I purchased an old model 36 no dash, square butt 1and seven eights inch . Ser no.719xxx. I shot the gun today. my groups were excellent but were low and left. at 20ft groups were very tight(for me) this pattern was consistent out to 45 yards. the last three shots were at 45 yards using a 50 yard rifle target,the three shot group was within one and one half inches but were located on the bottom left of the target.since these are fixed sights is there any fix available other than compensation? thanks rsegars
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excellent groups-wrong spot on target
- Thread starter rsegars
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Alk8944
US Veteran
The gun is nominally regulated for standard velocity 158 gr. Lead bullet ammunition. Anything lighter will shoot low. It may also shoot to one side or the other, or it could be how you are seeing the sights. What bullet weight were you using?
the ammo i was using is american eagle 130 grain fmj.That is certainly a starting point for me.I also have now begun to wonder if I may have a bent yolk. when i close the cylinder there is a small but preceptible difference in the space between the yolk and the frame. this space will close with gentle finger pressure against the yolk. thanks for your help.rsegars
scooter123
Member
You'll find there is a considerable difference in impact using a 158 grain load, probably a good 4 inches or more at 25 yards. As for your yoke fit issues, if your seeing good tight groups I would be inclined to leave it alone, if it's really bent you should be seeing shaving issues on the forcing cone and lousy groupings.
Shooting left can be addressed by "tipping" the barrel slightly (in your case over rotating it a touch) but that is something that should only be done by a gunsmith with the proper tools and experience and after confirming it's shooting left from a benchrest. If it's a pinned barrel it may also require a bit of fitting of the notch for the pin to allow it to be rotated a touch, which means removing the barrel from the frame. Frankly, I'd just practice enough to learn how much Kentucky Windage to apply and leave it alone.
Shooting left can be addressed by "tipping" the barrel slightly (in your case over rotating it a touch) but that is something that should only be done by a gunsmith with the proper tools and experience and after confirming it's shooting left from a benchrest. If it's a pinned barrel it may also require a bit of fitting of the notch for the pin to allow it to be rotated a touch, which means removing the barrel from the frame. Frankly, I'd just practice enough to learn how much Kentucky Windage to apply and leave it alone.
With a gun like yours a respectable grouping consistency is more important then accuracy. If your groups are consistent, low and to the left or otherwise, just adjust your sighting accordingly or...use this gun to shoot at running (your right to left) targets only. Joking aside... like the poster above said experiment with different (heavier and slower) loads before you visit a smith-shop.
Alk8944
US Veteran
rsegars,
First, note the sig-line.
The 130 gr. round nose jacketed ammunition is loaded to Air Force M-41 specifications. It is quite anemic in addition to being light. The only saving grace it has is being relatively cheap.
The first thing to do with a fixed sight revolver, if you want it to shoot to point-of-aim, is to decide what ammunition you want the gun regulated for. There is no way that ammunition using different weight bullets at different velocities will all shoot to the same point.
Most, if not all, of the low issue will be taken care of by using 158 gr. ammunition. The windage may be resolved at the same time. Once you have the gun shooting right for elevation the windage deviation can be handled by a competent gunsmith. There is good reason for the emphasis! Windage is properly adjusted by slightly tweaking the frame, which is the way the factory does it. This is not something that should be attempted by anyone not familiar with the process, and as a result I will not describe how it is done. It is not done by turning the barrel as this affects the position of the locking bolt and barrel lug and can change timing and cause other problems.
First, note the sig-line.
The 130 gr. round nose jacketed ammunition is loaded to Air Force M-41 specifications. It is quite anemic in addition to being light. The only saving grace it has is being relatively cheap.
The first thing to do with a fixed sight revolver, if you want it to shoot to point-of-aim, is to decide what ammunition you want the gun regulated for. There is no way that ammunition using different weight bullets at different velocities will all shoot to the same point.
Most, if not all, of the low issue will be taken care of by using 158 gr. ammunition. The windage may be resolved at the same time. Once you have the gun shooting right for elevation the windage deviation can be handled by a competent gunsmith. There is good reason for the emphasis! Windage is properly adjusted by slightly tweaking the frame, which is the way the factory does it. This is not something that should be attempted by anyone not familiar with the process, and as a result I will not describe how it is done. It is not done by turning the barrel as this affects the position of the locking bolt and barrel lug and can change timing and cause other problems.
