Frankford Arsenal!My next purchase is a trimmer that makes me feel the same way I hope!
Frankford Arsenal!My next purchase is a trimmer that makes me feel the same way I hope!
So you're setting it up so optimal/normal is mid way through the shell holder range so that if you need some extra bump on larger formed cases you just drop down a few on the holder ladder to a shorter one.It does seem bassackwards until you setup your die with the competition shellholders.
You get a known piece of sizable brass (one that's coming out of the press exactly the way you expected. You use that piece of brass and the +010 shellholder. Size the brass and then measure. From there you'll wind your way down to the standard shellholder. I usually get to the .006 before the bump is right where it needs to be.
Then, go grab one o'them pesky cases. Size it. Then move to the .004. Then you'll see what I was saying in my earlier post in this thread. After that, you'll ALWAYS follow this little tip. You can thank me and everyone else who tried to steer you in that direction. LOL
Some other folks said you could take off some metal from the mouth area of your die. You 'can' do that, but think about what 'that' will do to all the cases you've sized to your satisfaction. Now you're gonna be bumping those shorter than you want ... and there's no way to put that metal back onto your die.
You want to know why. I wanted to know why. Sometimes you've gotta accept that the Twilight Zone explanation is what fits.
I know there are people on this forum who are smarter than me. I also know what's going on here is not an uncommon observation amongst us handloaders.You want to know why. I wanted to know why. Sometimes you've gotta accept that the Twilight Zone explanation is what fits.
Yeah that's a great idea. maybe some sharpie on the case where it won't wear offI know there are people on this forum who are smarter than me. I also know what's going on here is not an uncommon observation amongst us handloaders.
I sure would appreciate it if someone could explain the science behind this phenomenon. Someone's got to know.
And to the OP, I forgot to say this in my previous post: when you adjust the bump on those pesky cases, remember that they'll become almost indistinguishable from the ones that size as expected. If you don't sort them out, you'll encounter this every time you run a batch. Depending on your loading process this can be quite a time setback.
You (and I too) don't get any say so there. It's the way the shellholders are designed. When you reach your desired camover and lock the die in position, the sizing is going to occur based on how those shellholders are engineered (and believe me ... some of the sets aren't spot-on with that .002 increment).So you're setting it up so optimal/normal is mid way through the shell holder range so that if you need some extra bump on larger formed cases you just drop down a few on the holder ladder to a shorter one.
GotchaYou (and I too) don't get any say so there. It's the way the shellholders are designed. When you reach your desired camover and lock the die in position, the sizing is going to occur based on how those shellholders are engineered (and believe me ... some of the sets aren't spot-on with that .002 increment).
So, you start with the shellholder that leaves the shoulders with minimum bump. That's the one labeled .010. When you go to the one labeled .008 you are bumping the shoulders back another .002.
What I said was that 'my' shellholder set 'normally' gives me a perfect bump on the .006 shellholder. I 'do' have a set that the bump hits on the .004 shellholder (but, only on that one set). So YMMV. Also, Redding doesn't include their standard shellholder with the set of competition shellholders. That's important to know too. More $$$ maybe.
Wet sand paper em on a wind
I don't have a large sample size of brass left, but I'm thinking you might be on it with the heavy charges expanding more. Of the couple I've found they are around 2 thousandths longer at the shoulder and they aren't bumping while the shorter cases are acting fine
So, on the standard shell holder that you have, how are you setting up the sizing die? Raise your Ram up all the way to the top of the stroke (highest point), screw the die down until it touches, then lower the Ram to its lowest point (handle in resting normal position), screw die into press 1.5 turns (as per instructions from RCBS, Forster, etc), lube your longest headspaced case and size it. See what your overall length is. If it is t back down below what the length you started with your die isn't sizing the case enough.So you're setting it up so optimal/normal is mid way through the shell holder range so that if you need some extra bump on larger formed cases you just drop down a few on the holder ladder to a shorter one.
Sorry, typed that incorrectly. 1/4 turn past, I have gone up to 1/2 turn in my old press. If I have to go to 1/4 turn in my co-ax press there is a problem with the die not sizing enough. You are correct.I screw the die in enough to bump the shoulder of the given case as much as I want. I know there is a large section of people that hate this hillbilly shell holder style setup that isn't what the directions say, it's always gotten me consistent enough results (until now, though it may not actually be the issue still)
When I wasn't seeing shoulders set back on the few cartridges I did what the rcbs manual stated for stainless sizers, press ram up, die down to ram, press ram down, die in 1/4 turn further and set the lock ring.
This presents no change.
I'm surprised your rcbs instructions say 1.5 turns past contact.. that's a lot further than 1/4 turn past contact!
I don't have to worry about multiple chambers for 243 luckily, I only load for this rifle.
Hmmm I have an old Lee press, maybe I should keep on going and see if that changes anything.Sorry, typed that incorrectly. 1/4 turn past, I have gone up to 1/2 turn in my old press. If I have to go to 1/4 turn in my co-ax press there is a problem with the die not sizing enough. You are correct.
I recall reading somewhere that 5 seconds or more is better for reducing springback.When you size do you hold tension for a second or two?
So if you load them and shoot them do they resize down properly after that or will they always be a problem?Hornady comparator and mititoyo calipers
I've tried it both ways, no change
i don't like cases that have resistance for hunting, and these do that, so I wanted to bump them.
Don't know yetSo if you load them and shoot them do they resize down properly after that or will they always be a problem?