Can reloads push POI to the right (40S&W)

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GSoD

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So I have a load that groups as nice as factory, soft to shoot and as far as I can do the math makes minor power factor.

Only thing is, I'm pretty sure it shoots 3" to the right at 25 yards.

I shoot a couple of mags of factory. All in the middle. I shoot a couple mags of this stuff and it is definately going right.

Is this possible? Or is it more likely I'm shooting it different, because its softer recoil, and thus moving the POI?

I expect vertical changes. Factory runs at about 1000fps and this stuff is running at about 700 fps according to my finicky chronometer.

Just wondering if I should move my sights to compensate for the load or if the problem is in me to solve.
 
yes it can. stability and spin rate can change how the bullet flies. I had that happen with different reloads on a bench test of my m1a.
 
Considering you are at 25m with a pistol, I would say that while it is possible, it is not probable. I'd work on your shooting with that load and experiment with benching it, and experimenting with it at different distances.
 
Absolutely it can. Try taking a .22 revolver like my S&W K-22. I use winchester ammo and it shoots dead on, I switch to cci stingers and I am 2" low and to the left. Amount of twist rate your barrel uses has a huge factor on the outcome of where the bullet will go depending on weight of bullet and the speed of the bullet and the size of the bullet. In Cowboy action shooting with a fixed sight .45 colt if you need the poi to be higher you increase the weight of the bullet, lower you decrease the weight of the bullet if the speed is kept the same. When I sight in my .45 colt I use my Ransom Rest that is bolted down to the concrete shooting bench and does not move and you would be surprised how much of a difference poi will be with different loads.

As beltfed said, it could be a factor of how you hold and anticipate recoil if you are recoil sensitive but let someone else try your loads and see what happens next time you are at the range.
 
Can you try increasing the velocity to see if it comes back to centre . . . not knowing any of the particulars as to bullet, powder and primer. The factory loads will have a powder specific to what the manufacturer deams optimal. By the same token, if 700 fps is optimal for you, move the sights.
 
This is what I was told many years ago & it seems to be true, in my experience.

The gun starts recoiling the instant the cartridge fires. It is recoiling and moving even while the bullet is traveling down the barrel. Depending upon certain factors such as bullet weight, velocity, grip on the gun , the barrel will be pointing to a slightly different place when it exits the barrel. This affects where it hits the target.

I have used this to change POI on handguns with fixed sights so that they hit centre..
 
could this be a bullet seating problem? have seen dirty seater dies make this happen.to much crud on one side of seating die lets bullets set in a lil off center.When bullet is shot it spins around the centre (which cant change in the barrel) but upon leaving it continues to spin and thus makes bullet fly left or right.Just a thought try cleaning seating dies maybe got a lil crude built up from gas checks or somthing.Or maybe i out to lunch.
 
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