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ballistic chronograph
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rstofer:

--- Quote from: tautech on February 03, 2020, 09:49:09 pm ---Good luck with the youngen and teach him well as precision field shooting requires much time at the bench first to learn the art. For heavens sake don't expose him to too much recoil before he is ready to handle it or it will only teach him to flinch.......a habit that I couldn't break until I got an accurate 223.

--- End quote ---

The young one (now 21) shoots well.  He takes all the money at the monthly Military Bench Rest competitions using my M1A SuperMatch (.308).  These matches use reduced scale 600 yard targets shot at 100 and 200 yards.  Still, it takes a pretty tight group to max the course.  There is another fellow, a former Army Marksmanship Unit shooter who can outshoot him when he shows up but that's about it.  I shoot a battle grade M1A so there's not much competition between us.  I get to pay the entry fees, he keeps all the winnings!  There's something wrong with that picture.

Yes, I've taught him well.  His favorite handgun in my Sig 1911 in .45 ACP and he shoots it very well.  Good eyesight and no 'quivers' is a real plus.

Off and on, we've been shooting together since he was 10 and we still enjoy a day of shooting .22 LR at very small silhouettes at 50 yards.  I like shooting the small bore rifles.   Everything is much more relaxed on the rimfire range.

tautech:
 :)
A buddy shoots Mil comps too and turned up at one a year or two back with his .222 Sako Vixen and of course cleaned them all up despite the howls of protest that a Sako Vixen wasn't a mil grade weapon. When he produced proof that they were once issued to some IIRC African nation there was nothing they could do but change the rules to exclude him from their next comp.  :-DD
edy:
And here I am wanting to build a chrony for my .177 pellet gun (Ruger Air Hawk with scope)....  :-DD

I may be better off making a pendulum. Cheap and probably come close, just have to figure out a way to mark the height reliably without introducing too much resistance. Something like this may be do the trick (and just record it with a camera):

rstofer:

--- Quote from: tautech on February 03, 2020, 11:21:38 pm --- :)
A buddy shoots Mil comps too and turned up at one a year or two back with his .222 Sako Vixen and of course cleaned them all up despite the howls of protest that a Sako Vixen wasn't a mil grade weapon. When he produced proof that they were once issued to some IIRC African nation there was nothing they could do but change the rules to exclude him from their next comp.  :-DD

--- End quote ---

One military style match around here wants weapons up through WWII only.  The M1 Garand is in, the M14 (actually, it's derivative, the M1A) is out.  Officially...  It turns out that the M1A shooters are required if they want to fill up the firing line.  So we get to shoot!  Scored separately...

One of the other matches has a similar rule about  "issued" rifles.  One day I'm going to show up with my Steyr SSG - they are used all over the world for police and military.  Not all that common but it shoots a dime group at 200m right out of the box.  My kind of rifle!

rstofer:

--- Quote from: edy on February 04, 2020, 12:16:27 am ---And here I am wanting to build a chrony for my .177 pellet gun (Ruger Air Hawk with scope)....  :-DD

I may be better off making a pendulum. Cheap and probably come close, just have to figure out a way to mark the height reliably without introducing too much resistance. Something like this may be do the trick (and just record it with a camera):

--- End quote ---

Is a cell phone video fast enough?  Some Androids will go to 240 fps.

 I might put a potentiometer at the pivot and do a little peak capture of the resulting voltage.  Maybe an optical encoder,,,

You might Google for 'pellet rifle chronograph'  There are quite a few projects, complete with videos.  It's been done!

https://hackaday.io/project/9378-diy-ballistic-chronograph
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