Super Fast Twist Barrels for Hammer Bullets

[crkckr]

Hart is another one that will cut whatever twist you desire!
Cheers,
crkckr

 

[SheepShapeAK]

If everybody would quite ordering barrel from them, it wouldn't take that long. Must have something that everybody wants, including me.

I got lucky one day poking around at Southern Precision, and they had four .284 Bartleins in stock with the twist rate, length, and contour, that I was looking for. So, I took two off their hands.

 

[HRM Johnny]

I look forward to that thread!

I will be looking forward to it also.

 

[ButterBean]

I just did a 22-06AI in a 7 twist and I made a huge mistake, the 7 Twist slowed the bullet down, my goal was 5K had I went with a 10 twist I would have made it

 

[Mike Matteson]

I just did a 22-06AI in a 7 twist and I made a huge mistake, the 7 Twist slowed the bullet down, my goal was 5K had I went with a 10 twist I would have made it

Interesting and to bad at the same time.

 

[ButterBean]

Interesting and to bad at the same time.

It's a lesson learned

 

[Mike Matteson]

It's a lesson learned

What took place? To hard to drive it down the tube? I know you had enough powder to push it anyway you wanted to go. I know I keep looking at twist rate, and kind of wonder about it. Either to much or to little. I note sometime back with loading in 220 swift that the 55gr was slowed down to 3600fps in a manual. It was changed to a 1-12 twist rate, and my with a 1-14 rate is 3900+fps. It had me going until I saw the twist rate was faster. I can remember when the 22/250 came out. They worked on trying to show it was just as fast at the 220 Swift. At the same time claining it wasn't a barrel burner.

 

[df0226]

K and p barrels in south dakota makes cut rifled barrels in any twist. And if you check he makes MOST elrx barrels for the top competitors.

 

[ButterBean]

What took place? Too hard to drive it down the tube? I know you had enough powder to push it anyway you wanted to go. I know I keep looking at twist rate, and kind of wonder about it. Either to much or to little. I note sometime back with loading in 220 swift that the 55gr was slowed down to 3600fps in a manual. It was changed to a 1-12 twist rate, and my with a 1-14 rate is 3900+fps. It had me going until I saw the twist rate was faster. I can remember when the 22/250 came out. They worked on trying to show it was just as fast at the 220 Swift. At the same time claining it wasn't a barrel burner.

The faster I tried to push the bullet the more the tight twist pushed back

 

[nksmfamjp]

I'm really curious about an increase in terminal performance of Hammer and Cutting edge bullets. With faster twist barrels.

I see bullets like Makers, Barnes and discreet Ballistics bullets are benefiting from high twist rates. 1:3 for 8.6 and 1:5 for 300BLK. The 8.6 with a 1:3 is spinning a 210gr Barnes 500k RPM

I myself am looking at a 416 Rigby with a 1:8-1:9 barrel. It will double the RPM and quadruple the rotational KE over the 1:16.5


I went off on a tangent. Anyways just curious terminally how faster twist rates and non conventional bullets work together

I'm a bit confused here. What is the purpose of that much twist?

 

[Longrangers]

I'm just curious if you get a super fast twist barrel are you committed to monos only? I think I read from Litiz that you can over spin jacketed bullets. I know that I tried shooting a hornady bullet out of a 7x300 weatherby to 1000 yds and they were blowing up and never made it.

 

[FEENIX]

I'm just curious if you get a super fast twist barrel are you committed to monos only? I think I read from Litiz that you can over spin jacketed bullets. I know that I tried shooting a hornady bullet out of a 7x300 weatherby to 1000 yds and they were blowing up and never made it.

No Sir! The bullets blowing up has more to do with the quality of the bullet/construction/design.



I have a 1:7" on my .257 WBY to primarily propel the heavies (131s, 133/135s, 145s, etc.), but I have shot 110/115 factory cup and core without any issues. I have also asked Berger Tech Support if I can still shoot the 115s, and they said no problem and to have fun with it. There are also guys here that shoot the 115s in a 1:7" without no issues. Hopefully, they will chime in.

 

[FEENIX]

Interesting. I wonder if this is really a place for gain twist as opposed to straight twist.

I, too, find the gain twist interesting, as well as the MRR (https://www.sabatti.it/en/mrr-rifling). I might have to explore it on my next project build.

It is my understanding that straight fast twists cause bullets to skid down the barrel ripping a std jacket of….or at least damaging it.

I don't really have any idea about gain twist. Can I start at like 9 twist and finish at 7 twist, or is that too aggressive?

See #40.

 

[nksmfamjp]

See #40.

That video is 3 years old. 8twist in 6.5 was fast then! Now guys are trying 6Twist in 6.5mm…