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Brock and Norris .308 f/tr


colin jalland

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It's a 30" true flite 1 in 13 twist tight neck chamber with a throat designed for the berger 155.5gr .I am still working on the loads but it shoots well below .5 moa with the best groups in the .3's just trying to get more velocity at the mo. i am going to try 46 , 46.5 and 47gr of varget in the morning which should get the velocity i need .

cheers colin (i have a lefty H S HTR .308 aswell )

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Just a quick pic of the work so far .i have the velocity but the es is to high .I have another load with the es of 18fps but the velocity is 100 fps slower 3030fps .Do you think neck tension can have an effect on es is it more a powder and primer problem .any view's on es would be great .cheers Colin

 

 

 

th_DSC05982.jpg

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I turning the necks to 15 thou wall thickness the using a redding comp neck die with a .334 insert which gives around 1.5 to 2 thou tension .The cases where run through a body die .

cheers

colin

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  • 3 months later...

theres only one thing wrong with that rifle ?........i dont own it :D very nice indeed

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