New Dominion Smokeless Powders

looking forward to testing D4198 in a couple bolt action 223's. Would be interested in a D4895 for 308
 
Just reloaded some D4198, runs fine through my Lee drum powder drop. The granules are very short and some residual ground up powder in tub

Will be testing 17gr of 4198 in middy 16" tomorrow with 55gr campro and dominion primer
 
Has anyone tried running the D4198 in a Tavor w/55 gr campro?

Because the D4198 is so fast, the gas pressure is much lower towards the end the barrel compared to slower powders. I had mixed results on my Mid-length AR's. 21.0-21.5gr of D4198 & Campro 55gr cycled fine in an 18" mid-length even with an H3 buffer. However, the same loads would NOT cycle in 14.5 mid-length with a carbine buffer. The longer 18" barrel increases the duration of pressure at the gas block and allows enough gas through to cycle the action.

You should be fine with the 18.5" barrel, I think the Tavor gas port position is similar to a carbine length AR so there should be plenty of gas to cycle the action.
 
Because the D4198 is so fast, the gas pressure is much lower towards the end the barrel compared to slower powders. I had mixed results on my Mid-length AR's. 21.0-21.5gr of D4198 & Campro 55gr cycled fine in an 18" mid-length even with an H3 buffer. However, the same loads would NOT cycle in 14.5 mid-length with a carbine buffer. The longer 18" barrel increases the duration of pressure at the gas block and allows enough gas through to cycle the action.

You should be fine with the 18.5" barrel, I think the Tavor gas port position is similar to a carbine length AR so there should be plenty of gas to cycle the action.

Thanks for the feedback. I'd love to hear from someone who's successfully run it before taking the plunge, but any feedback is appreciated.
 
some Doppler radar data from my 16.1" Ruger Scout bolt action, 16.1" barrel with the 55gr Hornady SP w/c


55gr Hornady SP @ 2.283” (.030” off lands)
Base to ogive = 1.944”
Dominion primer
Hornady brass

D4198
22.5 – 2992
22.3 – 2968
22.1 – 2996
21.9 – 2907
21.7 – 2865
21.4 – 2859
21.2 – 2822
21.0 – 2787
20.8 – 2742
20.5 – 2721
20.2 – 2736
20.0 – 2682
19.8 – 2634
19.6 – 2630
19.4 – 2600
19.2 – 2561
19.0 – 2560
18.7 – 2515
18.5 – 2505
18.2 – 2486

I am going to play around in the 21.1 to 21.9gr range and see where the accuracy node is
 
17gr of D4198 + 55gr campro + Dominion primer short cycled on my 16" middy AR. Bolt does not lock back and does not catch next round.
Will be testing 18gr and 19gr next.
 
18252919_1642412312453375_5668873848762662912_n.jpg


top L 21.1grs, mid L 21.5grs, bottom L 21.3grs, R lower 21.7grs, R higher 21.9grs. 100y from Ruger m77 Scout 16.1"

55gr Hornady SP w/c @ 2.283" OAL (.030" off lands), Hornady brass, Dominion primer

Doppler results from 21.7grs

Code:
[TABLE="width: 1088"]
[TR]
[TD]Stats - Average[/TD]
[TD="align: right"]2849.55[/TD]
[TD]fps[/TD]
[TD="colspan: 2"][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[/TR]
[TR]
[TD]Stats - Highest[/TD]
[TD="align: right"]2868.97[/TD]
[TD]fps[/TD]
[TD="colspan: 2"][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[/TR]
[TR]
[TD]Stats - Lowest[/TD]
[TD="align: right"]2833.64[/TD]
[TD]fps[/TD]
[TD="colspan: 2"][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[/TR]
[TR]
[TD]Stats - Ext. Spread[/TD]
[TD="align: right"]35.33[/TD]
[TD]fps[/TD]
[TD="colspan: 2"][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[/TR]
[TR]
[TD]Stats - Std. Dev[/TD]
[TD="align: right"]17.93[/TD]
[TD]fps[/TD]
[TD="colspan: 2"][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[/TR]
[TR]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[/TR]
[TR]
[TD]Shot ID[/TD]
[TD]V0[/TD]
[TD]V50[/TD]
[TD]V100[/TD]
[TD]V150[/TD]
[TD]V200[/TD]
[TD]V250[/TD]
[TD]Ke0[/TD]
[TD]Ke50[/TD]
[TD]Ke100[/TD]
[TD]Ke150[/TD]
[TD]Ke200[/TD]
[TD]Ke250[/TD]
[TD]PF50[/TD]
[TD]Proj. Weight[/TD]
[TD]Date[/TD]
[TD]Time[/TD]
[/TR]
[TR]
[TD="align: right"]1[/TD]
[TD="align: right"]2869[/TD]
[TD="align: right"]2679[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]1005[/TD]
[TD="align: right"]876[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]147.35[/TD]
[TD="align: right"]55[/TD]
[TD="align: right"]5/05/17[/TD]
[TD="align: right"]14:45:02[/TD]
[/TR]
[TR]
[TD="align: right"]2[/TD]
[TD="align: right"]2834[/TD]
[TD="align: right"]2643[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]980[/TD]
[TD="align: right"]852[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]145.37[/TD]
[TD="align: right"]55[/TD]
[TD="align: right"]5/05/17[/TD]
[TD="align: right"]14:45:16[/TD]
[/TR]
[TR]
[TD="align: right"]3[/TD]
[TD="align: right"]2846[/TD]
[TD="align: right"]2651[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]989[/TD]
[TD="align: right"]858[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]145.8[/TD]
[TD="align: right"]55[/TD]
[TD="align: right"]5/05/17[/TD]
[TD="align: right"]14:45:29[/TD]
[/TR]
[/TABLE]

to compare, Aguila 55gr FMJ ammo does 2878 fps, and Hornady 55gr SP ammo does 2873 fps
 
18252919_1642412312453375_5668873848762662912_n.jpg


top L 21.1grs, mid L 21.5grs, bottom L 21.3grs, R lower 21.7grs, R higher 21.9grs. 100y from Ruger m77 Scout 16.1"

55gr Hornady SP w/c @ 2.283" OAL (.030" off lands), Hornady brass, Dominion primer

Doppler results from 21.7grs

Code:
[TABLE="width: 1088"]
[TR]
[TD]Stats - Average[/TD]
[TD="align: right"]2849.55[/TD]
[TD]fps[/TD]
[TD="colspan: 2"][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[/TR]
[TR]
[TD]Stats - Highest[/TD]
[TD="align: right"]2868.97[/TD]
[TD]fps[/TD]
[TD="colspan: 2"][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[/TR]
[TR]
[TD]Stats - Lowest[/TD]
[TD="align: right"]2833.64[/TD]
[TD]fps[/TD]
[TD="colspan: 2"][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[/TR]
[TR]
[TD]Stats - Ext. Spread[/TD]
[TD="align: right"]35.33[/TD]
[TD]fps[/TD]
[TD="colspan: 2"][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[/TR]
[TR]
[TD]Stats - Std. Dev[/TD]
[TD="align: right"]17.93[/TD]
[TD]fps[/TD]
[TD="colspan: 2"][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[/TR]
[TR]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[/TR]
[TR]
[TD]Shot ID[/TD]
[TD]V0[/TD]
[TD]V50[/TD]
[TD]V100[/TD]
[TD]V150[/TD]
[TD]V200[/TD]
[TD]V250[/TD]
[TD]Ke0[/TD]
[TD]Ke50[/TD]
[TD]Ke100[/TD]
[TD]Ke150[/TD]
[TD]Ke200[/TD]
[TD]Ke250[/TD]
[TD]PF50[/TD]
[TD]Proj. Weight[/TD]
[TD]Date[/TD]
[TD]Time[/TD]
[/TR]
[TR]
[TD="align: right"]1[/TD]
[TD="align: right"]2869[/TD]
[TD="align: right"]2679[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]1005[/TD]
[TD="align: right"]876[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]147.35[/TD]
[TD="align: right"]55[/TD]
[TD="align: right"]5/05/17[/TD]
[TD="align: right"]14:45:02[/TD]
[/TR]
[TR]
[TD="align: right"]2[/TD]
[TD="align: right"]2834[/TD]
[TD="align: right"]2643[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]980[/TD]
[TD="align: right"]852[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]145.37[/TD]
[TD="align: right"]55[/TD]
[TD="align: right"]5/05/17[/TD]
[TD="align: right"]14:45:16[/TD]
[/TR]
[TR]
[TD="align: right"]3[/TD]
[TD="align: right"]2846[/TD]
[TD="align: right"]2651[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]989[/TD]
[TD="align: right"]858[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]145.8[/TD]
[TD="align: right"]55[/TD]
[TD="align: right"]5/05/17[/TD]
[TD="align: right"]14:45:29[/TD]
[/TR]
[/TABLE]

to compare, Aguila 55gr FMJ ammo does 2878 fps, and Hornady 55gr SP ammo does 2873 fps

Thanks very much for the info!!
 
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