That IS encouraging!

Whatever you (and the rifle) "did" at #1, you managed to do it twice.   

There are different models of the 1902 leaf, 3, maybe 4.  They vary as to the amount of adjustment a single "notch" makes.  When you get down to the really fine ones, a single notch is hard to feel.  Parashooter can describe the differing leafs better than I can, as he once did on Culvers.  Got some nice illustrative pics IRC.

This table would be applicable to the second one down in BRs pic and would also apply to the yardage marks on others, which also have some variety in marks.

'bote':

Re. elevation and sights:
In my experience, it is not unusual for a lot of smaller than .43" caliber military rifles to 'shoot lower groups' at 50 yards than at 100 yards, with the same sight setting.

I think it is the sight-angle/related to the line of bore. The bore is angled a bit 'upward' and bullet trajectory is relatively flat at 'close' range. (Significant bullet drop has not occurred yet).

Probably, the best practice is to shoot at 50, 100, 200, and 300 yards and note the rear-sight setting in a 'score book'. Gauges could be made from metal or thick plastic (and distances marked) to check and confirm correct rear-sight setting, during a Match.

FWIW - Most military sights were not designed for 'paper bulls-eye' shooting. Primary intent was to hit a man-size target from point-blank to 400 yards by aiming at his gut and not fussing with sights. We just like to do better and compete.

Re. "one point":
I believe this refers to the 'windage' graduation-markings on the sight base.

Re. photographs:
Most of us take our own of guns, parts, items, or literature in our collections.

(I probably post too many, but, I am a visual person and find it easier to explain with pictures than with words).

FWIW, At 200 yards and shooting the standard load of 220 gr RN over 40.0 grains of 4350, my elevation is set at the 225 point on my 1902 sight.  Now whether this has to do with my use of the (modified) Sgt. Peep or not remains to be seen... but it does ok.  I also use a little "Kentucky Windage" in my shooting - in that I get it as close as possible, and then if I'm not deadnutz center, I adjust my sight picture to compensate.  It's just easier for me than fooling around with the sight adjustment during a match.  This may affect my ability to medal... but at least I'm not frustrated WHILE I'm shooting (I just save the frustration for after when I see my score, LOL).

To expand on what Chuck said, always remember that the actually trajectory of the bullet, which is of course NEVER "flat", intersects the perfectly straight line of sight TWICE - once (rising) at about 25 yds, then falling (at a steeper rate) somewhere down-range.

Thanks for the book tips.  Love old reference books. 

Looks like the Roosevelt Match is on the schedule for the last day at Perry in 2017.  Looks like it is set up like the JCG matches.  I'm trying to figure a way to go but it's a long drive from western KY and they tend to spread out the matches.  I normally shoot my NM Garand in local matches but have lately shot the JCG and vintage sniper at Talladega.