9 mm resizing problems
Quote from Reloader on November 13, 2017, 9:50 pmAfter switching from a SDB to the 650 I'm getting inconsistent results with 9 mm ammo. Out of 200 rounds done in the same session, with same components, more than half of the rounds will not plunk in either a RO 9 mm or a CZ target. I'm using blue bullets, coated for steel challenge. T
The base dimensions are within .391 max diameter, and all cartridges are the correct length. It is mixed brass, some picked up at range, some always shot thru my guns. The bullets are a mix of cast lead rn, or coated blue bullets with a more conical shape. But I'm finding no consistent pattern to the problem rounds. Thoughts?
After switching from a SDB to the 650 I'm getting inconsistent results with 9 mm ammo. Out of 200 rounds done in the same session, with same components, more than half of the rounds will not plunk in either a RO 9 mm or a CZ target. I'm using blue bullets, coated for steel challenge. T
The base dimensions are within .391 max diameter, and all cartridges are the correct length. It is mixed brass, some picked up at range, some always shot thru my guns. The bullets are a mix of cast lead rn, or coated blue bullets with a more conical shape. But I'm finding no consistent pattern to the problem rounds. Thoughts?
Quote from Reloader on November 13, 2017, 9:55 pmAfter re-reading let me clarify. Ignore that first post!
After switching from a SDB to the 650 I'm getting inconsistent results with 9 mm ammo. Out of 200 rounds done in the same session, with same mix of components, more than half of the rounds will not plunk in either a RO 9 mm or a CZ target, or in a case gauge.
The rounds don't simply not plunk, they get stuck about 2/3 to 3/4 of the way into the chamber or the case gauge. I reloaded on the SDB with the same mix of components, and had no such problems.
The base dimensions of the rounds that get stuck seem to be within the SAMMI .391 max diameter, and all cartridges are the correct length. It is mixed brass, some picked up at range, some always shot thru my guns. The bullets are a mix of cast lead rn, or coated blue bullets with a more conical shape. But I'm finding no consistent pattern with the problem rounds.
After re-reading let me clarify. Ignore that first post!
After switching from a SDB to the 650 I'm getting inconsistent results with 9 mm ammo. Out of 200 rounds done in the same session, with same mix of components, more than half of the rounds will not plunk in either a RO 9 mm or a CZ target, or in a case gauge.
The rounds don't simply not plunk, they get stuck about 2/3 to 3/4 of the way into the chamber or the case gauge. I reloaded on the SDB with the same mix of components, and had no such problems.
The base dimensions of the rounds that get stuck seem to be within the SAMMI .391 max diameter, and all cartridges are the correct length. It is mixed brass, some picked up at range, some always shot thru my guns. The bullets are a mix of cast lead rn, or coated blue bullets with a more conical shape. But I'm finding no consistent pattern with the problem rounds.
Quote from Reloader on November 14, 2017, 5:46 amVery strange. First thought for me is to ask if you’re sure you have the sizing die adjusted correctly.
Second guess would be you’re belling the mouth too severely and not crimping back to offset.
Lastly, I’d mic out the bullets. I have exactly zero experience with coated bullets so I can’t help much there but if the case dimensions are right, my guess is the bullet is grabbing the rifling too soon.
Very strange. First thought for me is to ask if you’re sure you have the sizing die adjusted correctly.
Second guess would be you’re belling the mouth too severely and not crimping back to offset.
Lastly, I’d mic out the bullets. I have exactly zero experience with coated bullets so I can’t help much there but if the case dimensions are right, my guess is the bullet is grabbing the rifling too soon.
Quote from Reloader on November 14, 2017, 1:05 pmFirst thought is that the sizing die is not down low enough. Raise the platform to the max height and the lower the die until it just touches the shell plate.
Second thought is when I was loading cast bullet their profiles are fatter then plated or FMJ and I had to seat them a bit deeper because they where hitting the rifling before the cartridge was fully into the chamber.
Kevin
First thought is that the sizing die is not down low enough. Raise the platform to the max height and the lower the die until it just touches the shell plate.
Second thought is when I was loading cast bullet their profiles are fatter then plated or FMJ and I had to seat them a bit deeper because they where hitting the rifling before the cartridge was fully into the chamber.
Kevin
Quote from Reloader on November 14, 2017, 3:09 pmDoes a sized, empty case fully enter and freely exit the chamber/case gage? If no, then see if the die will go lower, and just contact the top of the shellplate. Always tighten the die lock ring with a case up in the die. This centers the die in the toolhead.
If yes, what does your crimp measure? .378-.379" is a good dimension to crimp to. .380" is maximum diameter.
Does a sized, empty case fully enter and freely exit the chamber/case gage? If no, then see if the die will go lower, and just contact the top of the shellplate. Always tighten the die lock ring with a case up in the die. This centers the die in the toolhead.
If yes, what does your crimp measure? .378-.379" is a good dimension to crimp to. .380" is maximum diameter.