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Rifles, Reloading, Optics, Equipment
Reloading
Some brass not bumping back
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<blockquote data-quote="emp1953" data-source="post: 2870795" data-attributes="member: 71817"><p>are you using an RCBS press?</p><p>Just for fun, on the cases that are chambering with resistance, clean them thoroughly on the outside with alcohol or acetone, Cover the entire case with a black Sharpie and let it dry. Then chamber it, Lets see where the case is contacting the chamber.</p><p>Here are some things that I ran into. I use an RCBS single-stage press. I've had it since 1969. The bushing through which the ram runs had slightly worn. I couldn't detect any wear but it was evident after I used a friend's runout gauge. The cases themselves were no longer straight when they came out of the sizer. Straight going into the sizer, off-center coming out. I contacted RCBS and they had me ship the press back and they refurbished it. Now none of the sized cases fail my runout test.</p><p>Another issue arose with shell holders. Most rifle cases that I reload use the same shell holder, the bases are all the same dimension. The shell holder gets a lot of use. Gunk builds up in the groove where the shell base is captured, not allowing the case to center on top of the ram, thus the misalignment caused cases that failed runout. Again cases went in straight and came out off-center. I reloaded some pistol ammo and in the process lost my original rifle shell holder, so I ordered a set of Lee shell holders. Turns out they are not quite the same animal. Where the RCBS shell holder fits snugly in the slot at the top of the ram, the Lee holders had some up-and-down play. Not much but apparently enough. The die adjusted to touch the shell holder did not bump the shoulder far enough. I bought 3 of my favorite shell holders from RCBS and my shoulder bump issues went away. All rounds now fall into the chamber without any additional pressure.</p></blockquote><p></p>
[QUOTE="emp1953, post: 2870795, member: 71817"] are you using an RCBS press? Just for fun, on the cases that are chambering with resistance, clean them thoroughly on the outside with alcohol or acetone, Cover the entire case with a black Sharpie and let it dry. Then chamber it, Lets see where the case is contacting the chamber. Here are some things that I ran into. I use an RCBS single-stage press. I've had it since 1969. The bushing through which the ram runs had slightly worn. I couldn't detect any wear but it was evident after I used a friend's runout gauge. The cases themselves were no longer straight when they came out of the sizer. Straight going into the sizer, off-center coming out. I contacted RCBS and they had me ship the press back and they refurbished it. Now none of the sized cases fail my runout test. Another issue arose with shell holders. Most rifle cases that I reload use the same shell holder, the bases are all the same dimension. The shell holder gets a lot of use. Gunk builds up in the groove where the shell base is captured, not allowing the case to center on top of the ram, thus the misalignment caused cases that failed runout. Again cases went in straight and came out off-center. I reloaded some pistol ammo and in the process lost my original rifle shell holder, so I ordered a set of Lee shell holders. Turns out they are not quite the same animal. Where the RCBS shell holder fits snugly in the slot at the top of the ram, the Lee holders had some up-and-down play. Not much but apparently enough. The die adjusted to touch the shell holder did not bump the shoulder far enough. I bought 3 of my favorite shell holders from RCBS and my shoulder bump issues went away. All rounds now fall into the chamber without any additional pressure. [/QUOTE]
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Reloading
Some brass not bumping back
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