I recently loaded the 115g dtac for my 243win with 41.7g h4350 with federal match primers and my chronograph is reading 2826 fps...I was told that people were getting speeds of 3000fps with this...weather was 60 degrees out with a strong fog or dew that was kinda sprinkling.. would this kind of weather make that much difference in speed? I am already getting nice shiny extractor marks so I don't think I could jump it up to what some people are claiming to shoot 42g or more..
- Thread starter raythemanroe
- Start date
Re: 115g dtac fps
barrel length?
barrel length?
Re: 115g dtac fps
I'm using a 27" Hart..Nosler casings...
I'm using a 27" Hart..Nosler casings...
Re: 115g dtac fps
Rob01 that sounds about right.. these are naked loads...
Rob01 that sounds about right.. these are naked loads...
Re: 115g dtac fps
Temp9 I jumping about 2 thou..Most are using coated bullets so I'm guessing that's the pressure difference but would the speed be that much different?
Temp9 I jumping about 2 thou..Most are using coated bullets so I'm guessing that's the pressure difference but would the speed be that much different?
Re: 115g dtac fps
Lofty are they coated? cause there is noway for me if i'm already showing signs of pressure right?I would like 3000 but mid to high 2900 would be fine..
Lofty are they coated? cause there is noway for me if i'm already showing signs of pressure right?I would like 3000 but mid to high 2900 would be fine..
Re: 115g dtac fps
I have a follow up question
does the bn coated bullets have fowling problems? cause I have read that with moly..
I have a follow up question
does the bn coated bullets have fowling problems? cause I have read that with moly..Re: 115g dtac fps
Hey guys, What is your cartridge over all length with the Dtac? I am trying to see if my throat is long enough. Right now with a Sierra 107 it is 2.765" to touch the lands.
Hey guys, What is your cartridge over all length with the Dtac? I am trying to see if my throat is long enough. Right now with a Sierra 107 it is 2.765" to touch the lands.
Re: 115g dtac fps
Couldn't tell you OAL. To the Ogive mine are 3.186". I jump them .02".
I shoot BN coated bullets. I basically copy what Rob does - with respect to .243 loading ONLY
I'm shooting 3040fps. But that is a fireforming load in a 243 Ackley Improved. I can see how a regular 243 might not like the pressure. But it shoots great, and forms the cases nicely.
hope that helps
Couldn't tell you OAL. To the Ogive mine are 3.186". I jump them .02".
I shoot BN coated bullets. I basically copy what Rob does - with respect to .243 loading ONLY
I'm shooting 3040fps. But that is a fireforming load in a 243 Ackley Improved. I can see how a regular 243 might not like the pressure. But it shoots great, and forms the cases nicely.
hope that helps
Re: 115g dtac fps
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: raythemanroe</div><div class="ubbcode-body">Lofty are they coated? cause there is noway for me if i'm already showing signs of pressure right?I would like 3000 but mid to high 2900 would be fine..
</div></div>
Nope, not coated.
I had the same problem a few weeks back. Getting real pressure signs at only 40 grains of H4350 and only getting 2860 FPS.
Opened a new bottle of powder from a different lot and bingo, problem fixed.
Here's the thread in the reloading section I discussed it.
http://www.snipershide.com/forum/ubbthre...259#Post3570259
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: raythemanroe</div><div class="ubbcode-body">Lofty are they coated? cause there is noway for me if i'm already showing signs of pressure right?I would like 3000 but mid to high 2900 would be fine..
</div></div>
Nope, not coated.
I had the same problem a few weeks back. Getting real pressure signs at only 40 grains of H4350 and only getting 2860 FPS.
Opened a new bottle of powder from a different lot and bingo, problem fixed.
Here's the thread in the reloading section I discussed it.
http://www.snipershide.com/forum/ubbthre...259#Post3570259
Re: 115g dtac fps
I guess it's not truly fitting being that this thread is about h4350, but I was able to get 3115 out of my 28" barrel using BN DTACS and RL-25. On the edge of pressure but my bolt lifts weren't sticky and my primer pockets were not loose.
I guess it's not truly fitting being that this thread is about h4350, but I was able to get 3115 out of my 28" barrel using BN DTACS and RL-25. On the edge of pressure but my bolt lifts weren't sticky and my primer pockets were not loose.
Re: 115g dtac fps
In your other thread you said you tried 4350 was that the IMR variant? I have had good luck with IMR 4350 My groups today were just over quarter inch size, not bad for me..That was using h4350 today...RL-25 is one a lot of people use..
In your other thread you said you tried 4350 was that the IMR variant? I have had good luck with IMR 4350
My groups today were just over quarter inch size, not bad for me..That was using h4350 today...RL-25 is one a lot of people use..Re: 115g dtac fps
It's was H4350.
I tried RL25 and wasn't having any problems, just couldn't get the velocity out of it. I got up to 47 grains with no bolt lift issues, no primer flow.....but 47 grains just seemed like a lot to only get 2950 FPS.
It's was H4350.
I tried RL25 and wasn't having any problems, just couldn't get the velocity out of it. I got up to 47 grains with no bolt lift issues, no primer flow.....but 47 grains just seemed like a lot to only get 2950 FPS.
Re: 115g dtac fps
I have not ran DTACs or even a 243, but I do know that chronographs are sensitive to lighting conditions. If the results sound not quite right I would suspect t the chrono first.
I have not ran DTACs or even a 243, but I do know that chronographs are sensitive to lighting conditions. If the results sound not quite right I would suspect t the chrono first.
Re: 115g dtac fps
You may be on to something there cause it was cloudy out with poor lighting...usually it will read error before it shows a false reading but I'll bring it to the range today to double check..I can tell you they hit higher then my 107 smk load which read much faster..
You may be on to something there cause it was cloudy out with poor lighting...usually it will read error before it shows a false reading but I'll bring it to the range today to double check..I can tell you they hit higher then my 107 smk load which read much faster..
Re: 115g dtac fps
I am running 41.2grns of H4350. Been getting 2875fps out of a 25 inch, 7.7 twist Bartlein barrel with a bare bullet. Shoots great, I assume this is the low node, but I am happy with it
I am running 41.2grns of H4350. Been getting 2875fps out of a 25 inch, 7.7 twist Bartlein barrel with a bare bullet. Shoots great, I assume this is the low node, but I am happy with it
Re: 115g dtac fps
That sounds realistic..I'm gonna try different things like casings and powders but if anybody knows what casings are faster please howler..
That sounds realistic..I'm gonna try different things like casings and powders but if anybody knows what casings are faster please howler..
Re: 115g dtac fps
Win brass br2 coated DTAC with 41.7 H4350 and I am 3100 with my 28.5" Rock Creek
Win brass br2 coated DTAC with 41.7 H4350 and I am 3100 with my 28.5" Rock Creek
Re: 115g dtac fps
I liked 4831 in my 7mm mag.. could be a good one..
I liked 4831 in my 7mm mag.. could be a good one..
Re: 115g dtac fps
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: raythemanroe</div><div class="ubbcode-body">That sounds realistic..I'm gonna try different things like casings and powders but if anybody knows what casings are faster please howler.. </div></div>
Usually Lapua brass handles higher pressures better.
I bought some Nosler 6.5-284 brass years ago. It was blowing primers with a full grain less powder than the lapua.
For now you'd have to try other powders. R-17 would probably be the best bet to get the velocity up but it's a little temp sensitive. H-1000, H-4831, R-25 might give you more speed. In my 6x47L, a 28" barrel was producing 3070 fps with 39.2 grns of R-17.
Something else to try as a desperate measure would be to throat for close to max mag length with the DTACS. With the benefit of being able to put more powder in while keeping pressures reasonable.
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: raythemanroe</div><div class="ubbcode-body">That sounds realistic..I'm gonna try different things like casings and powders but if anybody knows what casings are faster please howler.. </div></div>
Usually Lapua brass handles higher pressures better.
I bought some Nosler 6.5-284 brass years ago. It was blowing primers with a full grain less powder than the lapua.
For now you'd have to try other powders. R-17 would probably be the best bet to get the velocity up but it's a little temp sensitive. H-1000, H-4831, R-25 might give you more speed. In my 6x47L, a 28" barrel was producing 3070 fps with 39.2 grns of R-17.
Something else to try as a desperate measure would be to throat for close to max mag length with the DTACS. With the benefit of being able to put more powder in while keeping pressures reasonable.
Re: 115g dtac fps
A good starting point for h1000 probably be what 46g in the 243 win?
A good starting point for h1000 probably be what 46g in the 243 win?
Re: 115g dtac fps
I have noticed the nosler brass to be similar to Winchester except more consistent on weight.
I have noticed the nosler brass to be similar to Winchester except more consistent on weight.
Re: 115g dtac fps
I double checked the chronograph today cause the weather was better (more sun) and my speed were consistently 2900 fps..high was 2907 fps...Still would like high 2900 or 3000 fps..
I double checked the chronograph today cause the weather was better (more sun) and my speed were consistently 2900 fps..high was 2907 fps...Still would like high 2900 or 3000 fps..
Re: 115g dtac fps
Gonna try some rl-25 ..local gun shop has a pound sitting around so why not give a try
Gonna try some rl-25 ..local gun shop has a pound sitting around so why not give a try
Re: 115g dtac fps
Does anyone think that the pressure signs could be cause nosler brass is to soft? I guess I could try something else..
Does anyone think that the pressure signs could be cause nosler brass is to soft? I guess I could try something else..
Re: 115g dtac fps
if I got 2950 fps I would be happy enough )
if I got 2950 fps I would be happy enough )
Re: 115g dtac fps
i'm gonna try that next (rl-25) and i will post the results..
i'm gonna try that next (rl-25) and i will post the results..
Re: 115g dtac fps
Try the Lapua brass, in a 3 groove Lilja barrel, using 43.5 grains of I4350, getting over 3000 fps, by ballistic calculator, not chrono. Bn coated 115's.
Using H4350, I have to drop at least a grain off that, or it's very hot, dropped primers etc. Similar velocities as the I4350.
Both are way faster than the Corbon factory loads, about 3-4 MOA at 100 yards.
Try the Lapua brass, in a 3 groove Lilja barrel, using 43.5 grains of I4350, getting over 3000 fps, by ballistic calculator, not chrono. Bn coated 115's.
Using H4350, I have to drop at least a grain off that, or it's very hot, dropped primers etc. Similar velocities as the I4350.
Both are way faster than the Corbon factory loads, about 3-4 MOA at 100 yards.
Re: 115g dtac fps
how do you like the three groove? I thought about it..
how do you like the three groove? I thought about it..
Re: 115g dtac fps
47g of rl-25 got to 3024 fps ..high node for me was 46.5 of rl-25 at 2995 fps..I like how the powder shoots far as accuracy..
47g of rl-25 got to 3024 fps ..high node for me was 46.5 of rl-25 at 2995 fps..I like how the powder shoots far as accuracy..
Re: 115g dtac fps
Surgeon .243
26" Bartlien (Melonite treated)
44gr of H4831SC
115gr Dtacs
BR-4 primers
3.270" ogive
.015" off lands
Avg: 3,019fps (fired brass)
This load is chrono'd and field verified at distance.
Surgeon .243
26" Bartlien (Melonite treated)
44gr of H4831SC
115gr Dtacs
BR-4 primers
3.270" ogive
.015" off lands
Avg: 3,019fps (fired brass)
This load is chrono'd and field verified at distance.
Re: 115g dtac fps
sounds like a nice piece got a picture?
sounds like a nice piece got a picture?
Re: 115g dtac fps
243 win DTAC 115g
27" hart barrel
Nosler brass
Federal match primer
Reloader-25 47g
chronograph reads 3024 fps
243 win DTAC 115g
27" hart barrel
Nosler brass
Federal match primer
Reloader-25 47g
chronograph reads 3024 fps
Re: 115g dtac fps
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: raythemanroe</div><div class="ubbcode-body">I recently loaded the 115g dtac for my 243win with 41.7g h4350 with federal match primers and my chronograph is reading 2826 fps...I was told that people were getting speeds of 3000fps with this...weather was 60 degrees out with a strong fog or dew that was kinda sprinkling.. would this kind of weather make that much difference in speed? I am already getting nice shiny extractor marks so I don't think I could jump it up to what some people are claiming to shoot 42g or more.. </div></div>
i hear ya! I loaded some Lapua brass with 41.5gr of H4350 and i get extractor marks with 2880fps avg.
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: raythemanroe</div><div class="ubbcode-body">I recently loaded the 115g dtac for my 243win with 41.7g h4350 with federal match primers and my chronograph is reading 2826 fps...I was told that people were getting speeds of 3000fps with this...weather was 60 degrees out with a strong fog or dew that was kinda sprinkling.. would this kind of weather make that much difference in speed? I am already getting nice shiny extractor marks so I don't think I could jump it up to what some people are claiming to shoot 42g or more.. </div></div>
i hear ya! I loaded some Lapua brass with 41.5gr of H4350 and i get extractor marks with 2880fps avg.
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