I've been loading the past year for my Uberti Win 73 in 44-40. Bore is 0.429.
Using IMR4198 at 14.7-15 grain with a .430 LRNF of 200g.
Starline brass and win Lg Pistol primers.
Went to an outdoor range yesterday and shot ten of those to check accuracy and to see if my sights needed adjusting. I'd installed a German Silver Rocky Mountain front sight........anyway.....at 25 yrds they were dead on.
Should have taken more for the 100 yrd range but didn't. I did tak a box of 100
205g. 0.428 rnlf over 15 g of Hercules 2400. RP brass, Win. Lg Primers. I had loaded these previously for a Win 92 I used to own and then stupidly sold years ago. That bore was 0.427.
These were all over the place with my 73.
I adjusted my buckhorn up and down.....finally was able to land two hits on the paper but they were a foot apart.
Thought it was my sights or my eyes (not good vision) or the fact I hadn't shot at that distance in years........(indoor range is only 25 yrds)........
I came to the conclusion that my rifle just didn't like that load or that undersized boolit...even though they were just a thousandth under.....and my eyesight needed new glasses.
So my question is: Concerning the boolit........are undersized boolits that inaccurate?
I might add that I am thinking to install a Skinner peep sight in place of the buckhorn and use it as a ghost ring or opening up the small sight gap on the buckhorn. I love this rifle but being period correct isn't necessary if I can't get a good sight picture.
Suggestions?