I am starting to get a dimple/depression on the shoulder of the cases when I full length resize them. At first I thought it was an accumulation of case lube but I switched dies and calibers and used almost no lube and got the same results. What's Up? Also, are Black Hills Match cases the same as Winchester cases.
I would guess that Black Hills buys cases from the lowest bidder against a performance spec. So, in all the Black Hills calibers and all the cases that Black Hills sells, maybe Winchester made a few. I have Black Hills .223 Match that is every case head stamp because they used once fired brass. So, I guess that means it is the same as Winchester. Once or twice a box.
I believe some dies have a vent hole in them to let the air out when sizing...if its plugged up it will cause the air to get trapped and the result is your dent. Take the die apart and clean it with some solvent...making sure to also remove the solvent as well.
Posts: 4115 | Location: Pa. | Registered: 21 April 2006
If you clean out your die with a solvent and/or degreaser it's a good idea to recondition the pores of the metal inside the die by wiping it down with lube and then with a dry towel. If you don't even a lubed case can take a lot of pressure to resize. It's usually better just to wipe out the interior of the die with a paper towel so you don't strip the metal of lube. I learned this the hard way .
Some lubes are more prone to gathering at the shoulders, RCBS is one of them. Also as mentioned dies without vent holes are more susceptable. The Dillon Spray on lube seems to be less liable to dent shoulders than many others I've tried (plus it's way easy to use)...........................DJ
....Remember that this is all supposed to be for fun!..................
Posts: 3976 | Location: Oklahoma,USA | Registered: 27 February 2004
With some dies I must slightly wipe every case neck/shoulder with a towel, to remove most of the lubricant, otherwise I get dimples, especially with my RCBS 300WM FL die.
Is this a problem that has just cropped up suddenly?
Barring the buildup of lube being the cause, as those above have suggested, and not knowing in what manner you operate your press handle, see if slowing down the case resizing operation helps.
Also, a change in sizing lube to Imperial Sizing Die Wax might prove helpful. You use so little of it that it's almost impossible to get lube dents on the case shoulder.
Posts: 4799 | Location: Lehigh county, PA | Registered: 17 October 2002
Thanks , yes the problem has just started. I am new to reloading and have only resized about 300 cases. I do probably work the handle too fast. I will try slowing it down and changing lubes.
With some dies I must slightly wipe every case neck/shoulder with a towel, to remove most of the lubricant, otherwise I get dimples, especially with my RCBS 300WM FL die.
I totally agree with this as my experience is has been the same. I have sized tens of thousands of .223, 308, and 30-06 cases using RCBS water soluble case lube. I tumble the cases with a wet lube patch. Then I wipe each case with a paper towel around the shoulder and neck. If I do not, I get dimples. And, per my measurements, it reduces case neck runnout.