hankousmc
hankousmc
9 posts
Joined October 2013

Inconsistent Primer Seating

No doubt this issue has been discussed before, but I can find no mention of it. Recently, I have noticed that when loading 30-06 Springfield brass on my 550B, some of the primers are not fully seated. The shell plate is tight. The primer cup is adjusted per manual. All protruding primers can be easily seated to proper depth with an RCBS bench primer. Putting the brass with the protruding primer back into station one will not further seat the primer regardless of the force used. The brass is properly engaged in the slot and wire holder (it's not riding high on the wire). If something was wrong with the machine, I'd suspect ALL primers to be seated to the same depth, not different depths.

Suggestions anyone? The temporary solution is priming all brass in the RCBS bench primer prior to reloading.
dillon
Administrator
dillon
3,154 posts
Joined July 2007

RE: Inconsistent Primer Seating

Check the two small bolts that secure the roller bracket to the underside of the machine platform. If the left bolt is loose, it contacts the top of the shellplate, preventing seating of primers.
Be sure that the handle does not contact anything when you push it forward to seat a primer.
hankousmc
hankousmc
9 posts
Joined October 2013

RE: Inconsistent Primer Seating

I can see listed in the manual the screws you are pointing out (14013). However, they are not labeled in any of the parts diagrams. Are the two unlabeled screws being used for fastening 14280 the ones to check? If so, it looks like I need to take off the base plate.

14013 Roller Bracket Screw

14280 Roller Bracket Shell Platform