I have a Dillon 308 case gage, I checked about 50pcs of the MG Brass from Top Brass randomly out of 1000 in the gage, the rear of the gage has a low cut in it and the base of the resized cases sat slightly above it and on the high part it drops down just abit acutally the base kind of sits in the middle of the two and on the bullet end the mouth is pretty close if not right at being flush on top so I can only assume they are sized correctly as they all measured 2.005" |
Assuming that you've re-sized all of the cases with consistency, that sounds GTG.
BTW, I do things as a "lot." So, I always F/L size my fired brass. After re-sizing, I'll take a small test sample and IF one case needs a trim.......I'll run the whole lot though the trimmer. First Time: New, once fired (purchased and given) and range pick up brass are always trimmed (with few exceptions) for consistency sake.
IF it's not done with your brand of trimmer..........don't forget to slightly chamfer and slightly de-burr the necks. I'll ease bullet seating. USE THIS STYLE OF TOOL..........
www.midwayusa.com/eproductpage.exe/showproduct?saleitemid=364181&t=11082005 For ME........AT or BETWEEN the high and low cuts, is "good enough." Though, individuals will vary as to their own specs. for ammo (all at the high or all at the low cut). Whatever, "floats your boat."
I've been told: You actually place the gauge (w/cartridge case) headstamp end down, on a flat surface. The case will sit on the flat surface. The neck end should be, at or between the two cuts, to be correct. Though, since you have a caliper.........measuring works too.
They do go right in the chamber with no problems and extract pretty easily, if they are sized correctly is there some way to use one to set my resizer die ? |
To "set the die"......use the lock ring to lock the position. That way IF you remove the die.....then you will just have to screw it back in (back down to the lock ring). Of course, you'll run a few test cases to check. That is the biggest reason why, I don't like the LEE brand of lock ring.
The bullets have a serrated line around then about 1/16" wide so I am assuming that I seat to the cannelure, check OAL then give it about a .02 of a crimp ? and see how they chamber |
Yes, that band around the bullet is the "cannelure." You can seat it there or go longer or shorter, it's up to you. As for the .02 crimp. Well, it doesn't have to be "exact science." "Good enough" is what I look for. And, yes, testing throughout the process is always good.
And if they are sized correctly should I run them all thru again just in case one was not done correctly ? |
You mean the re-sizer die?
That is not needed, since you've been testing throughout the process. And, YOU HAVE FAITH, RIGHT?
Besides, I've found that loaded cartridges won't fit the F/L sizer die (w/de-capper removed). Because, once the bullet is seated...........the case neck will be bigger due to expansion of the brass in the neck, when the bullet was seated.
Perhaps, I should say, YMWV.............as there might be exceptions.
Aloha, Mark