FGT
Member
I have a Remington mdl 700 bdl in .338 win mag that is giving me serious extraction problems. Yesterday I tried 5 different loads with new brass using IMR 4350 behind a Nosler 180 grain bullet ranging from 72 grains (very mild) to 74.5 grains all well under the maximum loads specified in several different manuals. Velocity varied from 2900 fps to 3090 fps amd was fairly linear in proportion to powder charge. At any velocity above 3000 fps the bolt would open easily enough but I could not get it to move rearward with out considerable effort.
I have had similar problems with H 414 and VV 140 with appropriate mid range loads. The velocities are well below the specified maximums. I checked the distance from the bullet to the lands and it was from .010 to .011 all within specs. The velocity is low but correct for my powder charges and barrel length but the rifle is acting like I have excessive pressures. Some of the brass that has been fired with the heavier loads exhibits a tendancy to grow in OAL by as much as .085 ". Does anyone have an idea of what the problem may be? This rifle has less than 100 rounds through it.
I have had similar problems with H 414 and VV 140 with appropriate mid range loads. The velocities are well below the specified maximums. I checked the distance from the bullet to the lands and it was from .010 to .011 all within specs. The velocity is low but correct for my powder charges and barrel length but the rifle is acting like I have excessive pressures. Some of the brass that has been fired with the heavier loads exhibits a tendancy to grow in OAL by as much as .085 ". Does anyone have an idea of what the problem may be? This rifle has less than 100 rounds through it.