Rear Sight Range Increments On .54 Investarm Replica

[Cpl. Ashencheeks]

I have a .54 Caliber Investarm Hawken Style Replica that was in the Cabela's line of rifles a couple of decades back.

Back when I first got the rifle, I had been able to use it at 100 yards and I guess it did well, because I was at least in the black on a 25 yard rated paper target at that 100 yard range.

As well as I can remember at the moment, it performed at it's best between 50 and 75 yards.

My eyesight is not the same, so I am not sure how well I might it shoot presently.

This was usually using loads of RS PDX poured from my measure or from a paper wrap at between 85 to 90 grains. Now I am only considering to use only FFG black in this rifle.

The bottom surface of the sight is set a little high upon the center longest hashmark on the side of the rear sight.

I was wondering what the rear sight elevation hashmark increments might be set at on these rifles?

Would it be in meters or yards?

When I got the rifle it performed well straight out of the box, without any real sight adjustment other than just a smidge on the windage adjustment.

 

[necchi]

I don't think they mean anything except a reference mark. I mean I don't think they have a designated distance increment.

 

[Cpl. Ashencheeks]

I don't think they mean anything except a reference mark. I mean I don't think they have a designated distance increment.

I was wondering if that was the case also, but apprehensive to add to the question.

 

[galamb]

Yes, would agree that they are just reference marks.

Never really considered that question before, but thinking now, depending on "what" you are shooting the trajectory could be significantly different (conical like a rainbow, ball fairly flat) even over a relatively short distance.

All of that couldn't be factored into making those hash marks "x" feet or meters away relative to each other.

 

[azmntman]

Mine has no windage adjustment? Also it shot best groups with 55 grains. I did have a (apparently drunk?) tool rich buddy work on it for me. Asked if he could make the rear sight holes slots so I could slid it R/L for windage....got it back with larger holes? I guess Jim Beam had him thinking I could also move it forward or rear? Bought another sight for it but it has been consumed in my "stuff" for years and has yet to resurface. When it does I shall create my own slots and site it in. Shoots right about 4-5 inch at 90 yds but a good 3-4 inch group is easy. Move that site all the way up and one shoots at about 35 degrees! Talk about needing to know exact yardage! I doubt at that site range you could hit ANYTHING. Maybe good for lobbing into a yank or reb camp is about all I would guess.

 

[Rifleman1776]

I don't think they mean anything except a reference mark. I mean I don't think they have a designated distance increment.

Most sights are designed to adjust to specific increments on the POI. But, repeat but with modern rifles and the sights set a certain distance apart. e.g. 20" or thereabouts. When you put them on a longer barrel the mathematics change as much as the ballistics. All of which means, we can't help you. Only you can determine where the POI will be at 100 yards. Do bench shooting, using sacred real black powder, at 50 yards. When you get a good center group, leave the sights alone and start shooting at 100 yards with the same hold. If your POI is six inches low, you then know to 'kentucky' hold about six inches higher on bambi. If you are competing for the 'X's then more bench work is needed to find how many clicks you have to crank up that sight for 100 yards. Be advised, some sights won't crank enough to put you on center. They were made for 24" 30-06 barrels, not 42" ml barrels.

 

[jamesthomas]

What's RS PDX?

 

[azmntman]

2f pyrodex