Why 1:11 twist for 30-06?

[MudRunner2005]

Just to give you some insight, I have a custom .30-06 AI that has a 26" 1:12" twist, that I send Berger 185 VLD's out of at over 2,900 fps muzzle velocity. I would have no problem shooting steel at 1200-1500 yards with it, and taking a whitetail deer at 1,000 yards, because at that distance, it still has almost the same ballistics (1,515 fps, 943 ft.lbs.) as a point-blank shot from a .44 Magnum.

My point is, you don't always have to let a slightly slower-than-ideal twist rate ruin your good time.

 

[FEENIX]

I doubt they are random.choices, or the only dies they got.

More than likely by design/business strategy per their market research in EU.

 

[Barrelnut]

Greyfox may have given a reason with the Mil-spec Remington. Sako maybe using Mil-spec standards for their 30 cal barrels because of the 7.62 NATO round.

 

[Bullet bumper]

Anyway it's a storm in a tea cup really .
Still going to work fine for 90% of cases and that fits the average hunter fine.
There is always some leeway on each side of any twist number that still does the job ok. Military ammo is loaded a bit hotter and they only use a certain type of bullet so they can zero in on a specific twist that does exactly what they need and no more .
Hand loaders are a bit different and the needs are more diverse than the Military needs. Hand loaders don't always want to drive a bullet hard or may want to use heavier longer bullet than usual so a twist rate has to have some more flexibility for them .
Sako has never been a company to really consider hand loaders or owners who want to customize their rifles . I pleaded with Sako many years ago to add the the option of an integral machined on Picatinny rail but to no avail. The Fins are a very stubbon race of people and do it their way and don't listen to outsiders much . I think they may have opted for it on one of their sniper actions years later . I can't remember which one . The thing is they are great rifles but they lack the ability to customize like you can a Rem 700 . Remington knows the value of that ability to buy add on's that tweak the guns suitability and they make extra money doing it .

 

[TOM H]

Thanks. This is what I was getting. If I bought a rifle with 1:11, would it suit my needs. Currently I shoot 180, just cause hunting close. And just what I started with years ago. I may try lighter someday.


I have 2 30-06s with 1:10, I could load for 200+ for bears at 40 yards. With today's expanding bullets I would have to research if open up at 30-06 speeds. Richard Smith. Local author suggests 150s cause 180s not opening up on bears. He is talking about factory corlokts though.

All I wanted to know is what were they marketing 1:11 for. They could do better job. A tech section would be nice. Maybe there is

You may not have good selection here but Sako does make ammo and here is list.

http://www.sako.fi/sites/default/files/Sako_Cartridges_datatables_2017.pdf

 

[Zerk]

A
The Fins are a very stubbon race of people and do it their way and don't listen to outsiders much . I it .

They got SISU. Beat the Russians back in Winter war.

Got a little in me, and lots around here.

 

[Zerk]

More than likely by design/business strategy per their market research in EU.

Why does Remington do it in 308?

I tend to think we have a problem with change.

I am no expert, but it seems jack of all trades to use same twist for 150 to 220. I think that is the best point to consider.

Their guns are supposed to be accurate.

 

[Zerk]

You may not have good selection here but Sako does make ammo and here is list.

http://www.sako.fi/sites/default/files/Sako_Cartridges_datatables_2017.pdf

I hand load.


Hand load or factory, I think there a very small group that uses anything mite than 180 in 30'06. I have not met anyone in real life who does.

 

[Zerk]

Just to give you some insight, I have a custom .30-06 AI that has a 26" 1:12" twist, that I send Berger 185 VLD's out of at over 2,900 fps muzzle velocity. I would have no problem shooting steel at 1200-1500 yards with it, and taking a whitetail deer at 1,000 yards, because at that distance, it still has almost the same ballistics (1,515 fps, 943 ft.lbs.) as a point-blank shot from a .44 Magnum.

My point is, you don't always have to let a slightly slower-than-ideal twist rate ruin your good time.

What powder and charge are you using? I have been having good luck with imr 4350, but wonder if a modern powder is out there. Hunter wad to much pressure in pump. Haven't tried in bolt yet.

Going to load some Varget.

 

[Zerk]

Just to give you some insight, I have a custom .30-06 AI that has a 26" 1:12" twist, that I send Berger 185 VLD's out of at over 2,900 fps muzzle velocity. I would have no problem shooting steel at 1200-1500 yards with it, and taking a whitetail deer at 1,000 yards, because at that distance, it still has almost the same ballistics (1,515 fps, 943 ft.lbs.) as a point-blank shot from a .44 Magnum.

My point is, you don't always have to let a slightly slower-than-ideal twist rate ruin your good time.

What powder and charge are you using? I have been having good luck with imr 4350, but wonder if a modern powder is out there. Hunter wad to much pressure in pump. Haven't tried in bolt yet.

Going to load some Varget.

 

[MudRunner2005]

Why does Remington do it in 308?

I tend to think we have a problem with change.

I am no expert, but it seems jack of all trades to use same twist for 150 to 220. I think that is the best point to consider.

Their guns are supposed to be accurate.

Because the M24 sniper rifle is a Remington 700, and Boots Obermeyer designed the 11.25" twist with 5R rifling, and it won the accuracy tests, therefore, the contract went to Remington. It is a proven rifling and twist rate for the .308 Win for mil-weight 7.62.51 ammo, which is 168 and 175 grain.

 

[MudRunner2005]

What powder and charge are you using? I have been having good luck with imr 4350, but wonder if a modern powder is out there. Hunter wad to much pressure in pump. Haven't tried in bolt yet.

Going to load some Varget.

Powder charge is only relevant to each individual chamber and and bullet weight, also the cartridge dimensions and brass brand, lot, and weight.

But I can tell you that I use IMR 7828 SSC.

 

[Zerk]

I realize you need to work up loads in guns for safety and accuracy. I am not one of those if I tell you, you will kill yourself types. Maybe I'll check that powder out. Never heard of it

 

[MudRunner2005]

I realize you need to work up loads in guns for safety and accuracy. I am not one of those if I tell you, you will kill yourself types. Maybe I'll check that powder out. Never heard of it

The warning is for MY protection, not yours. All we (the good folks on this site) need is some random internet person to think they can reload ammo, and end-up getting hurt, or hurt someone else, and then try to blame us for bad advice, when they had no knowledge or business playing with hazardous materials in the first place.

That's why most of us rarely ever give actual load data, because we know that each individual chamber is going to be different, and react differently to different powder charges. If we do post a powder charge, we generally add a disclaimer on it. lightbulb

Once again, not saying you don't know what you're doing, but you're so new, we don't know you well enough to know your abilities. A lot of us have been around this site (and guns) for many many years, and we all [sort-of] know each other through here, and know who knows their stuff.