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Double Rifles, Single Shots & Combinations >> Double Rifles

coll416
.275 member


Reged: 19/02/12
Posts: 82
Loc: Central Queensland
Re: Double Rifles and Regulation
      01/09/23 09:11 AM

Thanks for the informtive article NitroX. I borrowed the much touted book by Graeme Wright which is well summarised by you, I took detailed notes which align with your advice.

I am at an early stage getting in sync with my Merkel 140 9.3x74. The rifle was regulated with 247gn Cone Point which are unavailable as are most non monolithic bullets near this weight, however Woodleigh might save me soon with some 250gn, I am presently guarding a small quantity of these. As a 9.3x62 fan I know what the 9.3x74 cartridge will do.

My focus is to practically duplicate the regulation ammunition for most of my shooting (pigs)whilst also achieving a workable 286gn load for heavier game. I think this means I have to get the 286gn load as close a possible velocity wise to the 247gn cone point factory spec of 2450fps. Current testing using AR2209 with the 270gn Speer seems to be confirming this assumption. I believe my chronograph will be critical as I get closer.

Present data collected:

Factory 286gn approx 2250fps LB 2.75" left & RB 2.5" right at 50m
Handload 270gn Speer approx 2350fps LB 1.5" left & RB 1.75" right at 50m this load shot much better than a 270gn load at approx 2260fps.

The elevation seeems to be working in reverse to single barrel rifles as the velocity increases the load shoots lower. The elevation is not a concern for me presently as it not moving greatly & I have adjustment on my front sight.

Thanks again for the advice.

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Subject Posted by Posted on
* Double Rifles and Regulation NitroXAdministrator 09/05/23 10:55 PM
. * * Re: Double Rifles and Regulation NitroXAdministrator   16/06/23 11:28 PM
. * * Re: Double Rifles and Regulation NitroXAdministrator   20/06/23 04:17 PM
. * * Re: Double Rifles and Regulation 93x64mm   20/06/23 09:32 PM
. * * Re: Double Rifles and Regulation eagle27   21/06/23 10:22 AM
. * * Re: Double Rifles and Regulation NitroXAdministrator   21/06/23 06:37 PM
. * * Re: Double Rifles and Regulation NitroXAdministrator   21/06/23 06:43 PM
. * * Re: Double Rifles and Regulation Pugwash   21/06/23 10:44 PM
. * * Re: Double Rifles and Regulation NitroXAdministrator   22/06/23 12:00 AM
. * * Re: Double Rifles and Regulation transvaal   22/06/23 01:13 AM
. * * Re: Double Rifles and Regulation NitroXAdministrator   22/06/23 07:01 PM
. * * Re: Double Rifles and Regulation coll416   01/09/23 09:11 AM
. * * Re: Double Rifles and Regulation NitroXAdministrator   01/09/23 04:50 PM
. * * Re: Double Rifles and Regulation mchughcb   02/09/23 01:42 PM
. * * Re: Double Rifles and Regulation mchughcb   07/09/23 08:04 PM
. * * Re: Double Rifles and Regulation 93x64mm   08/09/23 06:32 AM
. * * Re: Double Rifles and Regulation mchughcb   08/09/23 04:15 PM
. * * Re: Double Rifles and Regulation NitroXAdministrator   08/09/23 06:33 PM
. * * Re: Double Rifles and Regulation mchughcb   09/09/23 04:02 PM
. * * Re: Double Rifles and Regulation NitroXAdministrator   10/09/23 04:01 PM
. * * Re: Double Rifles and Regulation Waidmannsheil   10/09/23 07:08 PM
. * * Re: Double Rifles and Regulation NitroXAdministrator   10/09/23 07:41 PM
. * * Re: Double Rifles and Regulation 85lc   02/09/23 02:18 AM
. * * Re: Double Rifles and Regulation NitroXAdministrator   09/05/23 11:56 PM
. * * Re: Double Rifles and Regulation 85lc   10/05/23 02:51 AM
. * * Re: Double Rifles and Regulation NitroXAdministrator   10/05/23 07:11 PM
. * * Re: Double Rifles and Regulation NitroXAdministrator   10/05/23 07:15 PM
. * * Re: Double Rifles and Regulation kuduae   10/05/23 06:16 AM
. * * Re: Double Rifles and Regulation NitroXAdministrator   10/05/23 07:36 PM
. * * Re: Double Rifles and Regulation 85lc   11/05/23 03:00 AM
. * * Re: Double Rifles and Regulation Nojden   06/06/23 11:17 PM
. * * Re: Double Rifles and Regulation JudoFire   16/06/23 04:38 AM
. * * Re: Double Rifles and Regulation NitroXAdministrator   16/06/23 06:55 PM
. * * Re: Double Rifles and Regulation JudoFire   16/06/23 08:48 PM
. * * Re: Double Rifles and Regulation degoins   10/05/23 02:29 AM

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