230 gr in a 10 twist

[Blake72]

as everyone says it's all about the speed. So as long as the caliber and barrel length are enough to get you over 2825 or so you will be ok. any slower and you will have a problem

 

[L.Sherm]

I just ran across this on accurateshooter it was shot recently with a 300WSM with a 4 groove Kreiger 10 twist and the new 220 Berger at 1,000 yards its right at 2.5" not officially measured yet.

 

[Blake72]

I just ran across this on accurateshooter it was shot recently with a 300WSM with a 4 groove Kreiger 10 twist and the new 220 Berger at 1,000 yards its right at 2.5" not officially measured yet.

I couldn't be a bigger fan of the 300WSM, I have 4 of them. I do think it's the best cartridge possible for 1 mile and under.

 

[Phillygunner]

is anyone shooting 230 bergers in a 10 twist ? I know its not optimum, but will it stabilize 230 otm s ?

I'm shooting 230 bergers out of Bartlein 1-10 twist 26" barrel at 2875. It works great. I've shot that combo in Colorado at Elevation, in Kansas at Lower elevation and in Mississippi at sea level and it worked well in all instances. But, you will clearly get more hp out of it at elevation.

 

[VLD Pilot]

as everyone says it's all about the speed. So as long as the caliber and barrel length are enough to get you over 2825 or so you will be ok. any slower and you will have a problem

You could run the 230 at 3600 fps at 1000' elevation and still not be even close to stability. You'd need 3200 fps and 6000' elevation for full stability and that's JUST at 1.5. Even adding 400 fps at that same elevation, you only jump to 1.57 stability numbers. Velocity is not the way to gain stability. Twist and elevation are great ways to do it. The 10 twist will do it but at 6000' asl and pushing it 3150-3200 fps

 

[L.Sherm]

We can argue about #'s all day long.
I'm going off real world experience and my first was with 20 cal 55's in a 9 twist.
Shot them out to 500 yards groups were great and talked with a guy who tested 8, 8.5 and 9 in competition at 1,000 and he told me 9 was better out to 1,000.
The # say its marginal but real world experience says different.

 

[VLD Pilot]

We can argue about #'s all day long.
I'm going off real world experience and my first was with 20 cal 55's in a 9 twist.
Shot them out to 500 yards groups were great and talked with a guy who tested 8, 8.5 and 9 in competition at 1,000 and he told me 9 was better out to 1,000.
The # say its marginal but real world experience says different.

Well that's true. Certainly shoot first and figure it out. I just read some earlier posts and saw your 220 grain thread. I'm only going by a calculator so only theory. I agree, theory isn't real world work

 

[L.Sherm]

My Theory is always believe the target.

 

[VLD Pilot]

My Theory is always believe the target.

Right on. I'm with you 100%. I just had to do a calculation to see the numbers. I doesn't look real good but it's only a start.

 

[L.Sherm]

My 20 cal says 1.33 when you put my numbers in Bergers calculator about exactly what the 230 says.

 

[VLD Pilot]

My 20 cal says 1.33 when you put my numbers in Bergers calculator about exactly what the 230 says.

So your .20 cal shoots stability at 1.33 ?

 

[L.Sherm]

So your .20 cal shoots stability at 1.33 ?

Yes

 

[VLD Pilot]

Yes

Wow. That's proof positive that range work beats all. I'll keep that in mind. Never would have guessed the numbers on a twist calculator would be so far off. From my personal experience, it's always been real close.

 

[Blake72]

You could run the 230 at 3600 fps at 1000' elevation and still not be even close to stability. You'd need 3200 fps and 6000' elevation for full stability and that's JUST at 1.5. Even adding 400 fps at that same elevation, you only jump to 1.57 stability numbers. Velocity is not the way to gain stability. Twist and elevation are great ways to do it. The 10 twist will do it but at 6000' asl and pushing it 3150-3200 fps

I have 10 shot sub 1/2 MOA targets @ 1000 that say it works.