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ROA Shoots High

This is a discussion on ROA Shoots High within the Black Powder forums, part of the Firearm Forum category; Yup. I've heard comments about the front sight before. Today I fired my ROA for the first time. It hits about three inches high at ...


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Old December 26th, 2016, 10:40 PM   #1
 
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ROA Shoots High

Yup. I've heard comments about the front sight before.

Today I fired my ROA for the first time. It hits about three inches high at 15 yards with the rear sight screwed all the way down as low as it will go.

For general info- It's a blued 7" barrel made in 1996. I loaded 30 grains of Pyrodex with a Wonder Wad under a .457 Hornady ball, and used a CCI #10 cap.

Accuracy seemed pretty good with my first group about 6" and they shrank down to about 3" as I got a little accustomed to the gun.

My thought is to file a little off the top of the rear sight... but everybody seems to want to add to the front. My front sight looks to be a one piece affair and no screws are visible. I suspect it's soldered on.

What do you guys think? Anybody got an easy answer? Does anybody know of rear sight blades made to different sizes to fix this?




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Old December 26th, 2016, 10:44 PM   #2
 
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Here's the pistol in question



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Old December 26th, 2016, 10:51 PM   #3
 
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What if I grind a little off the bottom of the rear sight so it sits lower on the gun? Has anybody tried that?
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Old December 27th, 2016, 04:52 AM   #4
 
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That type of site should have a screw or it's a slide and lock. Call ruger they should tell you how to take off.

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Old December 27th, 2016, 06:26 AM   #5
 
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ROA

I strongly suggest that you spend more time shooting the ROA...before you start grinding away at the sights.
When you change powder loads....and try other powders....777 or real black...your POI will also change...

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Old December 27th, 2016, 07:10 AM   #6
 
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Quote:
Originally Posted by roashooter View Post
I strongly suggest that you spend more time shooting the ROA...before you start grinding away at the sights.
When you change powder loads....and try other powders....777 or real black...your POI will also change...
I loaded 40 grains of 777 for one cylinder full.
I didnt measure to see exactly if it printed differently, but it still shot high.

Are you saying you have found a load that makes yours shoot to point of aim?

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Old December 27th, 2016, 07:13 AM   #7
 
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Quote:
Originally Posted by roashooter View Post
I strongly suggest that you spend more time shooting the ROA...before you start grinding away at the sights.
When you change powder loads....and try other powders....777 or real black...your POI will also change...
Yes to this.

Sources say the original 19th CnB revolvers were regulated to shoot POA out around 25-50 yds. I usually shoot my 1975-vintage ROA at 25 yds, and it shoots to POA. I do notice the rear sight has a rather low blade, compared with my newer DA Ruger revolvers. You should remove the rear sight and thoroughly clean it and the recess in the frame. Those Ruger rear sights can get debris under them, and/or the tension coil springs can get messed up, both of which will limit the sight's downward travel.
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Old December 27th, 2016, 10:10 AM   #8
 
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I looked around on the net to see if anybody offered a rear sight blade that would help. Nothing found.
I did find a genuine Ruger replacement rear sight... The add claimed that blackhawks, single sixes, gp100s, and everything else uses that same sight.

If your blade looks smaller it might be that somebody did what I'm thinking about doing.

This is a nice pistol. I dont see why it cant shoot to point of aim.

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Old December 27th, 2016, 10:13 AM   #9
 
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I did remove the sight. Everything looked good under there.

There isn't room to file off the bottom because the windage screw is mounted very low in the body of that sight.

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Old December 27th, 2016, 12:35 PM   #10
 
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mine always shot high with 20-3- grains and right on with a full load slightly compressed. Mine also likes a compressed load of 4 f instead of 3 f.
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Old December 27th, 2016, 07:29 PM   #11
 
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I have question I have a 50 cal TC hawken what is the best powder to use. Be side black powder. It hard to find.

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Old December 27th, 2016, 11:38 PM   #12
 
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Originally Posted by bwinters View Post
mine always shot high with 20-3- grains and right on with a full load slightly compressed. Mine also likes a compressed load of 4 f instead of 3 f.
Good point, there. The ROA has generously sized chambers and a relatively short rammer stroke. If your powder load is small enough that you can't get good compression on it, the use of a filler, such as corn meal or cream of wheat, between the powder and ball can help.
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Old December 28th, 2016, 11:32 PM   #13
 
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There are two guys here suggesting that different loads will change my point of impact. I will test this theory. I have seen different loads do this before in guns like my Single Seven. That pistol shoots five different loads from .32 S&W Short up to .327 Federal Magnum and goes from 700 fps to 1500 fps. The difference in the point of impact with one load being more than twice as fast as another, however, is not enough to solve this shooting high issue. I have limited faith that changing loads will fix this...

All over the internet there are people saying that no matter what load is used all 7" barreled ROA pistols shoot high.

Lots of folks are saying that Ruger was aware of this issue and would ship out a taller front sight for the guns with replaceable blades and that was supposed to fix the issue.

Then there's THIS GUY-

ROA is shooting about a foot high. - The Firing Line Forums

He seems to feel that filing the rear sight is the answer...

I have not decided to do anything yet, but I remain dedicated to making this fine old pistol shoot right. I will update this thread as I go.

Last edited by Fast Frank; December 28th, 2016 at 11:43 PM.
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Old December 29th, 2016, 12:20 AM   #14
 
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Two questions: what size target bull are you using, and: what hold are you using with the sights?

I use 25 yd slow fire pistol target bulls at 25 yds and a 6 'o clock hold on the bull. My main load is around 35 grs (by volume) of 3F Triple Se7en powder. With that, I get my shots in the black. Like I said before, the rear sight blade on my 1975-vintage ROA is lower (and plain black) than my stock GP100 and Redhawk sight blades.

If your ROA is high at 15 yds, I'd like to see some results at 25 and 50 yds.

Note: With virtually all handguns, if it is sighted in with heavier loads, it will shoot lower with lighter loads. If sighted in with light loads, it will shoot higher with heavier loads.
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Old December 29th, 2016, 09:01 PM   #15
 
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Quote:
Originally Posted by firescout View Post
Two questions: what size target bull are you using, and: what hold are you using with the sights?

I use 25 yd slow fire pistol target bulls at 25 yds and a 6 'o clock hold on the bull. My main load is around 35 grs (by volume) of 3F Triple Se7en powder. With that, I get my shots in the black. Like I said before, the rear sight blade on my 1975-vintage ROA is lower (and plain black) than my stock GP100 and Redhawk sight blades.

If your ROA is high at 15 yds, I'd like to see some results at 25 and 50 yds.

Note: With virtually all handguns, if it is sighted in with heavier loads, it will shoot lower with lighter loads. If sighted in with light loads, it will shoot higher with heavier loads.
Interesting.

O.K., The targets I was shooting at were 100 yard rifle sight in targets.

They had five little targets on one big sheet of paper. Each target was about six inches across, and had a one inch bull in the center.

I align the sights just like I align the sights on all my other pistols, and all the pistols I have been shooting for the past 50 years or so- with the top edge of the front sight centered in the slot of the rear sight and the tops of both sights level.

I expect the bullet to hit at least near the place where the center of the top of the front sight was when the trigger released.

I have more than a few other guns here that do exactly that.

This one, however, puts a bullet hole several inches above the point of aim.

It stands to reason that the amount the ball hits the target above the point of aim will get worse as distances increase. We all know that a rifle bullet one inch from the point of aim at 25 yards will be two inches off at 50 and four inches off at 100. This is the way we adjust scopes. Naturally, the cap and ball pistol will have a pronounced arch to it's trajectory and things will come back into alignment somewhere down range, and probably not a hundred yards out.

This doesn't have anything to do with the fact that I want to adjust my sights so that the pistol shoots to the point of aim with the load I'm shooting at the distance I choose. All my other guns can do that, and I want this one to do it too.

Sure, I can learn to compensate for the amount the sights are off and make the ball go where I want it to go anyway- That's the very essence of shooting.

But I prefer to at least start with the sights set correctly and these are not capable of that.

Last edited by Fast Frank; December 29th, 2016 at 09:14 PM.
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