I've got a handful of those rbt dtac to try out.
Sierra 6mm 110gr. HPBT Matchking
- Thread starter kombayotch
- Start date
I've got a handful of those rbt dtac to try out.
I'd be very interested in additional confirmations from a variety of technically proficient and precision oriented long range hand loaders on this point.
If the BC is actually .585, that is great.... absolutely.
I'm just far too sceptical after the disappointing results of my first trip around this 115 DTAC thing. I spent a ton of money on a rig that was supposed to be ballistically competitive with the 6.5s, but it never paid off in the wind. It was deadly accurate in calm conditions, but the BC was not as advertised and it did not cut it in mixed conditions.
I will say though that I'm still a great fan of the 6mm in general especially for hunting or PRS shooting.... Just not for F Class past 600 yards... unless things have truly changed... and sooner or later they always do.
If the BC is actually .585, that is great.... absolutely.
I'm just far too sceptical after the disappointing results of my first trip around this 115 DTAC thing. I spent a ton of money on a rig that was supposed to be ballistically competitive with the 6.5s, but it never paid off in the wind. It was deadly accurate in calm conditions, but the BC was not as advertised and it did not cut it in mixed conditions.
I will say though that I'm still a great fan of the 6mm in general especially for hunting or PRS shooting.... Just not for F Class past 600 yards... unless things have truly changed... and sooner or later they always do.
When I fired the pointed DTACs at the GAP Grind last fall on the zeroing day, they were going at 3121 fps. (according to the MS). DA was ~1600. Dope was 8.8 mil to ring the 1200 yard steel. These there the pointed non-RBT DTACs.
Honest ballisticians are as common as honest politicians...
New bullet or old, I really don't care... one constant transcends all time... these manufactures continue to lie about BC.
I'll crunch the data from Kombayotch and see where it lands.
If the BC is actually as claimed, the bullet will almost certainly not be consistently accurate. Its just physics and it's always about finding that perfect balance.
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The pointed 115 DTAC has been used in the PRS for years. It's BC is well known. Not sure if Tubb will continue offering that bullet now that the RBT version is available. Not really much point...
The new bullet has been tested by a number of top competitors already. Regina Milkovich tested it and confirmed that a BC of 0.620 tracks.
The new bullet has been tested by a number of top competitors already. Regina Milkovich tested it and confirmed that a BC of 0.620 tracks.
The rebated bt is much less pronounced than I had expected from pictures. It's there, just not as drastic as I expected.
I grabbed them from insite, they said they'd had them for quite a while already. Pays to know people I guess.
I grabbed them from insite, they said they'd had them for quite a while already. Pays to know people I guess.
prairie lover
CGN Regular
- Location
- southern MB
what is your twist rate?
So far over at accurateshooter
Guys, it's cold here (25*). I wanted to see if these would stabilize or not.
243, 22" bartlien 5r, 1/8.
I used IMR 4451 because I wanted to try it too...
Hodgdon's starting load for this powder and 107's is 37.5 grains and went 2686fps, 38.5 was 2755fps, 39 was 2791fps. They all 3 made round holes in paper 225 yards away so they'll stabilize in mine anyway.
That's all I know right now.
And like a few people have said, its not enough info yet as it aint at 1000yds+ and a few other factors involved in the stabilization.
