I’m looking at doing a rebarrel on my S20 6.5 PRC. 1-8” is to slow for long bullets and I’m thinking of going all they was to 1-7. Anyone have any thoughts on this? Is it to fast? Looking at HORNADY 143 eld-x or Berger 156.
This is a good point - my perspective is shorter barrels in the bitter cold with pressures well under max. Hence my preference for faster twists.
…or you could go 1:8 and blow up less bullets?1:7 works fine for most stuff in the 6.5 PRC. I did have 153 A-Tips start blowing up after about 1200 rounds on my last barrel. The Berger 153.5s have never had a problem. I also never had a problem with the Hornady 147ELDs either, but did not shoot them as much. I shoot all of these in the 2950-3050fps range.
26 inch barrel. Will usually be over 1500 feet above sea level and between -10c and +18c.Do we have to guess the barrel length and conditions you have in mind or are you going to tell us? It's pretty doubtful you'd download 6.5PRC to the point 150's are too slow for 1:8 unless you talking about an SBR. You for sure can over spin them until they come apart though. 1:7 6.5 barrels are mainly for slow 6.5 with 150's, not 6.5PRC/6.5-284/6.5-06.
300K I'm a new barrel or 300K 1200rds in are two different things thoFwiw, Berger says most of their bullets will handle “up to 300k RPMs.” For certain bullets, especially if you call and talk to them, they’ll be like “300k *wink wink*.”
I’ve tested .224 85.5s in a 6.5t up to 355k RPMs (in a 28” barrel) without failure. Obviously not a 1:1 comparison, but bottom line is while they say 300k, and while I’m sure that there are certain bullets that will shed jackets around 300k, I think others will go higher.
I know that Berger has also started using thicker jackets in some of their designs because assholes like us like to make things as difficult as possible. I run a 1:7t 6.5x47L with 153.5s, but it’s really slow (~2600fps), so I don’t really have any concerns about blowing jackets apart.
All that to say, is a 7t probably unnecessary in PRC? Yes. Can you probably get away with it? Also yes.
I’m wanting
26 inch barrel. Will usually be over 1500 feet above sea level and between -10c and +18c.
300K I'm a new barrel or 300K 1200rds in are two different things tho
If you shoot shitty hornady bullets, yes. Not with a quality bullet like Berger or Sierra.doesnt the PRC have a history of blowing up bullets on faster twist?
I run 147s at 3050 out of a 24" 1-8 with no issues.
But they do in the right barrel. And I have seen them.This is bullshit. Don't whitewash and say Sierra and berger have a problem with bullets coming apart when they don't.
You know what I haven't seen? A berger or Sierra bullet ever blowing up.
This is bullshit. Don't whitewash and say Sierra and berger have a problem with bullets coming apart when they don't. There is documented pattern of hordnady bullets both eld and atips blowing up. I've seen it , many I know have seen it and if you search the net a decent amount of people saybthe same thing.
Hornady makes shitty, inconsistent bullets that are not ballanced. So when they get above some rpm, they come apart...usualy within first 100 yards of the muzzle.
You know what I haven't seen? A berger or Sierra bullet ever blowing up.