Lowering point of impact

[Ned Christy]

I just bought myself another little Remngton .31 from Cabelas and I love it - except for one thing. The point of impact is 8" above point of aim at 25 feet! I'm shooting 12 grains of Goex fffg and a .315 ball with a little Bore Butter in front. What I'm wondering is if changing granulation to ffffg or ffg, or perhaps using Pyrodex or a .318 ball would lower point of impact? I don't want to change the front sight if I can help it - can anyone suggest a solution?

Ned Christy

 

[Norskie]

At that range your powder charge won't have that much effect on your point of impact. You'd need a taller front sight (or a lower rear sight)
Or just aim low. :winking:
Moose

 

[DanChamberlain]

With that gun, what would happen if you simply put the top of the front sight at the absolute bottom of the rear groove? I do this with my '51' Navy. I've opened up the rear notch a bit and deepened it. When I put the front post at the very bottom of the notch now, I get perfect strikes. One needs to be able to adapt.

Dan

 

[PitchyPine]

I just bought myself another little Remngton .31 from Cabelas and I love it - except for one thing. The point of impact is 8" above point of aim at 25 feet! I'm shooting 12 grains of Goex fffg and a .315 ball with a little Bore Butter in front. What I'm wondering is if changing granulation to ffffg or ffg, or perhaps using Pyrodex or a .318 ball would lower point of impact? I don't want to change the front sight if I can help it - can anyone suggest a solution?

Ned Christy

Is that a max load for that pistol, if not i`d try a max load before i do anything else.
Hotter the load the lower the point of impact for pistols .
The bullet will leave the barrel sooner before recoil raises gun as far as with a light load.
At least that has been my experiance.

 

I am not sure where the sights on the .31 are set but I am sure it is not for 25 feet! Most modern pistols are set for 25 yards and most C&B guns for greater ranges than that.

At 25 feet you should be able to hit a coke can by glancing down the top of the frame!

 

[boydusmx]

If you can safely do it, try increasing the powder charge. More powder will increase the bullet velocity, and lower the point of impact due to less barrel riseduring firing. I know this might sound counter-intuitive, but it does work. Do not exceed the maximum allowed charge for your gun!

 

[rebel727]

You can't overcharge a bp revolver. As long as the ball seats far enough down for the cylinder to turn you're ok.

 

[oldmaster]

To Rebel727; You might want to add that this may be ok with steel framed revolvers but not ok with brass framed revolvers. Just my 2 cents. :nono:

 

[walruskid1]

also not a good idea when loading 777! they reccommend 30 or 35 grains max. i would have to check the instructions again to verify.

 

[hildo]

As far as I know it is something like:
Using 777, another substitute or regular blackpowder, you cannot overload the revolver.
777 is said to be approx. 15% more powerfull than regular blackpowder. However you may not use weight as a mesurement for 777 since it is lighter than regular BP, this could become an issue in a musket. A revolver has limited space in the cylinder so when 35 grains of BP will fit, 35 grains 777 will not. When using 777 you should use volume as mesurement. With an identical volume of 777 and BP I believe the explosive power is more or less the same.
Another difference is that BP can be compressed, but 777 is not to be compressed, the ball should just be seated on top of the powder.

With brass frame revolvers, no matter what power you use it commenly known to use lighter loads since brass is not as strong as a steel frame gun. The frame may stretch over time. A serious shooter is better off with a steel frame.

 

[Coot]

I would adjust my load to produce the tightest groups that I could get regardless of point of impact & then change the sights to move the group. Easy enough to file the rear notch deeper or add a taller front but wasted time & metal if you later change the load. I try to stay with a limited number of powders, lubes etc for use in all my guns so as to avoid trying to find, stock & keep up with too much "stuff". Very serious target shooters may need to have much bigger range boxes than others.