9mm brass folding over

[Guest mudduck]

well im not sure whats happing,but about 10 out of 100 of the reloads, the brass is rippling on one side when it comes out of the press,not bat it still cycles through my gun but it dosent look right,it only happens to some and some are worse than others,is it the brass or what???some of the rounds you can barly see the case do this but some you can really tell?? any suggestions

[glockster157]

Which part of the cycle does this happen on? Case sizing, neck expansion, bullet seating or crimping?

[Guest mudduck]

bullet seating and crimping,i have put less and less crimp in it and it still does it only on a few,i just loaded 260 rounds and it happened to 40 of them,some not bad and will shoot fine but some of them are looking rough

[glockster157]

Have you tried flaring the mouths a little more? If any part of the case mouth is under the bullet base you will not only get some buckling but you will damage the bullet. I doubt it is the crimp unless the cases are stretched on one side only and I doubt that in a 9mm.

[Tacblack]

Like glockster157 said,

I ran into this once on my Dillion 550. The powder charging station has loosened up and was not belling the case enough. Also had the shell plate loosen up and brass was tilting at some stations causing me to crush brass at charging station, wrinkle at bullet seating.

[leroy]

Like glockster157 said,

I ran into this once on my Dillion 550. The powder charging station has loosened up and was not belling the case enough. Also had the shell plate loosen up and brass was tilting at some stations causing me to crush brass at charging station, wrinkle at bullet seating.

Plus 1 on this answer. Have had similar problems with the shell plate loosening off. Would also check the powder charging station also.

Hope this helps.

LEROY