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Double Rifles, Single Shots & Combinations >> Building Double Rifles & Gunsmithing

Tom_H
.333 member

Reged: 13/04/05
Posts: 336
Loc: Southeast, NY

Re: 20 ga regulation success
10/06/15 08:05 PM

When I had the original barrel cut the plan was to match it to factory cases for cast slug shooting (ball/conical). The plastic case ID was something around .625 and I opted for .005 rifling. When I tested the Brenekees, 50 yard accuracy was literally the size of a slug hole. Unfortunately the 2.75 slugs went subsonic and at 100 the group was upwards of 7".
Moved over to the 3" and things improved. The only more accurate slug was the Lightfield, but I have a big supply of the former so that is the one I regulated to.
I do have Ellis Brown's book and it is very helpful. The chart is from the Brownells catalog. It helps with sight heights and is here https://www.brownells.com/.aspx/lid=13093/GunTechdetail/Sight_Correction_Calculator

It did work just like adjusting sights; at least this time.

CC, really like the black locktite fix. I was considering duct tape and posting pix...

--------------------
Carbonation without fermentation is tyranny

Post Extras

Entire topic
Subject	Posted by	Posted on
20 ga regulation success	Tom_H	08/06/15 09:57 AM
Re: 20 ga regulation success	Birdhunter50	08/06/15 09:45 PM
Re: 20 ga regulation success	Tom_H	09/06/15 09:32 AM
Re: 20 ga regulation success	Birdhunter50	09/06/15 11:50 PM
Re: 20 ga regulation success	CommandCar	10/06/15 10:22 AM
Re: 20 ga regulation success	Tom_H	10/06/15 08:05 PM
Re: 20 ga regulation success	Tom_H	18/06/15 10:22 AM
Re: 20 ga regulation success	Tom_H	10/07/15 03:11 AM
Re: 20 ga regulation success	Iowa_303s	10/07/15 10:54 AM
Re: 20 ga regulation success	DarylS	10/07/15 03:08 PM
Re: 20 ga regulation success	Tom_H	22/07/15 05:16 AM
Re: 20 ga regulation success	DarylS	23/07/15 01:50 AM
Re: 20 ga regulation success	Tom_H	23/07/15 07:09 AM
Re: 20 ga regulation success	DarylS	23/07/15 08:32 AM
Re: 20 ga regulation success	Tom_H	23/07/15 11:28 AM
Re: 20 ga regulation success	DarylS	23/07/15 11:33 AM
Re: 20 ga regulation success	Iowa_303s	08/06/15 11:25 AM
Re: 20 ga regulation success	Tom_H	08/06/15 11:40 AM
Re: 20 ga regulation success	tinker	08/06/15 02:20 PM

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