6mm 108 Berger Hunter terminal & accuracy feedback

Have fiddled with the RL26 in both the 6 and 6.5 and it is crazy fast. I haven't done a proper temperature test, but over about 80* it gets funky. The CCI450's will ignite it just fine below zero. Any other primer is questionable at best. Thanks.
I've found if you stay off the top node w RL26 it is stable throughout temperature ranges. I'm running it in my sheep rifle, 21" 6.5 Creed and haven't had any issues with temp. I've shot it from 10° to over 90°. Running the 135 classic hunters at 2960.
 
Berger stability chart shows 1.73 for the 108 EH @ 3100 fps with 8 twist and 4000 ft elevation. Have shot enough 6 mm 105 and 108 target bullets at 1000 yards on paper that I would think 8 twist be perfect for this bullet for best accuracy.
I suspect it's the elevation and more importantly the temperature. my data is always calculated closer to my hunting conditions. This is ~0*C (32*F) at sea level. It be interesting to see what Berger's chart states. It should be closer to marginal stability. Or my data collection needs a serious re-calibration. More importantly is, based on your experience it'll be worth the trial load. As I stated previously if these 108gr shoot like their big brother (140gr in the 6.5CM) I'll be a very happy hunter.

THIS IS MY NEW RIG but it now has the insight arms "Heathen" 6mm brake on. Trigger arriving this week.

oh BTW anyone ever shot the 88gr Warner flat line projectile? There expensive but might be an option for me as there available.
 

Attachments

  • 2D613C30-CB26-4591-BFF1-A35CC7001CFC.jpeg
    2D613C30-CB26-4591-BFF1-A35CC7001CFC.jpeg
    359.2 KB · Views: 132
Have fiddled with the RL26 in both the 6 and 6.5 and it is crazy fast. I haven't done a proper temperature test, but over about 80* it gets funky. The CCI450's will ignite it just fine below zero. Any other primer is questionable at best. Thanks.
FED 215 seem to work fine in high pressure and hot weather. Mind you it's with a good slower burning powder like N-160, StaBall 6.5, Hybrid V 100. Superformance is also a great powder.
I've found if you stay off the top node w RL26 it is stable throughout temperature ranges. I'm running it in my sheep rifle, 21" 6.5 Creed and haven't had any issues with temp. I've shot it from 10° to over 90°. Running the 135 classic hunters at 2960.
sure with I could get my hands on some RL....it's unicorn dust in these parts.
42.4 grains H4350, Lapua Brass, CCI 450. I will play around w RL26 soon but just through this load together to get the bbl broke in.
42.1gr Vg in Peterson brass CCI BR2 WITH 87gr Hornady at 2.1860 CBTO IS A TAC DRIVER but I've only completed stage 1 test. Still need to G7 @ 600M. Likely won't group as well but very little options available now.
 
Gave the 108 GR Elite hunter a try in a 22" barrel chambered in 6mm ARC for deer This fall. Muzzle velocity was coming in at 2780fps.
Shot was just over 250 yards & deer was quartering away. I was going for the high shoulder & ended up hitting just a bit back from my intended impact point. Results worked out to be phenomenal DRT. What else could you expect with a low spine hit. To be honest I don't feel this was a very good test as a fmj would have performed quite similar with the same point of impact.
Small un-detectable hole going in, small somewhat detectable hole going out. One vertebra pulverized lost maybe a pound of meat.
IMG_3869.JPG
 
Last edited:
Gave the 108 GR Elite hunter a try in a 22" barrel chambered in 6mm ARC for deer This fall. Muzzle velocity was coming in at 2780fps.
Shot was just over 250 yards & deer was quartering away. I was going for the high shoulder & ended up hitting just a bit back from my intended impact point. Results worked out to be phenomenal DRT. What else could you expect with a low spine hit. To be honest I don't feel this was a very good test as a fmj would have performed quite similar with the same point of impact.
Small un-detectable hole going in, small somewhat detectable hole going out. One vertebra pulverized lost maybe a pound of meat.
View attachment 320643
Great looking deer. Well done
 
I shot a doe at 400 this year with 108s details on this thread:
 
Took a doe quartering at 300yds with the ladies new 6cm build. I'm still working up the load as I'm finally finding a node with 6.5 staball. Goal is 3000fps out of a 22" barrel we're at 2915fps on the first 30rds through it. I didn't take any pics but high shoulder quartering through and through. No recovery. Hit pretty **** hard if I'm being honest. She fell like a sack of bricks then ran maybe 20 yards and fell over and died. Truthfully the first successful hunt I've had with a Berger hunting bullet. All my others have been somewhat lack luster despite proper shot placement.
88192D2F-3303-4534-B3EC-BFD5F4D2E3B3.jpeg
 

Attachments

  • D755487E-1EE2-4DF1-881F-C3E89DBB2693.jpeg
    D755487E-1EE2-4DF1-881F-C3E89DBB2693.jpeg
    2.9 MB · Views: 106
I've not been impressed with 108's on coyotes. At 3000 FPS out of 7-8t barrels I will get runners unless the shot placement is perfect. I know I've used them on at least 50 animals since the middle of last season. They act like a "match" bullet on lighter fare in my opinion. A lot of through and throughs with no real damage. I will probably try to use the rest of them up on steel. if I have any left over when it arrives I will try them in a 7t 6PRC to see if the extra rotation and velocity makes any difference.
 
I've not been impressed with 108's on coyotes. At 3000 FPS out of 7-8t barrels I will get runners unless the shot placement is perfect. I know I've used them on at least 50 animals since the middle of last season. They act like a "match" bullet on lighter fare in my opinion. A lot of through and throughs with no real damage. I will probably try to use the rest of them up on steel. if I have any left over when it arrives I will try them in a 7t 6PRC to see if the extra rotation and velocity makes any difference.
I had the same problems with 105's they were like a fmj.
 
I picked up a 243AI and load developing right now. 26" 1-7.5T Criterion barrel.

88gr Hammers:

RL17
Lapua Case
WLR
.004" neck tension/light taper crimp in PDR band
COL 2.800
3400fps 243 WIN RL17 @ 45gr
3555fps 243AI RL17 @ 47gr
.3 MOA ave group of ten, 5 shot groups fired!

105 VLD Target:

RL17
Lapua case
WLR
.004" neck tension
COL: 2.857
3150fps 243 WIN RL17 @42.5gr
3325fps 243AI RL 17 @ 44.5gr
Same great groups
 
Top