338 thunder project

Re: 338 thunder pics

RL22 and RL25 are just about as temp stable as most other powders. Maybe a little more finicky, but not a problem.

FOr long range hunting, I believe it imperative to go chrono your gun one more time a few days before your hunt anyway just to make sure nothing has changed. I anticipate the weather during the hunt and load my ammo accordingly. If the weather is supposed to be 25 degrees cooler, then I will bump up the charge just a bit based on earlier testing that is logged in my range book. In other words, no matter what the powder I'm using, I chase the "sweet spot" from season to season.

This is work, but it is necessary for killing game out around and past 1k.

I do this for Hodgdon, IMR, Alliant, and VV and it is necessary in all of them.

Some here might remember me saying that "extreme line" is just marketing by Hodgdon and requires tweeking from season to season. Well, it still does in my opinion, but maybe not as much as Alliant powders.

RL22 and RL25 are mainstays in my powder storage because they work the best in so many darn calibers that it isn't funny. I currently have 3 guns that like RL22 more than any other powder.

My only gripe with them is that they vary way too much from lot to lot. SOmetimes when I switch lots of RL22, I have to back down or bump up my charge 2 full grains to get the sweet spot back! This is terrible. The guys who make powder for Nobel in Europe are exchanging knowledge with the guys here who build rocket engines for space launches and they can't figure out what everyone else has of how to make consistent lots? I don't understand.
 
Re: 338 thunder pics

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I know some ridicule it as " floor sweepings " but thats ok with me cuz I would hate for it to become difficult to get


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10-4 on that! If it went away, so would a lot of gun's accuracy.
 
Re: 338 thunder pics

Mike,

Need the barrels to be quality to start with. No amount of machining in the world will make up for a poor quality barrel, congrats!! First one I worked with, suspect there will be more on the way in the future!!

Kirby Allen(50)
 
Re: 338 thunder pics

GG,

Glad to hear it. Great finished rifle!

Ya know its always hunting season somewhere!! Thats why I have gotten hooked on hunting exotics. Never claim they are free foaming hunts but they can at times be just as challanging. Hell, your not far from the best exotic hunting, just a couple states away, get to her!!!

Kirby Allen(50)
 
Re: 338 thunder pics

[ QUOTE ]
your not far from the best exotic hunting, just a couple states away, get to her!!!


[/ QUOTE ]

Would this be Texas or New Mexico?
I am going to put in for Oryx in NM next year for sure. That would be a great time! Should we make it a hunting trip?! I'll bet the Allen mag would really put the hurt on 'em.
 
Re: 338 thunder pics

Ok, this is getting spooky. I loaded up three more charges with RL22 and the 225 accubonds just to see how fast they would go and surprise surprise, they shot another teeny little group! That now makes seven different charges with RL22 that put them into the same hole! And no pressure yet! I think I can probably get into the 3400 fps range easily!

RL22 94.5 grains=3251
RL22 95.0 grains=3276
RL22 95.5 grains=3291

3more.jpg
 
Re: 338 thunder pics

GG,
What I'm seeing here is that quality from barrel to quality fit and finish make a difference.

I would almost say, based on my personal experience with one rifle, a factory 338 Win Mag what was a consistent 1/4 MOA at 200yds, that the amount of powder makes "more" difference in group size than does velocity. That may be a bit strange sounding but it was my experience. SDs in the 20s resulted in consistent 1/4 moa groups at 200.

I could then shift the powder weight up 0.5 grains and move the group up and down 0.5 grains and move the group down. While the extreme spread of all three loads spanded the same velocity spread with mean velocities being virtually the same.

However couldn't hit squat at 730 yds due to the different trajectories. I had to find a load with very low SDs to be able to get consistent hits down range.

Ah! its a strange world in which we live. Or as Thomas Paine said, "These are the times that try men's souls."

Is your barrel length exactly 21.75" /ubbthreads/images/graemlins/grin.gif

PS: I was shooting 250s not those itty bitty, varmint type 225s /ubbthreads/images/graemlins/grin.gif /ubbthreads/images/graemlins/grin.gif
 
Re: 338 thunder pics

GG,
Oryx hunts here in NM are free range fun!
I have been on 2 hunts so far and they were both successful.
Too bad I wasnt the guy with the license! /ubbthreads/images/graemlins/frown.gif
They can be hard to draw, but a nice trophy and the best eating game animal I have ever tasted.
 
Re: 338 thunder pics

Went out testing some more today and I have some good news and some bad.

The good news is that the 250 grain Lapua Scenars are shooting great and the best load has been found and tested several times now. Here is a 4 shot group I fired at 1000 yards this morning in good conditions. Normally I don't like to show my ugly mug, but I thought maybe it would give some reference to the size of the gong and the group. THis load was 90.2 grains of Rl22 and gave a velo of 3084 and an sd of 3!
1k90.jpg




The bad news:
The Scenars appear to be a very bad game bullet. Filled a box with newspapers and phonebooks and shot them into it at about 980 yards and here is the result:
notgoodbullet.jpg


As you can see, not much of a mushroom. The tip didn't even start to mushroom. It tumbled through the paper like a mad dog.

It went in this far:
newspapers.jpg



And here is one bullet that skipped through the top of the newspapers and was sitting on top of the burm 20 yards back from the box. It is next to an unfired bullet of the same make.
Still no good! /ubbthreads/images/graemlins/frown.gif
bulletsonglove.jpg



Well, I did manage to get the 225 Accubonds up to and past 3300 fps today with good accuracy though. Time to start working with them I guess. Oh well, the Scenars were fun while they lasted but they obviously would not be good for elk so they're not good for me!
 
Re: 338 thunder pics

God **** thats some good shooting!!! I would go crazy nuts if I got a group like that at 1K. If you entered our 1000 yard tv shoot with that rifle, man you would win easily. Not even a chance in hell I could come close to that, but I'm shooting factory barreled rifles. Oh well, I'll stop rambling. I also have some interesting pics for some to see about the 210g vld at 800 yards, and 150g sbt's.
 
Re: 338 thunder pics

GG,

Good shooting!!

I have never used the Scenar bullets on game so this is just a general comment but do you think that its the dry paper that resulted in this bullet performance.

I have witnessed several times where a bullet fired into dry media did very little but when fired into a media with high water content, bullet performance was a total 180 degree turn around. I have seen this with the SMK bullets.

It seems that with dry media such as dirt, sand, paper and wood that the HPs often get plugged on contact and the result is basically FMJ performance and tumbling.

Just curious what they would do in water soaked newsprint.

Kirby Allen(50)
 
Re: 338 thunder pics

Grouper you're being modest. Since I have been there for just about every shot you have taken with this Green Monster I can vouch for its accuracy. There have been more than one 3 shot group,, under three inches at 1k and and a4 shot group yesterday at 1400 yards that was awsome considering the wind and mirage. You were so bummed out by the bullet performance in the paper you forgot to take a picture of the 1400 yard (prone) group!! Lets try the water soaked media and see if the bullets will open up.
-----RHB-----
 
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