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I neck size 308 cal. for a Rem 700 LTR, only for target shooting. Now I'm trying partial neck sizing, only sizing about 1/8 down. Are you using hot loads. I have resized my winchester caseings 9 times already without any hard chambering. I'm loading 42.0 Grains of IMR 4064 168 Gr. Sierra HPBT that is about middle of the powder range. I mark my cases to keep the same position when reloading & chambering a round, it's sits in the same position each time. Maybe overkill but I try to keep everything exact, even chambering the round in the same position time after time. How often do you clean your rifle. Snug is OK but hard after 1 firing, shouldn't be IMO. Hope I helped in some way. Be Safe Chris
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