics wise. Besides, it's spinning much faster.

With such different ammo it's not surprising if you have to adjust sights at 25 yards.

Last edited by Branko; Today at 11:58 AM.
Branko is offline  

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

All times are GMT -5. The time now is 02:00 PM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2016, vBulletin Solutions, Inc.
This site and contents, including all posts, Copyright © 1998-2015 S.W.A.T. Magazine
Copyright Complaints: Please direct DMCA Takedown Notices to the registered agent:
Contact Us
Page generated in 0.10778 seconds with 9 queries