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Double Rifles, Single Shots & Combinations >> Single Shots & Combination Guns

Well_Well_Well
.333 member

Reged: 03/01/07
Posts: 305
Loc: Australia

Re: A little range time with the drilling.
13/02/15 06:04 PM

On most drillings, particularly drillings of some age, the bottom barrel is soldered to the upper barrels. thus produces the same thermal expansion as with double rifles.

In this case, the expansion will be show on target as a rise in impact, as you have experienced. When it has reached a stable temperature, shots will again group together.

It is a point inherent in soldered drillings and is only solved by free floating the barrels, securing them only at a couple of points to maintain consistent regulation. This allows more rapid cooling, so consistency is improved.

The krieghoff ultra (?) and blaser BD14 are examples.

Post Extras

Entire topic
Subject	Posted by	Posted on
A little range time with the drilling.	mart	13/02/15 03:57 AM
Re: A little range time with the drilling.	Waidmannsheil	13/02/15 06:19 AM
Re: A little range time with the drilling.	mart	13/02/15 02:25 PM
Re: A little range time with the drilling.	NitroX	13/02/15 03:01 PM
Re: A little range time with the drilling.	Well_Well_Well	13/02/15 06:04 PM
Re: A little range time with the drilling.	kuduae	13/02/15 07:15 PM
Re: A little range time with the drilling.	Waidmannsheil	13/02/15 10:10 PM
Re: A little range time with the drilling.	mart	14/02/15 03:13 AM
Re: A little range time with the drilling.	dan_oz	14/02/15 10:42 AM
Re: A little range time with the drilling.	mart	14/02/15 02:09 PM
Re: A little range time with the drilling.	Well_Well_Well	14/02/15 09:16 PM

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