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Here's a question about the 338 caliber

 
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  #8  
Old 06-23-2010, 06:34 PM
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Re: Here's a question about the 338 caliber

Freebird63, You mentioned, a bullet with a high BC pushing a mile to mile and a half. That's 1760yards to +2600 yards. In that case then I'd suggest the 338 Allen Magnum. Peresonally the 338AM is too much for me so I opted for the 338AX but, then again I'm not looking to shoot close to a mile or beyond.
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  #9  
Old 06-23-2010, 10:17 PM
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Re: Here's a question about the 338 caliber

.338 RUM- most economical big .338 to shoot, and does hand in with the edge and Lapua. I have one, but am not profficient to even 800 yards yet with it, 400 yards shy of hunting potential.good in a sporter wieght rifle. 2700-2800fps.

.338 EDGE- If your going econonmy custom, the way to go. out does the .338 RUM by about 100fps depending on if its a fast or slow barrel. it also has good barrel life and brass is on the cheap side. good in a sporter wieght as well.
2750-2850fps.

.338 Lapua- performs somewhat similar to the edge on a shorter fater case. it is easier to have a slightly longer COAL. with the fatter case comes the issue of only the beefy actions can handle it (IMO). Brass is extremly good but pricey. 2750-2850

.338 Lapua Imp.- you gain a fair amount on the Lapua like JE CUSTOM said. IMO if one were to build on a Lapua case I would go with the Imp. should get you around the 3000 Fps mark.

.338-.378 Wby- Fat, Long and can only be handled by the beffiest factory action and good customs. the Wby Mark 5 is the action of choice for this one. decent brass but pricey and a long COAL but your in with th big boys now. 3100 fps with the 300SMK.

.338 Allen Mag.- The heavywieght .338. based off the .408 Chey-Tac and is Kirby Allens monster. It will be about the fastest thing in .338 and will drive a 300 SMK @ 3400 fps. Hard on barrels but a true 1.5KM+ cartrige. BIG CUSTOM ACTION ONLY. pricey but sweet... i want one.

There are a few in between, but those are the main ones. Kahn, Excalier, .338-416 Rigby Imp. are in there if you wanna look them up. I'm sure that LTLR will come chip in, listen to him when it comes to .338's.
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  #10  
Old 06-23-2010, 11:09 PM
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Re: Here's a question about the 338 caliber

I agree with Chas1 and Angus. If you are looking at shooting a mile or further the three you listed are not for you. Kirby's chey-tac based 338 and several other wildcats based off the chey-tac would be the best. If not then the excalibur or a improved 378 or rigby case. I have never met Kirby but through exchanging emails and on here I can tell you he has put a lot of work into his version to make it as good as there is out there. Like these guys said, a Kirby built 338 off the chey-tac would be my dream rifle for extreme long range.

But if I were you I would get some 177 grain GS bullets with the high bc (mid .6's) and drive them 3450+ fps. They will easily get you 1200 yards at big game. Other than an extreme specialty rifle what else do you need. I shoot a 208 Amax in my 300 ultras at 3225 fps and again it is good to 1200 yards I would think. I was busting rocks across a canyon at 1500 yards with it. Also I shoot 200 grain accubonds in mine at 3250 fps and again I know it will kill big game at 1200 yards.

When your barrel burns out call pac-nor and order a 338-300 ultramag barrel and screw it in. Then your good to go again at 1200 yards just with more thump when it gets there. I built 50-75 338-300 ultramags with pac-nor barrels and the quality/accuracy is excellent. Chris runs a very good shop with as good a quality control on metal work as I have seen.
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  #11  
Old 06-24-2010, 01:26 AM
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Re: Here's a question about the 338 caliber

Can you give me your details with your 208 A-Max load, I do like those. Just loaded up the last of mine tonight, but am not going to waste any more powder or bullets until I can get the trigger worked over or a new one, my stock trigger sucks and I don't feel I can be very accurate with it.

Last edited by freebird63; 06-24-2010 at 05:40 PM.
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  #12  
Old 06-24-2010, 03:47 PM
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Re: Here's a question about the 338 caliber

I shoot 106 grains of H-870 which gives an average muzzle velocity of 3226 fps in my 28" Hart barrel 300 ultramag with Sako action (1-10 twist). It averages a little under 2" groups at a quarter mile.
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  #13  
Old 06-24-2010, 10:01 PM
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Re: Here's a question about the 338 caliber

LTLR, am I reading your post right that your loading a 300 ultramag with 106 grains?
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  #14  
Old 06-25-2010, 12:22 AM
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Re: Here's a question about the 338 caliber

Went back and checked my data. That is what I have as my best load with the 208 Amax in that rifle.
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