10mm carbine/rifle load

[BEEMER!]

Quote

"The 10mm, lacks enough space, to put enough of this powder inside to ring out the velocity, but using longer barrels may take advantage of what potential is there."

I agree with this, but you still aren't getting enough pressure to make those powders do what they are designed for.  You just aren't blowing a whole bunch out the barrel end like you do with the magnums.

I hope it works for him.

[drsjr1969]

Is there a available capacity calculator to determine how much room is left for powder with different bullet gr wt? Just trying to figure out mostly on the 220 gr that I just ordered. don't have one to measure yet but was wondering if there was a program online or a formula to use.

thanks,

[drsjr1969]

200 and 220's arrived.

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[drsjr1969]

well my expectations were surpassed today testing the 200 gr bullet for the first time. The H110 powder pushed the 200 gr the same and faster than 180 gr in most cases with the equal amounts of powder. This also made the energy increase greatly.

Ran 2 tests with different primers everything else was the same : 200gr RNFP, H110 powder 13.0 - 13.4gr, 1.255 COL and mixed once fired brass. MECH TECH 16 INCH BARREL

Winchester WLP
13.0gr - 1270.3 FPS @ 717 FT LBS
13.2gr - 1311.7 FPS @ 764 FT LBS
13.4gr - 1337.3 FPS @ 794 FT LBS

Federal Magnum #155
13.0gr - 1306.6 FPS @ 758 FT LBS
13.2gr - 1322.9 FPS @ 777 FT LBS
13.4gr - 1329.5 FPS @ 785 FT LBS

Next is the 220 gr

[The_Shadow]

Thanks for the data results, I'd bet the pressure is still fairly low with those as well.

[drsjr1969]

Just a quick note while I still calculate. The 220gr outperformed the 200gr with less powder as I suspected.

1295.3 FPS @ 820 FT LBS

more later

[drsjr1969]

Ok so here are the details started with 12.3 and worked up to 12.9 of H110. Had a new primer to try out the Remington 2 1/2 so loaded up those as well as WLP. 220gr bullet from xtreme and mixed once fired brass. MECH TECH 16 INCH BARREL

12.3gr rem2.5 - 1224.3 FPS @ 732 FT LBS
12.3gr WLP - 1226.8 FPS @ 735 FT LBS

12.5gr rem2.5 - 1223.5 FPS @ 731 FT LBS
12.5 gr WLP - 1256.8 FPS @ 772 FT LBS

12.7gr rem2.5 - 1248.8 FPS @ 762 FT LBS
12.7gr WLP - 1279.5 FPS @ 800 FT LBS

12.9gr rem2.5 - 1290.0 FPS @ 813 FT LBS ....... ONE SHOT IN 6 INCH BARREL 1064 FPS@553 FT LBS
12.9gr WLP - 1295.3 FPS @ 820 FT LBS ........ ONE SHOT IN 6 INCH BARREL 1073 FPS@563 FT LBS

Other info on different load tested
Unique 7.9gr WLP primer 180gr bullet
4.6 inch barrel - 1130.2 FPS @ 511 FT LBS
6.0 inch barrel - 1244.0 FPS @ 619 FT LBS
16 inch barrel - 1374.8 FPS @ 756 FT LBS

[The_Shadow]

The Remington 2 1/2 LPP's are good to go.  Glad to see the comparison of the H-110 in the 16 BBL carbine vs the 6" BBL.

Thanks for the great load data and results. 

[Yondering]

Interesting experiment. It does illustrate what some of us already knew, that H110 is too slow and too bulky to produce good velocity in the 10mm. You simply can't get enough powder in the case. Those 16" loads would be good numbers if they were from a pistol barrel, but are a pretty slow for a carbine.

I second the suggestion to use Longshot or AA9. I don't think you'll find any other powders that give better results with heavy bullets, regardless of barrel length. FWIW, with AA9, I'm getting higher numbers from my 6.6" barrel than your 16" H110 results.

With a good bullet design, AA9 has about the perfect combination of bulk and burn rate for 10mm heavy bullet loads. It usually reaches max pressure right about the point where it's slightly compressed.

[The_Shadow]

Here is a website that has some useful info for various barrel lengths and the velocity as tested...

http://www.ballisticsbytheinch.com/10mm.html

[drsjr1969]

Here is a website that has some useful info for various barrel lengths and the velocity as tested...

http://www.ballisticsbytheinch.com/10mm.html

This data is good if your using the same powder and bullet weight as the ones tested. When I try to match up what I got from a 6 inch and then 16 inch I got much larger increases than the chart shows.

I have in my stock now LONGSHOT AND BLUE DOT so it's only a matter of time before I continue, however I'm sure the velocities will exceed the plated bullets limit so I'm stuck at the moment.

[DenStinett]

I've been loading 9.3 gr of AA#5 behind a 165 gr Xtreme RNFP, in Win Brass, with a Win Primer, at an OAL of 1.246"
Now that I've massaged the Glock Block, I'm running them (approx) 99.7% thru my MG20 with maybe a 1:400 fail to feed





(sorry for the poor Cell Phone Pics)

[drsjr1969]

Do you have any idea how fast your pushing those plated bullets? 1500+ FPS? I have hesitated to continue using them because I would be pushing them past 1400 FPS which is beyond recommended velocity. I do have some PMC 200gr jacketed but not that many.

[DenStinett]

Sorry, I don't have a Chronograph, so I don't know the pfs
I will e-mail the Tech at Accurate Powder and ask what he feels it my be
I'll post their response.....

[DenStinett]

Here's the response I received from the Powder Guru at Accurate:

Den,
You should have a projected velocity of around 1503 FPS and a max pressure of 26967 psi.

Don W.
CSR  Western Powders
406-234-0422

Thought it was getting up to 1500, but not over
I'd love to run them thru a Crono myself

All I know is; they hit the Gone pretty hard out at 100 yrds