Bulge on case

[kestak]

Greetings,

I am not sure how to explain it, but I think experienced reloaders will understand my question:

The first station on a dillon 550 is primer removing and resizing the case.
I noted that when those actions are done, there is still a small bulge at the base of the case (right now I reload 45acp and 38spl/357mag) because the die does not go all the way down (And it is normal, because the case is held in place by the shellplate.)

My question is: Do I have to be concerned by that small bulge?

Thank you

[zac07]

Can you adjust the die to go all the way down ? I had that problem and some of the rounds wouldn't fit in the chamber.

[kestak]

Greetings,

The die is already in contact (minus an hair space) with the shellplate.

Thank you

[zac07]

What kind of gun was it fired out of ? Will they still feed into your weapon ?

[Mercmar]

I load on a 650 and adjust the sizing die down for a firm contact with the shellplate.

[kestak]

Greetings

The 45 has been shot with a XD45c and the 357/38spl has been shot with a Taurus revolver.

Thank you

[jdavionic]

Just my $0.02 worth...Can you quantify the diameter difference? Take calipers & measure the area with the buldge. Then measure an area slightly up (or forward) on the case that does not exhibit the buldge. Both daimeters may be within the tolerance for the diameter with one on the high side and the other on the low side, which would make the buldge more noticeable. But I would measure both and check them. If the buldge area is outside the tolerance range, then I would contact the die manufacturer and request a replacement die.

I don't have a .45; so I don't know the dimensions off hand. I believe it's .476 at the base of the case. My reloading manuals include tolerances but I don't have access to my manuals right now to give you a tolerance on that dimension.

[kestak]

Greetings,

I'll measure a few cases and post back the measurements.
it may be just by tomorrow or Saturday.

Thank you

[kestak]

Greetings,
Finally, I had time during lunch to drive hoem and make some measurements.
First of all, my press is setup for 375/38spl right now, so I was able to put my hand on only one 45acp resized case.
Secondly, I noticed the bulged cases are not from my 45 xd, but from once fired brass I picked up at the range from a shooter I got the permission to pick from. I do not recall what handgun he was using.

.45acp
Mouth: bulge:
.4665 .473
I was able to resize the 357 cases shot by me with my Taurus revolver. I did 5 of those and here are the measurements:
Mouth Bulge
.3755 .3805
.3750 .3805
.3750 .3815
.3750 .3800
.3756 .3795

In conclusion:
- It is quite a small bulge
- My XD does not produce any bulge
- The 357 produces a bulge
- I checked the 38 spl cases and they have a bulge too. I did not measure them, I was out of time.

What do you think?
Thank you

[jdavionic]

Originally Posted by kestak

I was able to resize the 357 cases shot by me with my Taurus revolver. I did 5 of those and here are the measurements:
Mouth Bulge
.3755 .3805
.3750 .3805
.3750 .3815
.3750 .3800
.3756 .3795

In conclusion:
- It is quite a small bulge
- My XD does not produce any bulge
- The 357 produces a bulge
- I checked the 38 spl cases and they have a bulge too. I did not measure them, I was out of time.

What do you think?
Thank you

Unfortunately I don't have a reloader's manual at work. From what I've found online, the diameter should be 0.3790 after sizing. What I don't know is the tolerance band for that dimension. However, I think you mentioned the buldge is at the base of the case. Assuming so, I don't expect the numbers that you have are a problem. I wouldn't think that the mouth being slightly tapered would be a problem. You will likely need to flare the mouth anyway when seating the bullet. I wish I had my reload data here...I could be more helpful. Perhaps one of the forum reload gurus has there's handy.