Page 2 of 2
Re: Duff primers?
Posted: Thu Jun 27, 2013 6:32 am
by dromia
Meaty wrote:The primer doesnt show any of the usual tell-tale signs of over pressure so maybe just a duff one!
What may they be?
Studying primers has to be one of worst ways of trying to gauge pressure.
It's only recommendation is that it is easier to do and just as reliable than wrapping oneself in a white sheet, disembowelling a sheep, poking the entrails with a stick and divining the pressure from that.
Re: Duff primers?
Posted: Thu Jun 27, 2013 8:08 am
by Hauptman
Well, I did take the other tell-tale signs into account, including case head expansion.
I'll have to wait a few days to see if the chicken entrails end up pointing north or south, though.
In the meantime, I'm off to get some Remmy 7.5's (Thanks for the suggestions StandEasy......are you by any chance related to Stan Dupp?)
H/man
Re: Duff primers?
Posted: Thu Jun 27, 2013 8:37 am
by dromia
Just out of curiosity, what is velocity of these rounds?
Re: Duff primers?
Posted: Thu Jun 27, 2013 5:16 pm
by Hauptman
2990 fps (Admittedly, it was around 10C colder when chronied them). Fill ratio is 102.1% at a COAL of 2.26" (according to Berger), PPU cases, full sized.
H/man
Re: Duff primers?
Posted: Fri Jun 28, 2013 8:57 am
by Hauptman
Sim G said: According to the Vhit manual, you're 0.3gn off the maximum. COL at 2.260.
I couldn't find a load for 73grain Berger HPBT's in Vhit's online manual, or anywhere else, hence my enquiry to Walt Berger.
H/man
Re: Duff primers?
Posted: Fri Jun 28, 2013 12:09 pm
by dromia
What was Mr Bergers pressure for these rounds he recommended, and how did he test it?