New Dtac rbt 115 vs Jlk 115?

[Falfan2017]

Anybody have opinions between these two for a high bc fclass bullet for 600 and 1k?

Would 7.5 twist be best?

What velocities could you expect with a bra, dasher, brx with a 30” tube?
Thanks!

 

[germanlongbow]

Not sure on the JLK 115 but I've been using the 115 dtacs for a few years in three 243 Ai's with both krieger and bartlein 1x7.5 twists for velocity at 3080 fps. Shot out to 1400 with good results. Pulled the barrel and set it back to 6 suam. Hoping to see 3300-3400 fps. I do shoot the 140 jlk in my 6.5 saum, good bullets. Swampy makes a great product, doubt you would have any issues with his 115 gr pills.

 

[swd]

I never could get much speed out my BRX's with DTAC's, 2700ish if I recall, in a .140" FB chamber. To get them out of the neck shoulder area you need so much free bore your pretty much be stuck with that bullet, .180"+ range. I have very good results with 110 SMK's. 7.5" or even a little faster is the way go. My latest barrel is a 7.3" Broughton and it seems perfect for the 110 SMK. I can push them 3000+ with no pressure issues with excellent accuracy. They hold water line and X ring very well.

 

[338bigdog]

I shoot the Sierra 110 out of a 6xc broughton 5c 8 twist with no issues also @ 3030fps. Have not tried the 115 dtacs yet but need to throat out to use them another 30 thou

 

[1shot]

I shoot the 110 SMK's out of a 7.5 twist Brux in 6SLR. 3,115 fps.
I hope this helps,

Lloyd