doublegunshop.com - home Forums Thread Like Summary - Low pressure loading manuals

In the past I have relied on RST for most of my vintage shells. Just for ease. I haven’t actually called them, but the site is usually out of everything I use. My stock is about gone….

I reload for Trap at times, I have various powder handbooks, from the manufacturers but, there isn’t anything in that 5k psi range.

What are some good manuals out there that have a good selection of low pressure recipes these days? From Precision Reloading? Or off Amazon? Lyman?

I’m looking for 12ga 2.5” loading data.

Thank you!

Gil is absolutely correct. To attain a common velocity two different pressures still have to generate similar energy. One can attain that in a very short distance in front of the chamber. The other, a lower pressure load, stretches out its energy creation further down the barrel. So, if I’m shooting an older gun with thick chambers but tapers quickly I choose a higher pressure load, keeping the stress in the strongest portion of the barrel. If the chamber is marginally thin, as many very early breechloaders were, then I’ll opt for a slower powder to distribute pressures into the bore. Common sense.