RIO PRIMERS

[Mike of the Mountain]

The digging around I have done in the past and info from powder manufacturers was as long as you are not substituting a Federal 209/209A or Cheddite 209 for another 209 style primer the difference is minimal and may even be lesser pressures/velocities depending on the original primer called for. The Federal primers are hotter than Win, Rem, CCI, Fiocchi, Nobel, Rio. Since we are loading on the lower end of SAAMI specs there are viable substitutions. Off the record info from manufacturers is yes, you can substitute the lower burn temp primers. On the record info is dictated by lawyers. It is what it is.

[Andy]

Originally Posted by Mike Koneski

The digging around I have done in the past and info from powder manufacturers was as long as you are not substituting a Federal 209/209A or Cheddite 209 for another 209 style primer the difference is minimal and may even be lesser pressures/velocities depending on the original primer called for. The Federal primers are hotter than Win, Rem, CCI, Fiocchi, Nobel, Rio. Since we are loading on the lower end of SAAMI specs there are viable substitutions. Off the record info from manufacturers is yes, you can substitute the lower burn temp primers. On the record info is dictated by lawyers. It is what it is.

Mike are saying that Cheddite are also hotter?

[Mike of the Mountain]

Originally Posted by Andrew Sacco

Mike are saying that Cheddite are also hotter?

That's what the data said. Remember though that we are loading on the low end of SAAMI specs too. Not as hot as the Federal 209/209A but burn hotter than the other 209 makers.

I don't use Federal or Cheddite so I can't share any results. I know guys who use Cheddites instead of Rem, Win, etc with no issues.