Another 6x68 is born..
- Thread starter Bob_Atl
- Start date
So got a break today and enough time for a range trip to try some 87 gr VMAX in my new BHW 6x6.8.
Used 8208 XBR, 2.265" COL, CCI BR-4, HDY brass:
28.2 => 2940 fps ave, 7.8 sd
28.4 => 2954 fps ave, 14.0 sd
28.6 => 2962 fps ave, 28.6 sd
28.8 => 2974 fps ave, 6.7 sd, next best group (0.63")
29.0 => 2981 fps ave, 6.7 sd, best group (0.42"), and 1717 ft-lbs @ muzzle
primers still looked good, minor flattening, no craters, and still 100% AR function.
Used 8208 XBR, 2.265" COL, CCI BR-4, HDY brass:
28.2 => 2940 fps ave, 7.8 sd
28.4 => 2954 fps ave, 14.0 sd
28.6 => 2962 fps ave, 28.6 sd
28.8 => 2974 fps ave, 6.7 sd, next best group (0.63")
29.0 => 2981 fps ave, 6.7 sd, best group (0.42"), and 1717 ft-lbs @ muzzle
primers still looked good, minor flattening, no craters, and still 100% AR function.
Sweet lookin stick
Originally Posted By: MPFDI had a 6mm LBC and it would just shy of 2800 fps with 87 grain VLD's .... Is this really any faster or about equal?
Yes, faster, assuming yours was 20" or longer, based on my 20" results above with 87 gr VMAX pushed by 29.0 gr of 8208 XBR.
This barrel also likes 85 gr Speer SPBT, just as accurate and 2983 fps on 29.2 gr 8208.
HDY new brass & CCI BR-4.
Yes, faster, assuming yours was 20" or longer, based on my 20" results above with 87 gr VMAX pushed by 29.0 gr of 8208 XBR.
This barrel also likes 85 gr Speer SPBT, just as accurate and 2983 fps on 29.2 gr 8208.
HDY new brass & CCI BR-4.
Originally Posted By: Bob_AtlOriginally Posted By: MPFDI had a 6mm LBC and it would just shy of 2800 fps with 87 grain VLD's .... Is this really any faster or about equal?
Yes, faster, assuming yours was 20" or longer, based on my 20" results above with 87 gr VMAX pushed by 29.0 gr of 8208 XBR.
This barrel also likes 85 gr Speer SPBT, just as accurate and 2983 fps on 29.2 gr 8208.
HDY new brass & CCI BR-4.
In my 22" bhw 1/9" twist 28g x8208, 87g vmax RP brass runs at 3044 fps
The 6x6.8 sure likes 80-95g bullets in any rig.
29g x8208, 95g NHBT runs 3037.
Both those loads out perform my 243 loads w/same bullets.
Yes, faster, assuming yours was 20" or longer, based on my 20" results above with 87 gr VMAX pushed by 29.0 gr of 8208 XBR.
This barrel also likes 85 gr Speer SPBT, just as accurate and 2983 fps on 29.2 gr 8208.
HDY new brass & CCI BR-4.
In my 22" bhw 1/9" twist 28g x8208, 87g vmax RP brass runs at 3044 fps
The 6x6.8 sure likes 80-95g bullets in any rig.
29g x8208, 95g NHBT runs 3037.
Both those loads out perform my 243 loads w/same bullets.
BAYSTATE YOTE
New member
That's sweet!
Originally Posted By: MGYSGTWhen you say 6X6.8, Are you referring to a 6.8 necked down to a 6mm (as in 6mm WOA)?
Tom
They are referring to the straight neck down of the 6.8 to 6MM. No shoulder movement or angle changes. The barrel being used are done by Black Hole.
Greg
Tom
They are referring to the straight neck down of the 6.8 to 6MM. No shoulder movement or angle changes. The barrel being used are done by Black Hole.
Greg