10mm all compatible powders load data

[TonyRumore]

I think you would be better off using less primer and more powder.  The case isn't big enough and/or the powder slow enough to warrant using a magnum primer.

I would suggest going to a CCI 300 and putting more fuel behind the bullet.

Tony

[Benchrst]

I think you would be better off using less primer and more powder.  The case isn't big enough and/or the powder slow enough to warrant using a magnum primer.

I would suggest going to a CCI 300 and putting more fuel behind the bullet.

Tony

What powder / bullet combination does your advice apply to? Certainly not #9, I would hope.

[Benchrst]

26 loads tested today

Furthered GM3, 572, and STEEL (on the fence about this one). Also tested e3 & 20/28.

Results: http://10mm-reloaded.com/load_data/10mmLoadResults07-23-16.html

[PCFlorida]

Nice, thank you for your hard work.

[The_Shadow]

Very nice Benchrest!  there are some there with some promise!  Good info incase the shortages get bad again!

[Benchrst]

Very nice Benchrest!  there are some there with some promise!  Good info incase the shortages get bad again!

Thanks Shawdow!

I guess if there's a point to all this, other than just publishing the results of my hobby, is to have a record of 'what works'. Next to add is PrimaV, and possibly American Select.

Eventually I'll start including Pressure Trace results.

Good thing this is fun

[Benchrst]

Had hoped for a bit warmer temps, but 87 is all it got to

The intent was to test some of the hottest loads at 90+ degrees, to see if any charges needed to be decreased. None did at 87.

The one standout was Unique pushing a 155. I must have messed up the charge weight - 8.5gr @ 45deg produced 1,281, @ 60deg 1,326, and at 85 degress 1,189. That can't be reality, and priding myself
on accuracy in all aspects of this project, it's a bit frustrating. 

Put an assumed minimal charge of STEEL behind a 180 FMJ. Didn't work. High ES. Case expansion, while all over the place, was low. I'm going to load up a few more, and if I can't get
consistency I'll abandon it.

Added Tula to the mix, so there's a comparison between 2.5, 300, 350, 150, S&B, & WLP. Using a 165 and AA7, Tula produced the second highest velocity behind CCI's 350.

Yesterday's results: http://10mm-reloaded.com/load_data/10mmLoadResults08-27-16.html

[The_Shadow]

Once again some excellent work and interesting results!  The primer testing tells an important tale and I was surprised by the Remington 2.5 being the lowest...

I see this listing

10mm 155 MG 11.0 HS-7

HS-7 was a great powder in the day, no longer being made, and no equivalent under another name that I know of...

Alliant Steel looks like it is off kilter, either needs more or just not performing well...
Alliant 20/28 looks to have done better.

Winchester 572 is new to the scene and it looks to need more study.

Thanks for your work and results. 

[Benchrst]

Thanks Shadow!

I realize HS-7 is long gone, but I've got 3lbs, so why not

STEEL has me scratching my head a bit, certainly needs more testing but my gut tells me it's an "abandon".

I'll keep climbing slowly with 20/28 & 572

[Benchrst]

Back from the dead, and the 2nd wettest winter on record!

Limited bit of testing (I'll update the website later this week), spent most of the time playing around with the Pressure Trace platform.

Probably the only chrono readings of interest are:

Undocumented loads below, use at own risk!

IMR Blue (WAG on this one, I started low)

155gr MG JHP / 7.4gr IMR Blue / CCI 300 / new Starline @ 1.255 = 780fps (just enough to cycle a G20 w/ 20# spring)

Vectan Prima V

180 RMR plated RN / 5.4gr Prima V / CCI 300 / new Starline @ 1.260 = 960fps

[Benchrst]

05.03.17 results: http://10mm-reloaded.com/load_data/10mmLoadResults05-03-17.html

Updated master file: http://10mm-reloaded.com/load_data/10mmAllPowders.html

[The_Shadow]

Great report Benchrst.  Interesting to see other powders you are testing as well.
I have to believe the IMR BLUE will likely need to be used closer to what we have tested with Blue Dot for definitive comparison.
Possibly side by side equal amounts of each say 8.0 grains of each, 8.4 grains with same bullets and primers.

Thanks for your reports...

[Benchrst]

Yesterday's results (just a few loads) http://10mm-reloaded.com/load_data/10mmLoadResults05-10-17.html

Continue to climb slowly with IMB Blue, next chrono session I'll dedicate to taking Blue to it's safe limit and do some comparisons with Blue Dot.

[RustyRudder]

Here's a video of imr blue in shotguns.https://www.youtube.com/watch?v=i7hNjf-D7ec

[Benchrst]

A few tests, can be seen here:

http://10mm-reloaded.com/load_data/10mmLoadResults06-07-17.html

Slowly climbing with IMR Blue, and the link above has a single comparison with Blue Dot (180gr GD, LOW load for BD).


With IMR Blue I ran into some odd numbers. Either the sunlight caused the chrono (was using an infrared light kit) to get funky for these two groups or I hit a weird node. The latter seems unlikely as the 180gr bullet velocity increases with each shot, and decreases with 155gr bullet.

Data in image below not included in link above.