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30-378 Weatherby

It is time for a new match barrel from Tim North. Testing new ground for a barrel,want to get rid of the free bore.Pacfic tool and gauge says bullet needs to be .040 off the lands for the gas and pressure problems.Will lose 100-125 fps at the muzzle.looking for smaller groups, with factory barrel and bedding groups are at 3/4-5/8 @100 yds .Has anyone got rid of there free bore. Stan
 
I have a 28" S/S PacNor super match Medium Palma chambered my 30-378 Wea., with no free bore, on my modified Rugger M77 action. I am seated .008" off lands. My load is 119gr of Accurate Arms 8700 powder, Weatherby case, Federal 215M primers, and a Nosler 165gr AccuBond. I am getting 3,684 FPS and .6" groups @ 100yds, 4.5" groups @ 600yds, but load is at max.
 

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