6x6.8 Special
- Thread starter onzah
- Start date
Smokin Barrel
Active member
IIRC aren't Mike's DTI series based off of the 6.8 cartridge? Is this different than DTech's 6DTI?
The Wolverine
New member
Mike's has a 30 degree shoulder, so you have to have custom dies.
The 6x68 uses the same shoulder as the 6.8SPC so it can be loaded with off the shelf Redding 6.8SPC full length bushing die, and two bushings, a .285 and a .268. basically stepping down to 6.5mm with the .285 bushing, then down to 6mm with the .268 bushing.
Paul
The 6x68 uses the same shoulder as the 6.8SPC so it can be loaded with off the shelf Redding 6.8SPC full length bushing die, and two bushings, a .285 and a .268. basically stepping down to 6.5mm with the .285 bushing, then down to 6mm with the .268 bushing.
Paul
yoteblaster
Active member
I think they should concentrate on shortening the wait on their 5.56 barrels first. Ten to twelve weeks is a bit much for a barrel. I have a feeling I am going to be disappointed that I waited for the barrel.
R Johnson
New member
Originally Posted By: yoteblasterI think they should concentrate on shortening the wait on their 5.56 barrels first. Ten to twelve weeks is a bit much for a barrel. I have a feeling I am going to be disappointed that I waited for the barrel.
All the Black Hole barrels I have were worth the wait.
All the Black Hole barrels I have were worth the wait.
yoteblaster
Active member
I ordered the lightweight 20 inch 5.56 on January 30th 2012 for a lightweight coyote hunting gun. No sign yet, I suspect it will be at least another month.
R Johnson
New member
Originally Posted By: pcammoIt looks to be a bit slower than the 6 DTI. Is there a chamber print? How is close is it to the 6 WOA?
It's in between the DTI and the WOA. The good part is it is loaded with off the shelf dies. It's a simple neck down of the 6.8 case from 6.8 to .243 with no other changes.
The speeds that are shown are out of an 18" barrel. I would bet they are within 50 FPS of each other with like barrel lengths
It's in between the DTI and the WOA. The good part is it is loaded with off the shelf dies. It's a simple neck down of the 6.8 case from 6.8 to .243 with no other changes.
The speeds that are shown are out of an 18" barrel. I would bet they are within 50 FPS of each other with like barrel lengths
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venatic
Well-known member
Mike (DTech) IIRC went that route to start with by just doing a straight neck down of the 6.8SPC to 6mm but the performance was not quite what he wanted thus the improved shoulder.
If I understood the above posts you have to size in two steps with two different bushings? It may be considered a biased opinion( so take it with a grain of salt) but personally just paying a little more and being able to size in one step and getting a a bump in performance seems to be a no brainer.
If I understood the above posts you have to size in two steps with two different bushings? It may be considered a biased opinion( so take it with a grain of salt) but personally just paying a little more and being able to size in one step and getting a a bump in performance seems to be a no brainer.
R Johnson
New member
Originally Posted By: venaticMike (DTech) IIRC went that route to start with by just doing a straight neck down of the 6.8SPC to 6mm but the performance was not quite what he wanted thus the improved shoulder.
If I understood the above posts you have to size in two steps with two different bushings? It may be considered a biased opinion( so take it with a grain of salt) but personally just paying a little more and being able to size in one step and getting a a bump in performance seems to be a no brainer.
I would like to see the numbers with an 18" barreled DTI. I would bet the differance would not be enough to matter. I am not trying to debate this cartridge. I am justsay what I have learned from it.
If I understood the above posts you have to size in two steps with two different bushings? It may be considered a biased opinion( so take it with a grain of salt) but personally just paying a little more and being able to size in one step and getting a a bump in performance seems to be a no brainer.
I would like to see the numbers with an 18" barreled DTI. I would bet the differance would not be enough to matter. I am not trying to debate this cartridge. I am justsay what I have learned from it.
knockemdown
New member
Originally Posted By: R JohnsonIt is loaded with a Redding 6.8 bushing die $56.00 and 2 bushings. The bullet is seated with Any Hornady 6mm seating die.
Total is less than $100
Two bushings are gonna cost ~$30 for steel and ~$50 for titamium. Add that to the cost of a bushing die and the price is almost a wash.
When you consider that custom dies provide a precise fit to your rifle's chamber, the tolerances of your ammo will be tighter and you'll see improved brass life. Then factor in a single pass through the sizer for the WOA & DTI and the benefit of saving literally a few dollars on bushing dies is completely lost on me.
And I wouldn't do either 3 on less than a 20" tube, with 22" being ideal (IMHO)
If someone were he!!bent to have an 18"er in 6mm, I'd steer them toward a 6x45...
Total is less than $100
Two bushings are gonna cost ~$30 for steel and ~$50 for titamium. Add that to the cost of a bushing die and the price is almost a wash.
When you consider that custom dies provide a precise fit to your rifle's chamber, the tolerances of your ammo will be tighter and you'll see improved brass life. Then factor in a single pass through the sizer for the WOA & DTI and the benefit of saving literally a few dollars on bushing dies is completely lost on me.
And I wouldn't do either 3 on less than a 20" tube, with 22" being ideal (IMHO)
If someone were he!!bent to have an 18"er in 6mm, I'd steer them toward a 6x45...
Originally Posted By: knockemdownOriginally Posted By: R JohnsonIt is loaded with a Redding 6.8 bushing die $56.00 and 2 bushings. The bullet is seated with Any Hornady 6mm seating die.
Total is less than $100
Two bushings are gonna cost ~$30 for steel and ~$50 for titamium. Add that to the cost of a bushing die and the price is almost a wash.
When you consider that custom dies provide a precise fit to your rifle's chamber, the tolerances of your ammo will be tighter and you'll see improved brass life. Then factor in a single pass through the sizer for the WOA & DTI and the benefit of saving literally a few dollars on bushing dies is completely lost on me.
And I wouldn't do either 3 on less than a 20" tube, with 22" being ideal (IMHO)
If someone were he!!bent to have an 18"er in 6mm, I'd steer them toward a 6x45...
The precision fit you are talking about is totally dependant on cartridge design, the custom dies may or may not be better than off the shelf dies. The bushing die will also improve brass life if setup with minimal sizing.
I dont see the advantages of loading the WOA or DTI vs the 6x6.8. The real comparison may be the cost of uppers.
Total is less than $100
Two bushings are gonna cost ~$30 for steel and ~$50 for titamium. Add that to the cost of a bushing die and the price is almost a wash.
When you consider that custom dies provide a precise fit to your rifle's chamber, the tolerances of your ammo will be tighter and you'll see improved brass life. Then factor in a single pass through the sizer for the WOA & DTI and the benefit of saving literally a few dollars on bushing dies is completely lost on me.
And I wouldn't do either 3 on less than a 20" tube, with 22" being ideal (IMHO)
If someone were he!!bent to have an 18"er in 6mm, I'd steer them toward a 6x45...
The precision fit you are talking about is totally dependant on cartridge design, the custom dies may or may not be better than off the shelf dies. The bushing die will also improve brass life if setup with minimal sizing.
I dont see the advantages of loading the WOA or DTI vs the 6x6.8. The real comparison may be the cost of uppers.
knockemdown
New member
Originally Posted By: onzahI dont see the advantages of loading the WOA or DTI vs the 6x6.8. The real comparison may be the cost of uppers.
I can't speak for the WOA, but the DTI will have slightly more case capacity. Combined with the modestly improved shoulder angle, the DTI should also allow for slightly higher pressure tolerance & net better velocity from the same parent case. I won't mention Mike's skillful attention to detail or stellar customer service though...
As for the cost of uppers, the price of any custom build is a net accumulation of:
1.the quality of the components used,
2. the amount of time the gunsmith spends on truing & assembly, and...
3. to a lesser extent, the gunsmith's reputation for building a solid product.
The cost of the upper itself has nothing to do with cartridge choice.
(and yes, I'm biased too)
I can't speak for the WOA, but the DTI will have slightly more case capacity. Combined with the modestly improved shoulder angle, the DTI should also allow for slightly higher pressure tolerance & net better velocity from the same parent case. I won't mention Mike's skillful attention to detail or stellar customer service though...
As for the cost of uppers, the price of any custom build is a net accumulation of:
1.the quality of the components used,
2. the amount of time the gunsmith spends on truing & assembly, and...
3. to a lesser extent, the gunsmith's reputation for building a solid product.
The cost of the upper itself has nothing to do with cartridge choice.
(and yes, I'm biased too)
venatic
Well-known member
While there is something to be said for having a caliber that is a little unusual I have to agree with Knockemdown. My 18 inch barreled 6X45mm with loads I chronographed last week with the new CFE223 powder with less than full throttle loads was pushing a 75gr bullet in the mid 2900's range. So with cheaper brass and ease of reloading the 6X45mm I am not sure in the shorter barrel if it is enough sugar for a dime to go to the trouble.
Now with the 22 inch barrel there is a modest but real difference in a WOA, 6X6.8 vs the 6mmDTi , so whatever suits your fancy.
If I wanted to shoot heavier than 85gr Bullets I would go for the WOA with its longer neck.
Now with the 22 inch barrel there is a modest but real difference in a WOA, 6X6.8 vs the 6mmDTi , so whatever suits your fancy.
If I wanted to shoot heavier than 85gr Bullets I would go for the WOA with its longer neck.