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Bought on a 40/65 1874 pedersoli. I'm guessing the markings that go 25 50 75 10 25 50 75 20 25 50 75 30
Signify marks up to 300 yds. Well I got to get a handle on this cause my meek load puts em on zero @ 100 yds with it only set at 30 yds. Argo the rest of my markings aren't worth jack.
Ways to solve? ie is there such thing as a tape with markings I can stick onto staff to correct it?

Those markings do not indicate yards, but MOA, and there is no way to zero the sight. Typically, each mark on the vernier is .010", and it works out to one MOA only if the sight radius is 36". You might be able to calculate sight settings at various distances, but I just shoot and record the settings. Calculated settings might get you close, but there is really no substitute for shooting.

Hope this helps.

Paul

Well ya, but there ain't no .010 tween my marks friend. It's more like .030+

Might help if one furnished a measure from the lowest to highest detents. Then one can do the math.

Kelley's own web site says the elevation shaft is marked in increments of one MOA. Do you know how to read a vernier? Not a put-down, just an honest question.

Did your sight come with instructions?

Paul

It's a VERNIER, and it's laid out like any and ALL vernier scales.

The marks on that staff have NOTHING to do with yardage.

GTC

It's NOT April 1st for 4 months yet, and that is when this should have been posted.

GTC

Try this, and thank Kermit Hoke, maker of one of the finest of these sights.

34 year tool maker can kinda goof by with a real vernier scale
No instructions

OK, so can I read a "mini" vernier scale? Yes and get it fully now

Thank You

Where were you making tools, ...

Uganda ?

GTC

The 36" thing IS the sticking point, and we're lucky enough to have the long barrels / sight radii to work with that we do.

Here's one to write down, if you don't have it on file yet.

Sight radius X .00029 = 1 MOA value in thousandths of an inch.

Semper 40 TPI !

GTC

No in a place Called CDC doing work for Your military so as You could have the freedom to have girly balls that are only tough at a key board.....Thanks for asking though.
Oh BTW, when the scope on one of Your battleships locks and holds target acquisition, no need to thank this dumby from Uganda. Where did You do Your tool making or is Your vernier scale reading isolated to the sports only. Sadly supported, un schooled method of knowledge

Your postings thus far really sounded like your increments of measurement may have been thickness of banana leaf, Mate.

Why don't you just run off and get your hands on a new in the box vintage sight, and ask idiotic questions about how to best screw up it's finish ?

Link: https://www.24hourcampfire.com/ubbth...19/Re_fading_dulling_blueing#Post9443119

....you seem a little bit lost here.

GTC

Ya as lost as You are pig arrogant.

Is Oracle like orifice?

Right,

...just pointing out that the combination of thin skin and a proclivity for asking really DUMB questions, prefaced with digs and aspersions tossed at folks that make sights, and that many of us KNOW personally may see your stick float a little low in some regards.

You are obviously very special, and will no doubt master in weeks what took many of us years to noodle out.

We'll be watching that evolution in awe.

GTC

No need when someone can explain w/out the high post arrogance which seems prevelant on these "Forum",. Interesting word, Forum. Almost make a person think that two way dialogue at any knowledge level would be tolerated. Could it be dicks like You that have people telling me they USED to belong to 24 hr but couldn't tough the know it all babies any longer? Could be coincidence. Sure it will be in Your mind

http://tmtpages.com/vernier.htm As written by a non condisending real man. I got a buck says spelling will be next. We're awaiting with Awe

Oh quit yer' damn sniveling,

.....by way of messing up and distressing bluing jobs, it sounds like you could do it with yer' breath.

GTC

I use a Vernier Caliper and mic when I need a close tolerance. I just don't trust the digital caliper, just to much of a chance putting to much thump pressure on it and getting a false reading.
.

I hear you, Se�or.

....just wish those clamp on magnifying lenses for em' were a bit easier to find.

GTC

Agreed. For quick stuff it don't matter, but when it counts the vernier scale is the way to go. Same with weighing charges. If it's bulk pistol junk, no matter, but if we're going for group size the dump and electronics go away and the pacific balance scale comes out so You can watch it creep up.

Just ignore the other BACKGROUND NOISE on this thread. It's meaningless

With a measure of the distance between extreme detents and sight radius (front to rear), one can work out some accurate and precise data for the sight in question at any desired range. Depending on mounting, one sight of the other could potentially be modified to help with it's effective range issue. Tang or barrel mount for the rear????

Tang with a nice 36" between

Another couple questions just make certain we are absolutely clear: The numbers listed in the original post - are they listed top to bottom or bottom to top of the staff? Last, what is the distance between the lowest and highest detents on ones rear sight?

And to sustain the spirt of this thread, your mother wears combat boots.

What are "detents" and why does it matter? Such sights are marked low to high, so you are at higher numbers as elevation is raised.

Your lowest point is wherever your rifle hits to point of aim, at the nearest distance you shoot. Maximum height is more critical, because it limits the maximum range you can get on to with the sight. That's why most makers offer low, medium, and high vernier sights.

FWIW, my 45-70 can easily get to 1000 yards with my midrange Hoke. I've shot it to 1500 with a long range vernier.

I honestly believe you guys are overthinking this, wanting to measure marks on your sight, and calculating values and movement.

I'm no hot shot or guru, but I've been fairly successful in BPCR competition. I concentrate on knowing my rifle, establishing sight settings empirically, meaning by actual shooting. In matches I establish a prevailing wind zero, then make most of my windage adjustments by feel, believe it or not. You don't have time to screw around with tables and calculations during a match, and you damned sure can't while hunting.

Just get out there and shoot, and keep good notes. Have fun!

Paul

Yours truly on the line. All targets at that match were 1000 to 1540 yards. My long range Hoke. Note extreme windage setting, 44 minutes left to cope with the wind that day. Another shooter with what looks to be an extra tall Kelley sight on a Martini. Note that cheek contact is impossible.

Paul

Paul, your quiet, understated humility is very becoming.

I do think we should all lay low and give the OP a chance to educate us on how this all REALLY works.

"You were right between that ram's legs , come up 3 banana leaves"

man, that last picture (the Martoony) is a HOOT !

GTC

Detent ?

....what's a detent ?

GTC

Hey, you've seen the sights I build and some of the old clanked out veterans that I've rebuilt, Paul.

Whilst in the throes of "overthinking" I'd like to just lay out some real SIMPLE mojo here.

* one takes .150" and divides it into 5 increments (e.g. the "not .010" , more like .030" that our rocket scientist observed)....and lays that out on his fixed scale four times, we have .1.0000"
* one takes his movable scale (the vernier) and lays out five (maybe only four) stadia spaced at .025".
*one than hooks the movable scale / vernier to a 40 TPI lead screw, and VOILA,...

One full rev of the elevation knob gives one .100" ( a "point" ) of travel. That is why one gets so comfortable with crankin' those knobs (and wearing out their lead screws, gibs, and bushings.)

Now that we've got this out of the way, I'd like to say that having spotted for you a time or two, and having had the good fortune of having you spot for me, that you've just gotten to damn GOOD at this.

From here out, in fairness to us pikers and useless noisemakers, I think you should do all of your call outs in Arshins, or Cubits, or something that will get you back to actually thinking about alla' this.

Now GFY.

GTC

Well now I certainly doff my hat to you for your technical knowledge and your ability to build things, and especially to put new life into items that others might relegate to the junk pile or worse. So my comment about overthinking wasn't directed to you. Nor was it intended to discourage anybody from understanding their gear, including planning to acquire it. You really do need to understand how stuff works.

However, as to the actual shooting, that's where I find that you're better off getting a good feel for your equipment, and managing it accordingly. I'm not expressing myself as well as I'd like, but perhaps the analogy is driving a car, or maybe flying a plane. You do need to understand well the reference points, gauges and such, but you don't always have time to think about it.

At a local match last year a fellow had a nice rifle, and what looked to be an elaborate ballistics chart that he kept looking at. I won, and he was well down the list. Whatever.

At a match my basic sight settings for the targets on the course will be on a card taped to my stock. Measurements are stored somewhere deep in my memory bank.

Now, to put this in some perspective, I just relate what works best for me, admitting that I don't multitask well these days. Still, the KISS principle is well suited to shooting these fine old time rifles.

Paul

agreed,....now come up one cubit, and four banana leaves,...

Shade right, and watch the flags.

GTC

Simply put: With a measure of sight plain, a count of the increment markings (or detents) on his sight, and distance between the lowest and topmost marks on that same sight staff; one can do a ratio and proportion calculation and tell the original poster exactly what those values reflect in minutes, inches, miles, millimeters, zopbogs, or whatever units he/she might be interested in. In no way is it a complicated issue.

If the original poster wants to supply a little more ballistic info, we could indeed fabricate a scale on a piece of tape or metal that could be affixed to his staff and he could crank in zeros at any of his desired ranges. It was a simple question with an equally simple solution certainly not worthy of a pissing match.

Like his Pedersoli, my 45-90 has a 100 yd zero at a setting of approximately 31 minutes on its long range staff.

Have good one,