Not sure "conjecture" is the right word on this next part?......gut feeling maybe?
OK,I don't have "that many" moulds,maybe 20-30? On every GC mould we have,once seated,there's a very noticeable gap between the top of GC and where the lowest drive band begins. It's precisely this gap that is being lubed on my HV bullets. Which is a .30(.06 and .308),a .22(.223 and 22-250),and a 7-08 . It's the whole "less is more" thing meaning,less lube=higher velocity.... a little more involved but that's for a different day.
On the "inbred" 7 ,there isn't any gap. Now the "conjecture"..... these see the top of the Hornady GC's not only closing the gap but,depending on height of the base milling,you can.... very lightly bury the GC into the drive band. Which is part of the last post's "soft seating".
Does it help? Beats the snot out of me but.....
Nobody is gonna convince me otherwise, that the only reason there's a gap is because of production tolerances "built in" by mould makers. One more big check mark to milled bases though.... this gap is now EASILY set to whatever floats your boat. I will say,it looks good.
OK,I don't have "that many" moulds,maybe 20-30? On every GC mould we have,once seated,there's a very noticeable gap between the top of GC and where the lowest drive band begins. It's precisely this gap that is being lubed on my HV bullets. Which is a .30(.06 and .308),a .22(.223 and 22-250),and a 7-08 . It's the whole "less is more" thing meaning,less lube=higher velocity.... a little more involved but that's for a different day.
On the "inbred" 7 ,there isn't any gap. Now the "conjecture"..... these see the top of the Hornady GC's not only closing the gap but,depending on height of the base milling,you can.... very lightly bury the GC into the drive band. Which is part of the last post's "soft seating".
Does it help? Beats the snot out of me but.....
Nobody is gonna convince me otherwise, that the only reason there's a gap is because of production tolerances "built in" by mould makers. One more big check mark to milled bases though.... this gap is now EASILY set to whatever floats your boat. I will say,it looks good.
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