DRT Terminal Shock Load Data

[WI-Carcosa]

Update on a 6.5 loading. I am not able to reload at my current place, so I am using a few custom shops and my uncle does some reloading for me. This one is from Hendershots and I had them work up a load for the 6.5x55 Swede in a Tikka T3 19” barrel with Banish Backcountry suppressor. They do a nice job, but with the Swede and lack of modern book values, most loads are pretty anemic.
2.95” COAL
135 DRT terminal shock
Lapua brass
N560- They did not share grains of power used, but I weighed components and came out with 48grains minus primer which I estimate at 2.5-4 grains. Guesstimating around 45g or so of powder.
2694.6 fps average, ES 52.9, Stdev 15.3
The load shot fine but my shooting today was terrible. VV SKAN loading table below.

I will be working up a 135g round with my uncle with 555 hoping to be north of 2800 with a bit better ES and stdev.

Shot a 10 round group of this pretty quickly to see how it would perform. Grouped very well with 2680avg fps, 60 es, 27std dev. This bullet shoots great in my T3 6.5 Swede, I’m pumped. I am hoping the n555 shoots well and I can get a bit more velocity out of it. I am really hoping to hit 2750 with a 19” barrel.

 

[cubdriver84d]

Updated the original post with some more 6 creed data. I've settled on 42.7gr of H4350 giving me right around 3000fps with a terrible es. It still doesn't shoot great at 100 yards (best 10 shot group has been 1.9") but it seems to tighten up at longer ranges (4.5"ish at 330yd). Good enough for now.

 

[philcox]

Anyone have experience with the 135 DRT in 6.5CM and the following powders? I am back fiddling and want to see if anyone has results with the following:

• StaBall 6.5
• N555
• N560

 

[z987k]

Anyone have experience with the 135 DRT in 6.5CM and the following powders? I am back fiddling and want to see if anyone has results with the following:

• StaBall 6.5
• N555
• N560

I think 555 and 560 will be too slow. I'm going to play with the 135 in 6.5cm here soon. 550 and rl17 will be what I start with.
Stable will probably be good. For those 3 powders I'd start there.

 

[SouthPaw]

20" 22 Creedmoor
79g DRT
Alpha SRP/cci450
H4831sc
3200fps

 

[z987k]

20" 22 Creedmoor
79g DRT
Alpha SRP/cci450
H4831sc
3200fps

View attachment 742873

I'd love to see some necropsies with that bullet.

 

[SouthPaw]

I'd love to see some necropsies with that bullet.

See here: Post in thread '.223 for bear, mountain goat, deer, elk, and moose.' https://rokslide.com/forums/threads...n-goat-deer-elk-and-moose.130488/post-3565949

 

[cubdriver84d]

See here: Post in thread '.223 for bear, mountain goat, deer, elk, and moose.' https://rokslide.com/forums/threads...n-goat-deer-elk-and-moose.130488/post-3565949

I wanted to do a 22 creed specifically to shoot that bullet but hunt in Colorado a lot so 6 creed it was. Been bugging DRT about a new 6mm bullet.

 

[z987k]

I wanted to do a 22 creed specifically to shoot that bullet but hunt in Colorado a lot so 6 creed it was. Been bugging DRT about a new 6mm bullet.

Ya, their 24cal bullet is lacking in the BC department compared to the 22 and 26.

 

[cubdriver84d]

Ya, their 24cal bullet is lacking in the BC department compared to the 22 and 26.

Yeah I’ve been debating using my 6.5prc instead for that reason but I think I’ve decided the 6 creed with 4mph wind bracket (to 500yd) that I can spot shots easily with is still better than the 5mph wind bracket of the 6.5 and not being able to spot shots.

 

[WI-Carcosa]

I wanted to do a 22 creed specifically to shoot that bullet but hunt in Colorado a lot so 6 creed it was. Been bugging DRT about a new 6mm bullet.

Has DRT been receptive or let on about any new bullets in the works?

 

[cubdriver84d]

Has DRT been receptive or let on about any new bullets in the works?

I shared the 6mm thread on here with them and suggested a new 6mm bullet would likely be quite popular. They thanked me for bringing it to their attention but that’s it. I’ve gotten the impression a lot if not most of their business is with military contracts, so I’m not super optimistic we’ll see many new developments geared toward the hunting industry. Maybe that will change as folks start seeing more terminal performance results and demand increases but we’ll see.

 

[z987k]

Yeah I’ve been debating using my 6.5prc instead for that reason but I think I’ve decided the 6 creed with 4mph wind bracket (to 500yd) that I can spot shots easily with is still better than the 5mph wind bracket of the 6.5 and not being able to spot shots.

Have you got them to offer shipping in the usps flat rate boxes? I've ordered from them a number of times and shipping up here is about the most I've ever paid to ship bullets.
I e-mailed them about it twice but they don't respond.

 

[cubdriver84d]

Have you got them to offer shipping in the usps flat rate boxes? I've ordered from them a number of times and shipping up here is about the most I've ever paid to ship bullets.
I e-mailed them about it twice but they don't respond.

Yeah I think I had to call them though, at least the first time. For some reason I remember a usps option showing up online when I ordered earlier this year but could be wrong.

 

[WI-Carcosa]

I shared the 6mm thread on here with them and suggested a new 6mm bullet would likely be quite popular. They thanked me for bringing it to their attention but that’s it. I’ve gotten the impression a lot if not most of their business is with military contracts, so I’m not super optimistic we’ll see many new developments geared toward the hunting industry. Maybe that will change as folks start seeing more terminal performance results and demand increases but we’ll see.

I appreciate the reply! I will do my best to get some results this fall on a few calibers. I can’t wait until we can pull together a decent “DRT results on game thread.”

 

[Ens Entium]

Anyone have experience with the 79 gr in a slower twist 1:9 223? Feel like it would be on the border of stabilizing.

 

[philcox]

called DRT, they said COAL for 135 in 6.5CM is 2.775. That means the BT is in the neck (pic 1). That OK? Should it be seated lower like the 2nd picture?

 

[willfrye027]

called DRT, they said COAL for 135 in 6.5CM is 2.775. That means the BT is in the neck (pic 1). That OK? Should it be seated lower like the 2nd picture?
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Personally the second one looks “better” to me.

Also I’d try n555 first, that’s one of my favorite powders in the creedmoor case. I’d start around 40gr and go up from there, it’s pretty close to h4350 usually requiring about a grain more powder for the same velocity, but usually able to get another 50-100fps of velocity over h4350 in my rifles.

 

[Jason Snyder]

That OK?

I’d be a little nervous with that little bullet in the neck. I’ve always tried to have the bullet seated to caliber depth. Ie .243 is seated .243 deep into the neck.

 

[cubdriver84d]

called DRT, they said COAL for 135 in 6.5CM is 2.775. That means the BT is in the neck (pic 1). That OK? Should it be seated lower like the 2nd picture?
View attachment 745347


View attachment 745348

Their factory loads look like your first pic. That's about how deep I have them seated in my prc loads too. Haven't had any issues but probably couldn't hurt seating them a little deeper.