Well irrespective of what sizing and expander you happen to use..... I'm talking when "oversized",by JB stds,bullets don't fit into the seater die. This is what's taking place on this particular RCBS 6mm seater. I'm not complaining. Bullets are .245 as cast going in the seater. If they aren't dead nuts straight before going in,they are going to get a slick,skid mark right down the nose.
These bullets were some of the first cast from the mould,not broke in yet. They're a little rough and out of round. Which although entirely fixable,it's not worth the effort..... cast better,doh.Amazing how well they group?
This bullet has the custom top punch that is one of the slickest things to ever come off a machine here. It's not like bumping the Lee 285-130..... also not like nose sizing the RCBS145SIL. It's hard to put into words. Anyway.... there's room for improvement right at the GC sizing time.
One method is to take the top punch,which comes to within,.005" of the top drive band....and bring it to bear against the top of the inhouse H&I die. This works fine but,another method sees it with a gap by running the lower die "stop" up.... now if someone just had a 1/4" torque wrench and the matching female "socket". This assembly would replace the Lyman 4500 handle... still serves as a handle but you can record the torque on the GC seating and any minor swaging that may occur.
I can do that by feel on bumping the Lee 130. It also gives an EXCELLENT "visual" because it's going from a RN to a meplat. As mentioned in the past,Stevie Wonder can gauge the bump on this bullets nose,it'sthat easy. The RCBS145 is sized utilizing similar checks N balance because.... the first is rotational measure on the little jewelry C frame press handle(clocking) the "check" comes from a depth measure whilst still in the die.
That's where the torque wrench can get used. Not too terribly dissimilar from torqing actions. You have wrench clocking and witness Mark's but the torque wrench adds #'s to it WITHOUT adding another op. In the world of BMW(bring more wallet) dead serious BR handloading,"they" are using,I think they're called hydro seaters? Really should know figuring how much time I spend on the 6mmBR site...doh. Anyway,it's a pressure gauge that sits on top of an inline seater. It too,once installed,dosen't add any extra steps. You still pull the press handle. The gauge just measures and records the force.
Changing lanes,this is one difference in the beam type vs dial type torque wrenches. The dial type has a second pointer that records the highest point hit. Like a mechanical trigger pull gauge or cheap fish scale.