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338 Uttra mag average velosity

 
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  #1  
Old 04-22-2012, 08:10 PM
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338 Uttra mag average velosity

I just picked up a LH 338 ultra. 26" barrel. I have H-1000 and RETUMBO. I will start with the 300gr Sierra. So what is the average velosity with the 300gr. I had the stock beded and the triger work on. I have a 338 ax so i don't nead any info on a Lapua. Also the barrel is .700 at the muzzle can a muzzle brake be put on that light of a barrel ? All my custom barrel are .750 or larger. If the rifle shot good with the factor barrel i would like to brake it. If not i will rebarrel it and put a brake on it. I got this for a light pack rifle. Thanks for your info. Joe
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  #2  
Old 04-22-2012, 08:42 PM
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Re: 338 Uttra mag average velosity

factory 26" tube. 94grians Retumbo, 300 SMK @2830-2850 (depending on elevation)
pretty hot load but I cant stop shooting it when the first three go into one hole. After the first three it starts to open up a bit, but its a flimsy tube. Start at 90grns.
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  #3  
Old 04-22-2012, 09:27 PM
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Re: 338 Uttra mag average velosity

Quote:
Originally Posted by angus-5024 View Post
factory 26" tube. 94grians Retumbo, 300 SMK @2830-2850 (depending on elevation)
pretty hot load but I cant stop shooting it when the first three go into one hole. After the first three it starts to open up a bit, but its a flimsy tube. Start at 90grns.
Man thats fast out of a 26" i hope mine will get close to that i got to get out and shoot it.
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Old 04-22-2012, 11:23 PM
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Re: 338 Uttra mag average velosity

Quote:
Originally Posted by angus-5024 View Post
factory 26" tube. 94grians Retumbo, 300 SMK @2830-2850 (depending on elevation)
pretty hot load but I cant stop shooting it when the first three go into one hole. After the first three it starts to open up a bit, but its a flimsy tube. Start at 90grns.
Not at all trying to cause friction. +2800fps with a 300gr out of a 26" barrel is pretty amazing. I would say that speed is not the norm by a lot. If you are getting it at even hot pressure then good on ya and keep at it.
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Old 04-23-2012, 12:06 AM
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Re: 338 Uttra mag average velosity

WOW! I was getting 2800fps at sea level with h1000 91.0gr but it was with a 338-300 RUM aka EDGE in 30" pipe!

but,it can happen,some rifles shoot fast,some don't.

I see 2750 being adv/max out of a 26" tube in a 338 RUM. 5000ft/lbs of energy is hellava punch to me!

Im gonna have a 338 RUM built in a short/carry rifle 24"bbl. hope to see 2650-
2700fps with 300gr.
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  #6  
Old 04-23-2012, 12:56 AM
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Re: 338 Uttra mag average velosity

I have a remington 26" 338 RUM that will shoot the 300's to 2800 fsp however the best accuracy is in the mid 2700's with it. That is average. I shoot the lighter bullets in it for hunting though.
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  #7  
Old 04-23-2012, 07:10 AM
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Re: 338 Uttra mag average velosity

It may be that my cheap chrony is giving me a higher reading, but it says the same thing every time. I wouldnt care if I was getting 2700 fps, but she likes em warm i guess.
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