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Posted: 3/20/2010 7:30:24 PM EDT
| How do you know when it's time to bump the shoulder? How much do you need to? How exactly do you do it? I have the redding comp. neck sizing set and it has the die for it. If it matters it's a bolt 308 using Lapua brass. Thanks guys |
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agreed that the amount of effort to close the bolt is a good indicator––in a bolt action. It's more difficult to see on an autoloader, especially if it's really close.
I had a problem with my 6.8 recently––my reloaded ammo fed, fired and extracted perfectly....but I couldn't get a live round out of the chamber without resorting to the butt stroke method. Turned out that the shoulder needed to be bumped back about .002"...it was close enough to allow the bolt to slam shut and lock up, but that was with a clean chamber.....who knows what it would have done dirty. (this was caused by an improperly machined shell holder that measured .245" on one side, .248" on the opposite side. It wasn't allowing full length sizing.....5 minutes on the mini lathe and it works perfectly now) eta: RIF......OP stated it's for a bolt gun 
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| When I first got into loading for 223 for my AR, I found out the hard way that I wasn't doing it properly. Even when my press was cammed over it wouldn't put enough bump into my cases. I had to grind down the shell holder - some people grind down the die. My first rounds would load find but get stuck in the chamber and they were almost impossible to eject. I bought a Wilson case gauge and found out that all the ones I was having issues with were not seating correctly in the gauge. I also bought a Redding bump die and bumped the shoulders, since doing this it has made reloading for the AR 100% |
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