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Discussion in 'Ammunition & Reloading' started by fmiller, Oct 10, 2018.
You need a factory resizer.
The case has bulged from the lead and now it’s too large.
my guess is shooting 38 and not cleaning it
That could be an issue as well, but that reloaded round doesn’t look good. It’s needs some additional work to be brought into spec...
agreed the round doesnt look good but it goes half way in... are the cylinders tapered?
Will you measure above and below this line? Please follow calipers along brass and let us/me know your diameters?
I stand behind my earlier comment. Cast rounds are typically LARGER than jacketed and plated by just a hair and adding that on top of brass thickness causes issues. Some brass isn’t as thick so it won’t do it but some is thick and will cause issues every.damn.time.
Because of this, I added a Lee FCD (factory crimp die) to my station on the press. After this, never had an issue.
The back of the cylinders have more clearance than the mouth or the throat, about .010 larger than a case. But I suspect multiple things at play, probably insufficient crimp combined with dirty chambers. Possibly oversize bullet but if they are commercial that's rather unusual.
The bulge isnt that unusual, this is one of my rounds that drops right in a chamber, it looks huge but it is only .0015 larger at the bulge than below. I suspect his round is not crimped enough, it flares at the mouth really bad.
Yep. I've got .41 magnum cartridges that look similar, and they drop right in.
^^^This... A Lee Factory Crimp Die seriously simplifies things for sure. But should be able to get a roll crimp from the seating die if finessed properly.
Reloading is a dark art... Kinda like cooking
Agreed a FCD does take a lot of the guesswork out of things, and they are cheap. If you are running a 4 or more station press there is really no reason not to use one.
I have had this issue with cast bullets that did not go through the sizer. I don't know the source of your lead bullets, but casting can produce slightly oversized bullets, which in turn when stuffed into the belled case mouth, make the round oversized. I have on occasion run a completed round through my sizing die when I have had this issue and it cleaned it right up.
Do you have a machinist's scale? 6", 12" or whatever. Lay it along the side of the cartridge and see if there is air between the flare and the case head (NOT the rim). You can then see if the flare is still there. If it is, they don't fit because the reloading process is not finished.
And dial calipers are what, $20 at Harbor Freight? I could not reload without calipers and a straight edge to check crimp - both taper and roll.
This ^ - after looking at the enlarged pic Dyj posted i can see the mouth is still slightly belled and not tapering into the crimping groove of the bullet. Look at the pic Jordanka posted and the crimp is completed on this round.
OPs is a slightly short case that ain't making it to the crimping roll in the die. Common problem. - FCD eliminates this.
Try dropping a bullet into each chamber and see if it falls through.
It looks like you have a bell shape at the end of your case That is wider than the case.Vs a crimp. If you can Mic it it should tell you
Except you've got to take into consideration the thickness of the brass walls as well.
THANK YOU to everyone who has replied!
I’m using a Dillon crimp die, but gave no problem with getting a Lee die for the final crimp.
I’ll also tweak the (Hornady) seating die to remove as much belling as I can...
I was just thinking that would be an easy check for bullet oversize, cylinder lead crud ring, and chamber roundness.
After seeing @Dyjital s zoomed in pic. It kind of looks like there isn’t enough crimp or any at all. Right where I circled you can almost look inside the case and see a slight bell as if this cartridge still has partial belling.
The crimp die was a gift. I just set it and got going. But now I wonder if it's ACTUALLY crimping...
That would explain a lot.