Browning Xbolt Long Range rate twist change for 2018?

[DPR64]

Looking to pick up a Hell's Canyon Long Range in 6.5 Creedmoor to go along with a Hell's Canyon Speed I have in 243 and did notice that Browning has changed over the twist rate on most of their long rang rifle with the heavy sporter profile for this 2018 calendar year.. In the 6.5, they are going from 1:8 to the 1:7 twist most likely to stabilize the heavier end of the bullet weight spectrum...
Any input on this and how do you think it will affect the 120-140gr factory ammo? I do not handload so I am curious as to why/how/etc this new twist work on everything...
Thanks!

 

[Formidilosus]

Browning is certainly getting twists right...


1:7” is better for the 6.5 as bullets are only getting longer. Light weights will shoot just fine from it as well.

 

[DPR64]

So the lighter bullets like the 123 or 120 cannot be over stabilized/spun? If I try to do some varmint hunting and go even lower like 100-115 (making something up!) those will be fine in a 1:7 twist also? I know it is about contact with the longer bullets and the 1:7 should be especially good for 140+/long bullets...

 

[Formidilosus]

So the lighter bullets like the 123 or 120 cannot be over stabilized/spun? If I try to do some varmint hunting and go even lower like 100-115 (making something up!) those will be fine in a 1:7 twist also? I know it is about contact with the longer bullets and the 1:7 should be especially good for 140+/long bullets...

“Over-stabilization” isn’t real. Bullets coming apart in flight can happen with certain bullets and twists- but is vastly over stated. You will not blow up any common bullet in a 6.5 Creedmoor with even a 1:6” twist.


A 1:7” will shoot great with anything you feed it.

 

[savage _stag_bighorn]

@Formidilosus do you have 1 or more 1:7“ 6.5’s? I was planning to go with a 1:7 but after making a post got a lot of feedback and was told there was no to go faster than 1:7.5. From what I’ve read plus seeing every Browning X-bolt in 6.5 Creedmoor and both 16”/22” Q the FIX 6.5 CM all come in 1:7, as well as prefits offered in 1:7 I figured I was good to go. Am I better off staying at the min 1:7.5?

Curious on your thoughts since I ran across this thread and you were very confident that 1:7 wouldn’t cause any issues.

I’m looking to load up the Berger 153.5 LRHT’s with RL16/RL23 or ideally RL26 (hopefully, if I can get it). With SRP Lapua or Alpha brass & Rem. 7-1/2 primers. I wouldn’t be shooting anything lighter than a 144 gr.

Rifle will be an Origin action + 27” barrel (haven’t ordered yet)

Thread on 156 gr in 6.5 CM with posts on 1:7 vs 1:7.5 (page 9).

6.5 creed and 156gr Bergers

Y'all are getting some impressive results out of the Creedmagic. Maybe I should try loading my PRC down.

rokslide.com

 

[Formidilosus]

@Formidilosus do you have 1 or more 1:7“ 6.5’s? I was planning to go with a 1:7 but after making a post got a lot of feedback and was told there was no to go faster than 1:7.5. From what I’ve read plus seeing every Browning X-bolt in 6.5 Creedmoor and both 16”/22” Q the FIX 6.5 CM all come in 1:7, as well as prefits offered in 1:7 I figured I was good to go. Am I better off staying at the min 1:7.5?

Curious on your thoughts since I ran across this thread and you were very confident that 1:7 wouldn’t cause any issues.

I’m looking to load up the Berger 153.5 LRHT’s with RL16/RL23 or ideally RL26 (hopefully, if I can get it). With SRP Lapua or Alpha brass & Rem. 7-1/2 primers. I wouldn’t be shooting anything lighter than a 144 gr.

Rifle will be an Origin action + 27” barrel (haven’t ordered yet)

Thread on 156 gr in 6.5 CM with posts on 1:7 vs 1:7.5 (page 9).

6.5 creed and 156gr Bergers

Y'all are getting some impressive results out of the Creedmagic. Maybe I should try loading my PRC down.

rokslide.com

Yes I have shot plenty of 1-7” twists 6.5cm. You are not going to overspin modern bullets, don’t worry about it.

 

[savage _stag_bighorn]

Yes I have shot plenty of 1-7” twists 6.5cm. You are not going to overspin modern bullets, don’t worry about it.

Awesome. Thanks @Formidilosus
Do you have a 6.5 PRC or similar magnum in 1:7?
I might get one in the future after my new CM barrel. I’ve been reading people speculate on RPM and over 300-350k being “dangerous for jacket separation.” Only bullets that I’ve ever really read about having issues are ELD-M’s though, mainly 147’s.

Have you snot any magnums in 6.5 that had any issues with 1:7?

Thanks again. Appreciate your insight and help.