Luger Chambers VS Modern Chambers

[Doubs]

Originally Posted by Sieger

Doubs, There is a new, "modernized" Herco powder being produced by Alliant (please see their website advertising it).

To what level of cleanness this new powder will shoot in shotguns and pistols (particularly a 9mm Parabellum) is yet to be seen by me.

I weigh all of my powder charges (for both rifle and pistol shooting) with a Lyman Electronic Scale, for precision shooting with both.

With the original formula Herco powder, I haven't noticed a great deal of dirtiness with the 9mm Parabellum; whereas, Unique has always been a filthy burner for me, both in its new and older formulas.

Respectfully, Sieger

I've settled on CFE Pistol Powder for .30 Luger, 7.63 Mauser, 7.62 Tokarev, 9mm. .40 S&W and .45ACP. It's has a burn rate slightly slower than Unique according to the burn chart and is very clean. I meter it through a powder measure and my loads are very consistent. I weigh every 10th round and am never off more than .1 grains.

Most electronic scales - yours included - are accurate to within .1 grains plus or minus. That's the same accuracy I get from my measure.

For precision rifle loads, I use an A&D EJ-123 scale that is accurate to within 2/100 of a grain. I run my loads off on an RCBS Chargemaster and then fine tune them on the A&D scale.

I go for accuracy and function. I NEVER push my loads to the max. I've never seen the need to do so.

[Sieger]

Originally Posted by Doubs

I've settled on CFE Pistol Powder for .30 Luger, 7.63 Mauser, 7.62 Tokarev, 9mm. .40 S&W and .45ACP. It's has a burn rate slightly slower than Unique according to the burn chart and is very clean. I meter it through a powder measure and my loads are very consistent. I weigh every 10th round and am never off more than .1 grains.

Most electronic scales - yours included - are accurate to within .1 grains plus or minus. That's the same accuracy I get from my measure.

For precision rifle loads, I use an A&D EJ-123 scale that is accurate to within 2/100 of a grain. I run my loads off on an RCBS Chargemaster and then fine tune them on the A&D scale.

I go for accuracy and function. I NEVER push my loads to the max. I've never seen the need to do so.

Doubs,

Most interesting!

I need to discuss your 7.63 Mauser and 7.62 Tokarev loads with you right away (in a private message if you would like). I would be most interested in discussing bullet types, diameters and weights with you.

Where can I purchase the A&D scale you mentioned above?

You may think this is a funny observation, but i have noted that some individual powder flakes can easily exceed .1 of a grain, the larger IMR powder series is a good example, so 2/100 of a grain accuracy seems a bit of an overkill to me.

Respectfully,


Sieger

[Doubs]

Originally Posted by Sieger

Doubs, I need to discuss your 7.63 Mauser and 7.62 Tokarev loads with you right away (in a private message if you would like). I would be most interested in discussing bullet types, diameters and weights with you.

Where can I purchase the A&D scale you mentioned above?

You may think this is a funny observation, but i have noted that some individual powder flakes can easily exceed .1 of a grain, the larger IMR powder series is a good example, so 2/100 of a grain accuracy seems a bit of an overkill to me.

Respectfully, Sieger

For both .30 Luger and .30 Mauser/Tokarev, I use a couple of bullets. The 90 grain .309" Hornady XTP HP works well with 5.0 grains of CFE Pistol Powder in either cartridge. The Luger is a much stronger action than the Mauser so I keep my Mauser loads as mild as possible while reliably functioning the action.

I also use the 85 grain .312" Hornady HP in both cartridges BUT I run them through a Lyman Lubrisizer H&I die and reduce the diameter to .309". I use STP to lube the bullets to reduce friction going into and out of the die. I wash the bullets in water and dish washing liquid to remove the STP. The same 5.0 grains of CFE Pistol Powder works well.

Another bullet I use is the 90 grain Sierra HC with exposed lead as you can see in the picture I used in the first post. It's also a .312" bullet but reduced to .309". Note the change in the profile of the nose created by the punch used when resizing. It turns the bullet into almost a round nose which aids feeding.

Because the cartridges have short necks and neck tension is so critical to prevent bullet setback as the cartridges feed through the action, I use a Lee factory crimp die that makes the case mouth grip the bullet tightly and prevent setback.

The A&D EJ-123 scale came from Old Will Knott Scales; good people to deal with. Not cheap but very good. Just remember to keep it away from florescent lights and any electrical interference to prevent drift. https://www.oldwillknottscales.com/a...on-ej-123.html

Mostly I use H-4895 and similar powders for my rifles. One kernel of powder will usually equal .02 (2/100) of a grain.