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Reloading Berger Bullets


how much more velocity?

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Unread 12-25-2011, 08:11 AM
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Join Date: Jun 2011
Location: WY
Posts: 178
Re: how much more velocity?

I agree with the first response. Typically, you should see "roughly" equal incremental increases in velocity with incremental increases in powder charge. When velocity stops increasing with increased charges, it might be time to go the other way. That is if your ES isn't too extreme.
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Unread 12-25-2011, 10:30 AM
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Join Date: Jan 2009
Location: GSP, SC, USA
Posts: 643
Re: how much more velocity?

Originally Posted by Long Time Long Ranger View Post
Ok, I feel better now to. That would be scary pushing a 300 grainr like that in the 338 RUM particularly if it is the new H-1000. My load was with the old powder and although I am still using it and have notthe new I hear you will not load 93 grains with the 300 any more. shot That sounds like a good load for the 265 and you could go up 1/2 grain at a time there and see what you get. I have got some very good results with that bullet.
LTLR or any one else hear any more poop on powders or primers that have noticeable changes? GOOD INPUT-MERRY MERRY AND HAPPY HAPPY!

Len / Dick: Would we want to have a pinned post that people could add powder or primer possible "changed conditions" too. Might save a life?
"I'm better when it's breathing" Chris Kyle
NRA Life Member 1970
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Unread 12-25-2011, 02:31 PM
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Join Date: Mar 2002
Location: Wyoming
Posts: 2,612
Re: how much more velocity?

The new batches starting maybe two years ago now of H-1000 are faster than the older batches I worked with developing loads for the 338-300 RUM back in the late 90's and the 338 RUM when it was introduced in 2001. Many guys work near max and the old 93-94 grain load with the 300 grain bullet could be very dangerous with the new H-1000 powder from what I hear. As I said I have not used the new powder but have read many times on here where it is faster by 3+ grains which is enough to be dangerous.

Other powders you need to watch out for are the old H-870 and accurate 870 which can vary by nearly 10% batch to batch and with temperature. Buy it by the keg so your load will be good for awhile and not have to change it with every pound of powder you open. H-1000 did well in a number of cartridges so I bought a few kegs and still using it. I think the new batches may be to fast for most purposes I use it for now.
Predictions are difficult, especially when they involve the future
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