How to beat the 338 Lapua?

[backcountryguide]

I come up with just about the same #'s as Broz. We run a .338 and a big 30 with the same bullets and velocities as mentioned above. I can confirm those #'s in field conditions using Shooter and AB. That said the 230 is a slick sob.

 

[Broz]

My test was about 4100 ' and 59 degrees F.

BC's will slightly change with velocities, but I guess in this instance the .075 is enough to show significant difference over the 2000 yards.


At 1000 yards I get this for the same wind.

30 cal / 230gr = 5.3 moa drift

338 cal / 300gr = 4.5 moa drift

Jeff

 

[Broz]

I come up with just about the same #'s as Broz. We run a .338 and a big 30 with the same bullets and velocities as mentioned above. I can confirm those #'s in field conditions using Shooter and AB. That said the 230 is a slick sob.

Yep, both great choices to go long. We have shot both as well. Plus we have been shooting the 338 / 300 gr at 3200 fps and a few over that. Put a 300 OTM at 3200 or a bit over and that makes the wind dial quite a bit easier.

Jeff

 

[fmajor]

Yep, both great choices to go long. We have shot both as well. Plus we have been shooting the 338 / 300 gr at 3200 fps and a few over that. Put a 300 OTM at 3200 or a bit over and that makes the wind dial quite a bit easier.

Jeff

Hey Jeff - are you getting this out of your LRKM Terminator +P or 338 Edge +P?

 

[IdahoCTD]

Strelok on my phone says the 30 is better as does Bergers ballistic calculator. I even ran it with G1 and G7 numbers on Berger's calculator and it has the 30 with a .5 MOA edge. I would think Brian did the Berger calculator so I don't know why his calculator would say something different compared to 3 other calculators.

It's kind of irrelevant as both will get the job done but it is kind of bizarre how one app/calculator is considerably off from the others.

 

[Broz]

Hey Jeff - are you getting this out of your LRKM Terminator +P or 338 Edge +P?

Terminator loaded to the hot side.

Jeff

 

[Broz]

CTD, I just modified (changed bullet specs) for a 300 win file in shooter that I already had. Then I already had a Lapua file. Let me go back tonight when I have more time and make sure I am not screwing this up. I trust we all know how to do this simple comparison, so I would like to know where the difference is. I hope it was not an error on my part. Again higher Bc's should drift less. But also time of flight should come into play. I will report back when I have more time. Right now I need to get to work. Maybe some others with experience with both bullets can chime is as well.

Jeff

 

[MMERSS]

Running same altitude I come up with almost identical drift between my programmed 300 RUM with 230's and my 338 Lapua with 300's at 2K. It will probably come down to what BC and velocity your program is trued for. If the 195's come around they may be an equalizer. If I compare to my heavy 338 shooting the 300's at over 3300fps there is no comparison.

 

[406precision]

My 300 norma with 230 and two 338 Lapuas with 300 smk run neck and neck at 2000 for wind...but I'm not pushing over 3000 fps wit the Lapuas
Jordan@406

 

[jonthomps]

I agree with what 406precision said. Looking at trajectory only, they are neck and neck. Energy, of course the 338 wins. However, I'll restate what Dave Tooley wrote me: "It's awfully hard to beat a big 30 cal at any distance." From what I've read and experienced most everyone will give the accuracy nod to the 300NM over the 338LM. With longer barrels (28-31") many shooters are getting 3000-3050fps or more from the 230gr berger.

 

[fmajor]

Terminator loaded to the hot side.

Jeff

Gotcha - thx!

 

[Broz]

CTD and others, my apologies. When I set up the profile for the 230's I used an existing profile from a 300 win and changed the bullet specs and velocity. This profile was from a rifle I had helped set up with a scope that didn't track true to .25 moa. So I had a turret correction factor entered in. My previous number were WRONG, my apologies.

I just corrected the file and ran the numbers again using the 338/ 300 gr @ 2850 and the 30 cal / 230 gr at 3200.

At 1000 yards in a 10 mph full value wind they both need 3.5 moa

at 2000 yards the 338 needs 9 moa even, and the 30 cal needs .4 moa less ay 8.6.

So the 30 cal with 230's will definitely run with the 338 LM if you can get it to 3200 fps. But get the 338 to 3200 fps and as stated there is no contest.

I have never gotten a 30 cal with a 230 to 3200 fps. But know several have with RL 33. It will be interesting to hear how the barrels hold up there. I know the 338 LM from a 30" will run at 2850 for over 1500 rounds and still shoot .5 moa. I would doubt the 30 cal at 3200 would get close to that.

Sorry for my faux Pas...

Jeff

 

[steeltraps]

With the 338 imp. 4100 feet elevation, 59 degrees. I get 3025 fps with my 300 otm bergers. AT 2000 yards with 10 mph cross wind = 8.13 moa, in wind drift. You can point a 300 otm berger up from .818 bc to .858 bc . That will make the 10 mph hold be 7.63 moa. With the same 3025 fps load pointed up . 338 lapua imp. rules

 

[Kiwi Greg]

If your buddies can constantly hit a 23" target at 2000ms the only way to "beat" them is a superior cartridge, which is more velocity or a bigger calibre/BC ie .375, even then you will need a fair bit of luck on your side.

In my experience a heavier projectile with a similar BC will "hold" better than a lighter one in the same conditions at ELR.

To push a 230 at the required velocity to keep up with the 300 in the Lapua will be a barrel burner for sure, not a problem for a hunting rifle but a major problem for a target/steel rifle.