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Rifles, Reloading, Optics, Equipment
Reloading
Help! Case neck runout...bent decapping rod?
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<blockquote data-quote="orch" data-source="post: 551311" data-attributes="member: 35688"><p>jeff i think you are dead on in your diagnosis of my problem! i measured the OD of the necks on some sized cases without the expander and i am getting about 5 thou smaller diameter than with the expander in... so i am guessing the brass is getting moved 8 thou or so when you take your sping back of 2 thou into account each way... so yah that die is squeezing that brass down quite a bit... and it does take a bit of a pull to get that ram back down as the expander pulls back out... </p><p> </p><p>i switched to the lapua brass in the 308 because i was impressed with my 338 lapua brass's neck thickness consistancey so i hope it isnt inconsistent neck thickness (i was really hoping to avoid having to neck turn this stuff)</p><p> </p><p>i did try the die with the stem loose and with lube in the inner neck and it showed no improvement... </p><p> </p><p>only neck sizing is pretty much what i am doing with my fl die as it is... its a savage that i swap barrels in and when i set the headspace when i put the barrel on i headspace it to minimum speck so the fl die was only bumping the shoulder back about 1 thou from the fired case dimension... so i may as well just go with a fl bushing die.... i have one for my 338 lapua and have been really happy with it so i may as well just follow suit with the 308.... </p><p> </p><p>orch</p></blockquote><p></p>
[QUOTE="orch, post: 551311, member: 35688"] jeff i think you are dead on in your diagnosis of my problem! i measured the OD of the necks on some sized cases without the expander and i am getting about 5 thou smaller diameter than with the expander in... so i am guessing the brass is getting moved 8 thou or so when you take your sping back of 2 thou into account each way... so yah that die is squeezing that brass down quite a bit... and it does take a bit of a pull to get that ram back down as the expander pulls back out... i switched to the lapua brass in the 308 because i was impressed with my 338 lapua brass's neck thickness consistancey so i hope it isnt inconsistent neck thickness (i was really hoping to avoid having to neck turn this stuff) i did try the die with the stem loose and with lube in the inner neck and it showed no improvement... only neck sizing is pretty much what i am doing with my fl die as it is... its a savage that i swap barrels in and when i set the headspace when i put the barrel on i headspace it to minimum speck so the fl die was only bumping the shoulder back about 1 thou from the fired case dimension... so i may as well just go with a fl bushing die.... i have one for my 338 lapua and have been really happy with it so i may as well just follow suit with the 308.... orch [/QUOTE]
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Reloading
Help! Case neck runout...bent decapping rod?
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