New Chronograph Owner

USMCbrat

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A week ago I was talking with a buddy saying that I would like to see what my hand loads would spec out at with a chronograph. I said that I would not use it a lot so I could not justify the expense. He said that we should go halfers …..so we bought a Beta Chrony. Man….how did I ever reload without it!

Some loads speced out hotter than I thought they would and some were less then I thought.

S&W 629 with an 8 3/8 barrel and a 240 grain LRNFP.

10 grains of Unique = 1245 f/s Average Muzzle Velocity (AMV)

17 grains of 2400 = 1235 f/s AMV
18 grains 2400 = 1293 f/s AMV
19 grains 2400 = 1345 f/s AMV
20 grains 2400 = 1390 f/s AMV

Tomorrow I try the same loads in a 4” Model 29-2. If I knew how much I would like this, I would have done it long ago.
 
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A week ago I was talking with a buddy saying that I would like to see what my hand loads would spec out at with a chronograph. I said that I would not use it a lot so I could not justify the expense. He said that we should go halfers …..so we bought a Beta Chrony. Man….how did I ever reload without it!

Some loads speced out hotter than I thought they would and some were less then I thought.

S&W 629 with an 8 3/8 barrel and a 240 grain LRNFP.

10 grains of Unique = 1245 f/s Average Muzzle Velocity (AMV)

17 grains of 2400 = 1235 f/s AMV
18 grains 2400 = 1293 f/s AMV
19 grains 2400 = 1345 f/s AMV
20 grains 2400 = 1390 f/s AMV

Tomorrow I try the same loads in a 4” Model 29-2. If I knew how much I would like this, I would have done it long ago.
 
The one issue with any chronograph is making sure your bullets are always taking the same path (hopefully straight) through the screens at the same height.
 
Originally posted by thomashoward:

Awesome! I have a couple of the old chronys that used the carboard sides/reflectors. I think I'm gonna make a permanent bucket chrony like that to get some use out of them

Great idea!

Thanks for posting the pics
and yes don't shoot your new chrony

-2sigs
 
Thanks so much for the pictures. Now it makes sense to me. I'm going to copy your design and make up one for my new Chrony.

Well thought out idea.
 
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