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Double Rifles, Single Shots & Combinations >> Paradox and Bore Guns

tinker
.416 member

Reged: 12/03/05
Posts: 4835
Loc: Nevada

Re: Purdey 20b SxS Rifle, Pinfire
17/09/08 12:47 PM

Daryl-

Using this Round Ball Ballistics Calculator, I've found that with this rifle's combination of factors and an assumption of 1250fpsMV, with the sights (front sight measured, program appropriately adjusted) for a 50yd zero the POI should be .7" above the POA

Taking the vertical center of the group above and drawing a line across the card, my caliper reads .750" from the bottom edge of the card to said center-line.

It's good you made that comment, I wouldn't likely have bothered with running the trajectory map.
For what it's worth, (taking the distance from target and that position in flight via trajectory math) the group is just about dead nuts on vertical center to the 50yd leaf's POA!

Curl-

Thanks for the note.
I'm happy with the accuracy print from today's test-drive.
I wasn't going for record results.
Having only a little time to run the rifle and get back to collect my daughter from school, I call this a great success. The components all worked well together, the results were consistent, and the overall performance of the ammunition (handling, loading, extraction...) was better than I could ask for.

And I have to agree with you, the rifle has definitely found the most perfectly ideal home!!

--Tinker

--------------------
--Self-Appointed Colonel, DRSS--

"It IS a dangerous game, and so named for a reason, and you can't play from the keyboard. " --Some Old Texan...

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Subject	Posted by	Posted on
Purdey 20b SxS Rifle, Pinfire	tinker	27/08/08 09:25 AM
Re: Purdey 20b SxS Rifle, Pinfire	1980E26	27/08/08 11:08 AM
Re: Purdey 20b SxS Rifle, Pinfire	tinker	27/08/08 12:25 PM
Re: Purdey 20b SxS Rifle, Pinfire	mehulkamdar	29/08/08 05:45 AM
Re: Purdey 20b SxS Rifle, Pinfire	tinker	29/08/08 04:19 PM
Re: Purdey 20b SxS Rifle, Pinfire	tinker	29/08/08 04:30 PM
Re: Purdey 20b SxS Rifle, Pinfire	tinker	29/08/08 04:48 PM
Re: Purdey 20b SxS Rifle, Pinfire	tinker	29/08/08 04:58 PM
Re: Purdey 20b SxS Rifle, Pinfire	tinker	29/08/08 05:06 PM
Re: Purdey 20b SxS Rifle, Pinfire	tinker	29/08/08 05:27 PM
Re: Purdey 20b SxS Rifle, Pinfire	tinker	29/08/08 05:40 PM
Re: Purdey 20b SxS Rifle, Pinfire	tinker	29/08/08 05:48 PM
Re: Purdey 20b SxS Rifle, Pinfire	peter	29/08/08 09:40 PM
Re: Purdey 20b SxS Rifle, Pinfire	tinker	30/08/08 03:34 AM
Re: Purdey 20b SxS Rifle, Pinfire	Sarg	30/08/08 08:15 AM
Re: Purdey 20b SxS Rifle, Pinfire	tinker	30/08/08 10:33 AM
Re: Purdey 20b SxS Rifle, Pinfire	mehulkamdar	31/08/08 03:54 AM
Re: Purdey 20b SxS Rifle, Pinfire	lancaster	31/08/08 07:38 PM
Re: Purdey 20b SxS Rifle, Pinfire	tinker	01/09/08 03:11 AM
Re: Purdey 20b SxS Rifle, Pinfire	tinker	02/09/08 03:38 AM
Re: Purdey 20b SxS Rifle, Pinfire	bpesteve	02/09/08 11:42 PM
Re: Purdey 20b SxS Rifle, Pinfire	tinker	03/09/08 03:39 AM
Re: Purdey 20b SxS Rifle, Pinfire	88MauSporter	08/09/08 07:22 AM
Re: Purdey 20b SxS Rifle, Pinfire	tinker	08/09/08 08:03 AM
Re: Purdey 20b SxS Rifle, Pinfire	tinker	17/09/08 08:34 AM
Re: Purdey 20b SxS Rifle, Pinfire	DarylS	17/09/08 10:08 AM
Re: Purdey 20b SxS Rifle, Pinfire	tinker	17/09/08 10:33 AM
Re: Purdey 20b SxS Rifle, Pinfire	CptCurl	17/09/08 10:55 AM
Re: Purdey 20b SxS Rifle, Pinfire	tinker	17/09/08 12:47 PM
Re: Purdey 20b SxS Rifle, Pinfire	peter	17/09/08 10:08 PM
Re: Purdey 20b SxS Rifle, Pinfire	DarylS	18/09/08 02:21 AM
Re: Purdey 20b SxS Rifle, Pinfire	tinker	19/09/08 02:33 AM
Re: Purdey 20b SxS Rifle, Pinfire	tinker	02/10/08 07:29 AM
Re: Purdey 20b SxS Rifle, Pinfire	CptCurl	07/10/08 05:02 AM
Re: Purdey 20b SxS Rifle, Pinfire	tinker	20/11/08 05:12 PM
Re: Purdey 20b SxS Rifle, Pinfire	DarylS	21/11/08 03:00 AM
Re: Purdey 20b SxS Rifle, Pinfire	88MauSporter	21/11/08 03:42 AM
Re: Purdey 20b SxS Rifle, Pinfire	tinker	21/11/08 04:02 AM
Re: Purdey 20b SxS Rifle, Pinfire	DarylS	22/11/08 01:43 AM
Re: Purdey 20b SxS Rifle, Pinfire	93x64mm	19/10/14 09:19 AM
Re: Purdey 20b SxS Rifle, Pinfire	DarylS	19/10/14 01:23 PM
Re: Purdey 20b SxS Rifle, Pinfire	tinker	19/10/14 01:41 PM
Re: Purdey 20b SxS Rifle, Pinfire	bpesteve	03/09/08 04:16 AM
Re: Purdey 20b SxS Rifle, Pinfire	tinker	06/09/08 07:37 PM
Re: Purdey 20b SxS Rifle, Pinfire	bpesteve	07/09/08 12:00 AM
Re: Purdey 20b SxS Rifle, Pinfire	tinker	07/09/08 02:07 AM
Re: Purdey 20b SxS Rifle, Pinfire	bpesteve	07/09/08 02:46 AM
Re: Purdey 20b SxS Rifle, Pinfire	DarylS	07/09/08 08:20 AM
Re: Purdey 20b SxS Rifle, Pinfire	DarylS	07/09/08 01:21 AM
Re: Purdey 20b SxS Rifle, Pinfire	tinker	07/09/08 02:09 AM
Re: Purdey 20b SxS Rifle, Pinfire	tinker	04/09/08 09:17 AM
Re: Purdey 20b SxS Rifle, Pinfire	88MauSporter	28/08/08 11:19 AM
Re: Purdey 20b SxS Rifle, Pinfire	CptCurl	28/08/08 08:46 PM
Re: Purdey 20b SxS Rifle, Pinfire	Sarg	27/08/08 10:47 AM

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