30 cal Luger

Chickenthief · 03-09-2017, 06:28 PM

My limited 7,65x21 Parabellum~.30 Luger experience is that you have to load them "hot".
With a 93grain bullet pressures can be held in the medium/high zone.
With ie. a 73grain bullet the way hot loads comes in as it is momentum that drives the recoil/reloading.
So when bullet weight goes down speed has to move up to compensate.

The top of my 95mm~3.75" barreled pistol weighs 422gram~.929lbs and needs a recoil energy of @2.2joule~1.63ftlbs to reload reliably.

So:
Original DWM load 93grain bullet at 1213fps (1.64ftlbs)
A 73grain bullet needs to go @465m/s~1525fps (tall order!)
A 85grain bullet needs to go @399m/s~1310fps (my reloads from sunday went @382m/s~1253fps and did'nt reload at all. Not a single one out of 100). 1310fps is barely doable within pressure limits with the powders i have acess to.

All y'all with longer barrels are better off as speed comes free from the fact.

85gr jacketed bullet set to 29mm~1.14"
4.7gr Bullseye is about max.
5.2gr Unique is about max.
6.3gr Longshot is about max.
5.8gr WAP is about max.

These are the only US powders that will give a complete burn in such a short tube and keep pressures below max.
Bear in mind that this is guestimates made with Quickload and as always YMMW.

I have good results with Lees 93gr .311 bullet cast to 86gr (94% lead + 3% tin + 3% antimony).
Pushed to @1280fps it reloads reliably every time and ejects with autority.
As a lead bullet is easier to push through, pressures are lower and speed comes a result of that.

On a sidenote i have a Heckler & Koch 630 roller delayed blow back semiauto in .223.
That pig needs to be spanked in order to reload reliably. Drop MV 10% from max. and its transformed to a manual repeater.

03-09-2017, 06:28 PM	#3
Chickenthief User Join Date: Dec 2016 Location: Denmark Posts: 135 Thanks: 0 Thanked 131 Times in 48 Posts	My limited 7,65x21 Parabellum~.30 Luger experience is that you have to load them "hot". With a 93grain bullet pressures can be held in the medium/high zone. With ie. a 73grain bullet the way hot loads comes in as it is momentum that drives the recoil/reloading. So when bullet weight goes down speed has to move up to compensate. The top of my 95mm~3.75" barreled pistol weighs 422gram~.929lbs and needs a recoil energy of @2.2joule~1.63ftlbs to reload reliably. So: Original DWM load 93grain bullet at 1213fps (1.64ftlbs) A 73grain bullet needs to go @465m/s~1525fps (tall order!) A 85grain bullet needs to go @399m/s~1310fps (my reloads from sunday went @382m/s~1253fps and did'nt reload at all. Not a single one out of 100). 1310fps is barely doable within pressure limits with the powders i have acess to. All y'all with longer barrels are better off as speed comes free from the fact. 85gr jacketed bullet set to 29mm~1.14" 4.7gr Bullseye is about max. 5.2gr Unique is about max. 6.3gr Longshot is about max. 5.8gr WAP is about max. These are the only US powders that will give a complete burn in such a short tube and keep pressures below max. Bear in mind that this is guestimates made with Quickload and as always YMMW. I have good results with Lees 93gr .311 bullet cast to 86gr (94% lead + 3% tin + 3% antimony). Pushed to @1280fps it reloads reliably every time and ejects with autority. As a lead bullet is easier to push through, pressures are lower and speed comes a result of that. On a sidenote i have a Heckler & Koch 630 roller delayed blow back semiauto in .223. That pig needs to be spanked in order to reload reliably. Drop MV 10% from max. and its transformed to a manual repeater.