Shooting High

Discussion in 'Percussion Rifles' started by deermanct, Jul 14, 2019.

Help Support Muzzle Loading Forum by donating:

  1. Jul 16, 2019 #21

    Stantheman86

    Stantheman86

    Stantheman86

    32 Cal. MLF Supporter

    Joined:
    Jul 24, 2018
    Messages:
    645
    Likes Received:
    141
    35 yards?

    That's handgun range, the sights are likely regulated for a "recommended " charge at 100 yards. At 35 the ball is still rising.
     
    Poboy and Britsmoothy like this.
  2. Jul 16, 2019 #22

    Grenadier1758

    Grenadier1758

    Grenadier1758

    58 Cal.

    Joined:
    Oct 9, 2004
    Messages:
    3,369
    Likes Received:
    454
    Location:
    St. Louis, MO
    With a 32 caliber Crocket, 35 yards is maximum squirrel hunting range. The trajectory should be intended to be nearly flat to 35 yards. The initial load of 35 grains of black powder will result in the rising trajectory and impact will be too high. A suitable load for squirrel hunting should be in the 10 to 15 grains of 3 fg. That should change the trajectory through 35 yards to make a better decision on how to adjust the sights.
     
    Captjoel likes this.
  3. Jul 16, 2019 #23

    45man

    45man

    45man

    32 Cal. MLF Supporter

    Joined:
    Feb 25, 2004
    Messages:
    327
    Likes Received:
    93
    True that not much is needed for small game but 10 gr is very light. Slower means more time a ball spends in the barrel and even with low recoil there is still barrel rise so the ball leaves near the top of rise.
    The formula given is what I use. You can measure from anywhere once you use the formula, even from the bottom of the barrel and add that much to the sight, soft solder works fine to hold some stock to the top of the sight, then file to match.
     
  4. Jul 16, 2019 #24

    bang

    bang

    bang

    40 Cal

    Joined:
    Jan 2, 2011
    Messages:
    450
    Likes Received:
    123
    I'm pretty sure barrel rise happens at recoil which is when projectile has cleared the muzzle.
     
  5. Jul 16, 2019 #25

    Britsmoothy

    Britsmoothy

    Britsmoothy

    70 Cal.

    Joined:
    Feb 28, 2007
    Messages:
    5,469
    Likes Received:
    703
    Location:
    England.
    Entirely yes, fractionally no. There is some possibly while the ball is in the barrel.
     
  6. Jul 16, 2019 #26

    SDSmlf

    SDSmlf

    SDSmlf

    40 Cal.

    Joined:
    Nov 4, 2006
    Messages:
    817
    Likes Received:
    274
    Location:
    Western North Carolina
    Really find no sight adjustments required at 35 yards with my 32 Pedersoli flint with powder charges between 12 and 30 grains of fff. Now, take it to 100 yards, different story, but we are talking squirrel distances here.
     
  7. Jul 16, 2019 #27

    azmntman

    azmntman

    azmntman

    75 Cal.

    Joined:
    Nov 18, 2013
    Messages:
    6,469
    Likes Received:
    321
    Location:
    Northern AZ
    True that not much is needed for small game but 10 gr is very light

    Please shoot a squirrel in the head with 10 grains before you decide. It is like a .22 mag
     
  8. Jul 16, 2019 #28

    hanshi

    hanshi

    hanshi

    Cannon

    Joined:
    May 7, 2009
    Messages:
    9,082
    Likes Received:
    293
    As for the front sight being replaced, take a steel carpenter's tape measure, measure the dovetail and order that approximate size front sight. To install it you'll have to file a bit on the sight base until it goes in snugly. NEVER file the dovetail; ONLY file the sight base. I've ordered correct front sights before and they are always slightly oversize. You can remove material but you can't add it on.
     
  9. Jul 16, 2019 #29

    SDSmlf

    SDSmlf

    SDSmlf

    40 Cal.

    Joined:
    Nov 4, 2006
    Messages:
    817
    Likes Received:
    274
    Location:
    Western North Carolina
    45man, believe when I chronographed my 12 grain fff Swiss load I was at or just over 1000 FPS. That puts the 45 grain RB at about 850 FPS with over 70 foot pounds of energy at 35 yards. Wouldn’t call that ‘light’ for the tree rats I have seen. Just how big do they grow in your neck of the woods?
     
    Poboy likes this.
  10. Jul 17, 2019 #30

    45man

    45man

    45man

    32 Cal. MLF Supporter

    Joined:
    Feb 25, 2004
    Messages:
    327
    Likes Received:
    93
    That is fine for tree rats but it is only barrel rise before the ball exits. Recoil starts at ignition when the ball is pushed. You are in the zone so just work with sights.
    What I meant about "Light" was the time for the ball to exit. Slow or a heavy bullet always will go high. Add to the front sight. You are just fine but open fixed sights will always be a pain.
     
  11. Jul 17, 2019 #31

    SDSmlf

    SDSmlf

    SDSmlf

    40 Cal.

    Joined:
    Nov 4, 2006
    Messages:
    817
    Likes Received:
    274
    Location:
    Western North Carolina
    Have observed point of impact changing vertically because of bore time and muzzle rise with handguns, say at 50 or a 100 yards, but don’t see it much, if at all in long guns. I know if I shoot a light pistol target load (light bullet, light powder charge) it will impact higher out to a certain distance than a heavier bullet over a heavier powder charge (call it a magnum load) fired from the same pistol. Vertical variation can be 6 to 12 inches.

    My 12 grain 32 caliber load is no more than one inch high or low out to 50 yards. A 30 grain load in the same gun reduces it to something less than a half inch high or low out to 50 yards and requires no sight adjustment from lighter load.
     
  12. Jul 17, 2019 #32

    45man

    45man

    45man

    32 Cal. MLF Supporter

    Joined:
    Feb 25, 2004
    Messages:
    327
    Likes Received:
    93
    Same in a rifle even if you do not notice. It is only a few thousandths of an inch at the sights. We can't see that good either.
     
  13. Jul 18, 2019 #33

    Larry (Omaha)

    Larry (Omaha)

    Larry (Omaha)

    45 Cal. MLF Supporter

    Joined:
    Aug 28, 2004
    Messages:
    601
    Likes Received:
    82
    You have lots of information so far. In my opinion, start with a lower powder charge to see if you still maintain a good group. 2nd would be your choice.......front sight up, or back sight down, depending on your skills and or which sight you like the least. If you decide to modify either sight, make sure you calculate how much first. This hyperlink does all the math for you. Just fill in the data.
    https://dillonprecision.net/sight-correction-calculator/
    Flintlocklar:)
     
  14. Jul 21, 2019 #34

    The Crisco Kid

    The Crisco Kid

    The Crisco Kid

    36 Cl. MLF Supporter

    Joined:
    Dec 24, 2013
    Messages:
    76
    Likes Received:
    34
    Location:
    Alaska and Arizona
    Whatever you decide to do I'd suggest you figure out the load that shoots best first. It doesn't matter where it hits on the paper, you're looking for the best group at the velocity you want. If you change your sights before you figure out your load you may have to change your sights again. I'll bet I'm not the only one here who knows this is true!
     

Share This Page

arrow_white