Buffalo Bore popping primers.

[Pinsnscrews]

Can you pull one of those, put the powder back in and measure the depth from Rim to top of Powder? Then determine how much length of bullet is actually seated VS the powder line?

Trying to figure out if it might be a Compressed Load.

[Dieselman]

Can you pull one of those, put the powder back in and measure the depth from Rim to top of Powder? Then determine how much length of bullet is actually seated VS the powder line?

Trying to figure out if it might be a Compressed Load.

Yep. Have to wait until I get home tonight, to do so.  Wished I had a better puller than my kinetic hammer puller.  I beat that last one silly for about five minutes before I got frustrated and started wiggling it with a pair of pliers.   

[The_Shadow]

Dieselman, how are you using that kinetic puller that is causing you issues.

I smack mine against the end grain of a piece of 4" x 4" block.  The key is the insert the cartridge into the chuck (it is sometimes easier to insert the cartridge in from the bottom) tighten with no slack.  The blow with the puller needs to be struck like that of a dead blow hammer, firm and not let it bounce.  The key is the watch the bullet trying to get it to just drop free with a light tap at the end.

Lighter bullets take more energy to get them to start moving.  Take your time, deliver a firm blow with each smack to the end grain of the wooden block.

I have pulled many several thousands over the years, I am just now wearing out my chuck, but RCBS was kind enough to send me a brand new chuck.  In a pinch you can actually use a shell holder upside down to hold the cartridge for pulling.

Good luck!

[Dieselman]

Using The_Shadows advice to treat my puller like a dead blow hammer and not letting it bounce has worked great. This round came apart easily. 

First up is the measurement of the pulled bullet.  It comes in at exactly .750


Next up was trying to get an accurate measurement of the distance between the powder and the case mouth. To do so I gently set a spent 7.62 Tok case inside the 10mm case and marked the side with a fine tip pen. This measurement was .5275


Now I measured the bullet from the bottom to the seating mark visible on the pulled bullet to come up with .480

To confirm that last number, I measured the amount of the bullet exposed on a non pulled round and came up with .270


So as close as I can tell. There should be .0475" of clearance between the powder and the bullet. Meaning this is not a compressed load. 

[Dieselman]

Here is another picture of the powder.  I have taken about ten different picture trying to get one that looks good, but my camera phone just won't have any of it.  This one was about the best of the bunch

[The_Shadow]

The powder is not BE-86, why do I say that?  BE-86 has a flake almost exactly like Power Pistol but BE-86 has slightly larger white (almost translucent) flake in the mix.

The powder you show is a flattened ball...

[Dieselman]

Yes definitely flattened ball.  Very small too.  About the size of True Blue

[Pinsnscrews]

Thaks for your excellent work up  Dieselman, it was worth exploring.