A Handy Tool For Those Without a Chrono

Reloading equipment, methods, load data, powder and projectile information.

A Handy Tool For Those Without a Chrono

Post by Gaznazdiak » 21 Nov 2018, 10:20 pm

For those like me, without all the flash testing jiggery-pokery, a handy resource for calculating muzzel velocity.

With calculation presets for:

6.5 Grendel
.223
.243
308
.357 Magnum
.45 Auto

http://shootersnotes.com/calculator/velocity-estimator/
:drinks:
Last edited by Gaznazdiak on 01 Jan 2019, 3:57 pm, edited 1 time in total.
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Re: Interesting Tool

Post by Stix » 21 Nov 2018, 10:23 pm

Thst'd be right...ive got none of those cartridges...!!!

OMG...thats really sad eh...!! :oops: :lol:
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Re: Interesting Tool

Post by duncan61 » 21 Nov 2018, 10:39 pm

just did the .243
.22 winchester .22hornet .222 .243 7mm rem mag cbc 12g
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Re: Interesting Tool

Post by Gaznazdiak » 21 Nov 2018, 11:12 pm

Stix wrote:Thst'd be right...ive got none of those cartridges...!!!

OMG...thats really sad eh...!! :oops: :lol:


Sad be buggered Stix, it's a tailor made reason to get at least one of them.
Glass half full mate. :thumbsup:
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Re: A Handy Tool For Those Without a Chrono

Post by Gaznazdiak » 01 Jan 2019, 3:59 pm

Is anyone with a chrono willing to test the accuracy of this tool for those of us who don't?

I'd be interested in how close their algorithms come to reality.
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Re: A Handy Tool For Those Without a Chrono

Post by marksman » 01 Jan 2019, 4:37 pm

sure :thumbsup: :drinks:

I can do the 308 next time I'm out :thumbsup:
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Re: A Handy Tool For Those Without a Chrono

Post by Gaznazdiak » 01 Jan 2019, 5:32 pm

Thanks Marksman.
It would be handy to know.
Happy New Year to you.

And the rest of you too.
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Re: A Handy Tool For Those Without a Chrono

Post by marksman » 01 Jan 2019, 6:47 pm

so after putting in existing data I already have the velocity estimator said 2839fps and my actual chronograph velocity is 2834fps

I would say close enough :drinks:
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Re: A Handy Tool For Those Without a Chrono

Post by Gaznazdiak » 01 Jan 2019, 7:56 pm

Well done!
Thanks for that :thumbsup:
:drinks:
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Re: A Handy Tool For Those Without a Chrono

Post by Chappo » 01 Jan 2019, 8:16 pm

Maybe the chrono needs calibrating marksman.
;)
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Re: A Handy Tool For Those Without a Chrono

Post by marksman » 02 Jan 2019, 5:38 am

Chappo wrote:Maybe the chrono needs calibrating marksman.
;)


maybe :drinks:
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Re: A Handy Tool For Those Without a Chrono

Post by Barrettmr » 02 Jan 2019, 6:27 am

I tried using a 223 load that has been tested and it estimated about 50fps faster and placed a warning that the load was massively over pressured. Load is 25 gr 2206h on a 55 gr soft point... Still the speed is about the same.
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Re: A Handy Tool For Those Without a Chrono

Post by marksman » 02 Jan 2019, 6:42 pm

Barrettmr wrote:I tried using a 223 load that has been tested and it estimated about 50fps faster and placed a warning that the load was massively over pressured. Load is 25 gr 2206h on a 55 gr soft point... Still the speed is about the same.


these types of programs can never be 100% accurate as the burn rate of the powder can change from batch to batch
also you have to find the internal volume by weighing the water in a fired in that chamber case for the program
it seemed close enough for me for those who dont have a chronograph to be able to get some ballistics for drop at distance :drinks:
but you still need to real world test the drops at distance even with a chronograph reading :thumbsup:
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Re: A Handy Tool For Those Without a Chrono

Post by SCJ429 » 02 Jan 2019, 7:13 pm

Barrettmr wrote:I tried using a 223 load that has been tested and it estimated about 50fps faster and placed a warning that the load was massively over pressured. Load is 25 gr 2206h on a 55 gr soft point... Still the speed is about the same.


I got the same warning for a 243, with a 107 grain bullet using Retumbo, 51 grains was good for 3580 fps. I can only get a bit over 3200. Perhaps I messed it up.
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