Got Some 22DTi/6mmDTi/25DTi/6.5DTI Data Post Here

venatic

venatic

Active member
I have had several requests from members to start a sticky post so folks can quickly access reloading data for the various DTI calibers that Mike Milli/AKA DTech of Dedicated Technology custom builds.
Please Read:
Note that while this data was hopefully safe in the gun that it was developed it may not be in your particular gun so follow the usual protocol of starting low and work from there.

I think the following information would be helpful:

Caliber
Bullet type
Case brand
Primer brand/type
Powder/Charge weight
OAL
Barrel rate of twist
Velocity
Notes of accuracy/group sizes

Thanks,
David Stroud
Venatic
 
Here are my two best loads for my 6DTI. Accuracy is great with both of these loads. No signs of pressure in my rifle.

Upper is 6mmDTI, 22" barrel with 10 twist.
I load both of these to 2.275 in PRI mags.

SSA brass
Rem 7.5 primer
Case trim length 1.675
Bullet Sierra 75 Hollow Point
Powder H4895
Charge Weight 29.8



SSA brass
Rem 7.5 primer
Case trim length 1.675
Bullet Sierra 70 Blitz King
Powder H4895
Charge Weight 30.8
 
Loads for .25 DTI
18" Shilen Select, 1:10" twist

ALL LOADS ARE WITH MOLY COATED BOOLITS!
Subtract 10% for naked, to be safe

All LOADS using formed SSA BRASS and REM 7 1/2 primers

85gr Nosler B-tip 2.250" c.o.a.l.

TAC Powder

charge------fps
30.0--------2745
30.3--------2764
30.6--------2798
30.9--------2801
31.2--------2841
31.5--------2868 (no pressure signs)

87gr Sierra Varminter c.o.a.l. 2.250"

TAC Powder

charge-------fps
31.2---------2768
31.5---------2789
31.8---------2834
32.1---------2862
32.4---------2934 (max)


H4895 Powder
30.6--------2795
30.9--------2829
31.2--------2871
31.5--------2900
31.8--------2921 (max)


90 gr Sierra Gameking 2.210" c.o.a.l.

H4895 Powder

charge-------fps
30.4---------2867
30.7---------2905
31.0---------2933
31.3---------2961 (max) (*THIS IS MY DEER LOAD*)
31.6---------2974

H322 powder

28.4---------2807
28.7---------2820
29.0---------2837
29.3---------2888
29.6---------2908 (max)

TAC powder

30.7---------2814
31.0---------2828
31.3---------2848
31.6---------2924
31.9---------2960 (max)

100gr Nosler B-tip 2.260" c.o.a.l.

TAC Powder

29.3---------2589
29.6---------2630
29.9---------2653
30.2---------2672
30.5---------2702 (max)

Similar results with 100gr TSX.
Stopped testing, .25DTI too slow with 100grainers. Abandoned in favor of 90gr Sierras for deer load.


25DTIloads005.jpg

deer2011030.jpg



Still have a few more to add, but that's a start...
 
I will start with some 22Dti.

22DTi
40gr Barnes
SSA brass
Rem 7 1/2
AA2015 @ 28.0 gr
2.175 AOL
22 inch 1/10 twist Shilen
3820fps
Moderate load accurate


22DTi
50gr Speer TNT
SSA brass
CCI 400
IMR4198 @ 24.5gr
2.160 AOL
22" 1/10 Shilen
3401fps
.75-1 MOA mild load


22DTi
52gr Hornady HP
SSA brass
CCI 400
N133 @ 27.3
2.160 AOL
22" 1/10 Shilen
3481fps
5 shots .458


22DTi
60gr Berger Varmint HP
SSA brass
Rem 7 1/2
XBR8208 @ 28.0gr
2.285 AOL
22" 1/10 Shilen
3352fps
Gun loved these bullets all powders tried shot great!
Killed 4 Feral hogs in 4 shots one afternoon.


22DTi
60gr Berger varmint HP
SSA brass
Rem 7 1/2
H335 @ 28.3gr
2.285
22" 1/10 Shilen
3276fps
Mild load very accurate!
 
KnockEm, stats on that deer and distance of shot? That's a fine deer for NY. My family has hunted Western NY all my/their life and only ever shot a couple that even could be talked about in the same conversation as that one.


The results for the 90gr Gamekings are promising, anyone tried a flat based bullet in that weight range? Only one that comes to mind is the 87gr Speer Hot-Cor. Curious if anyones gotten them over 3000 fps.
 
A little 25DTi Data
This first load shot so well I did not do much experimenting as I am waiting on a Suppressor for this gun and will work more if needed once it arrives.


25DTi
87gr Sierra SP
SSA brass
Rem 7 1/2
N133 @ 29.7gr
2.270 AOL
18" 1/10 Shilen
2969fps
1st 5 shot group .294
2nd 5 shot group .591
Same load with Hornady 87gr shot 1.1 inches


25DTi
85gr Nosler BT
SSA brass
Rem 7 1/2
N133 @ 28.5gr
2.315 AOL
18" 1/10 Shilen
2904fps
Shot 3 5 shot groups .448/.577/.602 more speed possible
 
Last edited:
25 DTI - my deer load

25 DTI
100 grain sierra gameking
SSA Case
Remington 7 1/2 primerWinchester Small Rifle
32.0 grains of Hodgdon Leverevolution powder
2.26 inches oal
18 inch 1/10 twist. Shilen match
2800 fps
Sub MOA.

NOTES: You can use the Sierra 100 grain prohunter with the same OAL. Velocity will be slighly less due to more bearing surface of the bullet.

My bullet of choice is the Swift 100 grain A-Frame. Seated to 2.3 inches the velocity was about 2750 fps. Very accurate.

All other 100 grain bullets need to be seated deep in the case and the powder charges adjusted accordingly. The seating depths of the bullets I mentioned above are all about the same.

CAUTION: The port pressure on a mid-length barrel setup will be higher than most other powders (using the leverevolution). I used a Tubbs buffer system to slow up the unlocking time and eliminated any swipes that I had. I am considering installing a MGI adjustable gas tube. Also, my buffer weighs 5.0 oz (carbine)
 
Last edited:
Originally Posted By: ShoesThe results for the 90gr Gamekings are promising, anyone tried a flat based bullet in that weight range? Only one that comes to mind is the 87gr Speer Hot-Cor. Curious if anyones gotten them over 3000 fps.

With all of the test-firing I do around the shop, I pick up blems and close-outs whenever I can. Back a few years ago, Midway had a deal on .257 Cal. 90 Grain hollow-point flat-base bullets. They were made for Federal to use in their "Federal Premium" ammunition. I picked up 500 of them or so to use for testing the .25 WSSM's, but when I came out with the .25 DTI, they became pure magic! They are not only VERY accurate, but they are short enough to get me 3000 FPS out of an 18" barrel! As you load for rifles where magazine length is your COL deciding factor, you will quickly see what short bullets will do for you.

The first deer killed in the world with a .25 DTI was taken with that bullet. If you ever see them available, pick up as many of them as you can!
 
Thanks for the reply Mike. I recall you mentioning this. I was wondering if anyone had similar luck with a more readily available bullet. Seems like it would be very doable.
 
While I was working with different bullets for the .25 DTI, I noticed something interesting. If you compare the Sierra 100 grain spitzer to the 90 grain HP flat-base, they are identical but for 10 grains and the little lead point. It's surprising how much that little added length costs you...
 
Mike -- although I found that the bullet seating depth (amount of bullet in the case) is nearly the same for both bullets. The 90 grain gameking is 2.19 OAL and the 100 grain gameking is 2.26. That .07 inches as you say is the lead tip. I sure would like to be able to seat those 90 grain pills to 2.30 inches.
 
I have quite a bit of 6mmDTi data so I may add a little here and there.My typing ability is dismal so this takes me a while. My Dtech has a 22 inch barrel with a 1/12 Twist.

6mmDTi
80gr Sierra Blitz
SSA brass
CCI BR4
n530 @ 29.2gr
AOL 2.290
3268fps
Fireforming brass load shot MOA warm load

6mmDTi
80gr Sierra Blitz
SSA brass
CCI 450
TAC @ 30.2
AOL 2.290
3009fps
Very Accurate 1/2 MOA at 100 and 200yards

6mmDTI
75gr VMax
SSA brass
Rem 7 1/12
N530 @ 28.8gr
AOL 2.290
3276 fps
Used this load for most of 2010 season for coyotes/Accurate

6mmDTi
75gr VMax
SSA brass
Rem 7 1/2
N135 @ 28.5gr
AOL 2.290
3122 fps
5 shots .855

6mmDTi
70gr Nosler BT
SSA brass
CCI 450
N133 @ 28.8gr
AOL 2.290
3236 fps
Shot great two groups under .500

6mmDTi
70gr Nosler BT
SSA brass
CCI 450
H335 @ 30.4gr
AOL 2.290
3220 fps
1st 5 shots at.245 on 1-19-11 so I loaded 30 more and used them for egg shoot on PM hunt and finished the season with this load.

6mmDTi
70gr Nosler BT
SSA brass
Rem 7 1/2
AA2520 @ 31.8
3205 fps
Accurate

I skipped to the back page of my data to put this load in as it's a good one with a new powder.

6mmDTi
70gr Nosler BT
SSA Brass
Rem 7 1/2
CFE223 @ 32.5gr
3220fps
6 shot group .635
5 shot group .340

6mmDTi
70gr Nosler BT
SSa Brass
Rem 7 1/2
IMR3031 @ 30.1gr
3333 fps
My current load good speed and quite accurate but fills the case to the top so use a drop tube.

6mmDTi
75gr VMax
SSA brass
Rem 7 1/2
AR Comp @ 30.5gr
3220fps
Very consistent low ES shot very well

6mmDTi
75gr Hornady HP
SSA brass
Rem 7 1/2
H4895 @ 29.5gr
3137fps
6 shot group @ .740

6mmDTi
55gr Nosler Kangaroo "SHOTS"
SSA brass
Rem 7 1/2
AA2015 @30.5 gr
3518fps
These shoot pretty well from my 6DTI hovering around 1/2 MOA and this is the load I fireformed my last 50 pieces of brass with while using for hunting.
I have loaded them to 31.0 with no problem and speed was 3623fps.

6mmDTi
55gr Nosler Kangaroo "SHOTS"
SSA Brass
CCI BR4
H335 @ 33.5gr
3652fps
Shot OK under 3/4 MOA

6mmDTi
55gr Kangaroo "SHOTS"
SSA brass
CCI BR4
XBR8208 @ 33.0gr
3410fps
low ES shot good

6mmDTi
60gr Sierra HP
SSA brass
CCI BR4
XTerminator @ 30.5gr
3463fps
Shot very well two 6 shot groups .388 & .559





 
Last edited:
Disappointed by my most recent chrono session. I tried CCI#41 primers, 31.5 grains of H322, and a 70 grain BK. Velocity was only 3060 but vel was very uniform!! Looking at the case head, saw some smears so probably cannot go any higher.
100 grain Hornady spitzer, 32 grains LR, and CCI#41 primer, got me average of 2707 with some smears. The primers are difficult to seat so they flatten some before firing, they still appear to be right at the stopping point.
Was going to try some more but rain appeared.
My velocities at an earlier session was higher for some reason but with 7 1/2 primers. Will revisit this again
 
Back
Top