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338lapua or 338 lapua improved?

 
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  #1  
Old 02-24-2009, 07:43 PM
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338lapua or 338 lapua improved?

I want to build a fairly lightweight 338lm but cannot decide on which to chamber for. I have a stiller action want to stock it with a lazz thumbhole and barrel it with an abs wrapped barrel, length around 30" minus brake. Long story short other than increased brass life and extra exspense of dies and other stuff what will I gain besides having an oddball? anyhelp would be appreciated as I know some of you guys have some of these , if all goes well my next one will be a 30-338lapua improved.
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  #2  
Old 02-27-2009, 09:40 PM
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Re: 338lapua or 338 lapua improved?

Go for the gusto......

Anything "improved" is always better than the standard.

With the 338 Lapua I would imagine that the improvement would enhance internal ballistics which in turn improves external performance.

Additionally, you'll want that 300 SMK going as fast as possible.

The only other cartridge in the league of the 338 Lapua Improved would be the 338 AX that Kirby Allen designed. You may wish to visit with him.
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Old 02-27-2009, 09:58 PM
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Re: 338lapua or 338 lapua improved?

I was faced with the same delema. I went with the standard .338 Lapua. So I could order dies with ease, not have to fireform brass. I figured I could always do the improved thing later if I needed it. I have yet to need more case capacity shooting 300 gr SMK's. I use H-1000 for powder. We have shot it to 2100 yards at steel with great success. I have taken a deer at 1137 yds, speed goats to 820 yds. I don't know about the extended brass life of the Improved. But I can tell you this, first hand. I started with 100 new Lapua brass. Trimmed them once when new. They have been fired 4 times and I just worked the brass and it is primed ready for loading number 5. All 100 cases have not grown over .002", the primers still go in with great resiatance and all take the same pressure to seat them. Also the shoulder have never needed bumped back. So, I guess for me and my rifle all is happy. I guess I won't change it in fear I will just create something that is more work, $$, and harder on brass.

I will add I am using the competition Redding "S" bushing dies right off the shelf. I really like these dies.

Just my 2 cents.

Jeff
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Last edited by Broz; 02-27-2009 at 10:01 PM. Reason: add
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  #4  
Old 02-28-2009, 12:33 PM
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Re: 338lapua or 338 lapua improved?

Broz,

Your post is a great testament from actual experience and a credible rifle pilot.

All the bases were covered especially the LR shooting.

The only discussion I would introduce is where you say "I have yet to need more case capacity shooting 300 gr SMK's." I just couldn't live like that

What kind of velocity are you getting w/the 300 SMK?
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  #5  
Old 02-28-2009, 02:01 PM
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Re: 338lapua or 338 lapua improved?

Quote:
Originally Posted by royinidaho View Post
Broz,

Your post is a great testament from actual experience and a credible rifle pilot.

All the bases were covered especially the LR shooting.

The only discussion I would introduce is where you say "I have yet to need more case capacity shooting 300 gr SMK's." I just couldn't live like that

What kind of velocity are you getting w/the 300 SMK?
Thanks Roy,

I guess my satisfaction comes from when I was racing, tuning, and building Nitro engines. You can't win a championship with a one round wonder. So if it is happy, consistant and not killing it self. Practise your driving skills and go get em.

I am still shooting the load Joe Starnes worked up when he built the rifle. The plan was to increase the powder after the cases were all fired once. But the field test and the repeated performance of the rifle leaves me happy. So I just enjoy a real shooter that I don't feel a need to mess with. In stead I spend my time busting rocks and steel for practise with cold bore shots. I am using only 91 gr of H-1000 with a CCI 250 mag. I have two chronys that conflict so all I can tell ya is it's around 2750 and that lines up well with my exbal program using .768 for a BC on the 300 SMK. I see alot of people use 92 gr with the .338 Edge but I have never felt the need to push it up just for a few FPS. Even though I have plenty of room in the case still. I think the AI would get me another 2 gr of space but like I said. Haven't needed it yet. If I get the urge to tear stuff up, I have a custom 25-300 Weatherby Mag I built back when I was on my Velocity kick and never turned knobs.

Here is a VID my son made of us busting a few Speedgoats with her. Magnus was on the spotter and camera. I have learned a lot from him. You get around him and Joe with one of Joes rifles and it is impressive to say the least.

Enjoy.

YouTube - Extreme range hunthing with a .338 Lapua
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Last edited by Broz; 02-28-2009 at 02:05 PM.
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  #6  
Old 02-28-2009, 02:11 PM
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Re: 338lapua or 338 lapua improved?

I am not trying to deture or steal this thread. But to get back to the origional question and support my case of being very satisfied with the standard .338 Lapua. Here is a pic of a group Joe shot with my rifle. Still fireforming brass and the dond is 36" , 3 shots, 2100 yards away. Took 83 MOA of elevation.

Jeff

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  #7  
Old 02-28-2009, 08:47 PM
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Re: 338lapua or 338 lapua improved?

Thanks for the input I saw the vid on youtube way before I posted this and must say very impressive. I shoot alot of bench up to a grand and none the cartridges i shoot at that distance are suitable for longer yardages, plus I would like a rifle in a big cal to hunt with that is suitable for the longer yardages. There is the option of a chey-tac or the 338xt but they dont seem to be very portable or to my liking, I can bench race all day but would rather hear what the guys who have time and money invested have to say.
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