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300 RUM Load development*group pics added*

 
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  #57  
Old 08-10-2011, 03:43 PM
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Re: 300 RUM Load development*group pics added*

For what its worth my stock 300 ultra never shot any better than the groups you have shown. Thats why I put on a new barrel. I tried so many powders and bullets also. I showed pressure signs at 87.5 gr of rl 25. Ejector marks and cratered primers. H1000 shot better, Retumbo and 200 gr Accubonds is my go to round now. Believe it or not the gun shoots best with 4350 and 180 partitions. Just doesnt have the speed I was looking for. I might as well shoot a 300 win with that load. I know I will get bagged on for this but every person I know that uses a 300 ultra has said it doesnt seem to be an accurate caliber. Just sharing..
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  #58  
Old 08-10-2011, 03:47 PM
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Re: 300 RUM Load development*group pics added*

Well that doesnt make me feel any better haha! I am gonna keep on trucking a new barrel will be in the works if i dont find something that works
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Anything less than overkill is underachievement!

" Real elk guns start with the number 3 or bigger and blow two holes, one in and one out." - My Dad
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  #59  
Old 08-10-2011, 03:54 PM
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Re: 300 RUM Load development*group pics added*

Try a partition. I have never seen a gun that doesnt like those.
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  #60  
Old 08-10-2011, 04:44 PM
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Re: 300 RUM Load development*group pics added*

Quote:
Originally Posted by Tikkamike View Post
Although I love SMK bullets dearly, I am looking for an elk thumper. The way I have it set up is with a zeiss rapid z 800 (800 max range) so I want a fast hard hitting well constructed hunting bullet. Hence the reason I chose the 200 LRX. I have my 338 shooting 300 SMK's at a slow 2750 FPS for long range im looking at this project as my mid range thumper.

Hey Mike.. sorry you're having trouble w/ the LRX. I just got a 300 RUM last fall so been doing some load development for elk season. It's a stock rem 700 (XCR II); only upgrade is a B&C medalist stock. Anyways, I started with the 180 gr. TTSX; both velocity and accuracy looked promising from the start using Retumbo. Shortly after, Barnes came out w/ the 175 gr. LRX with better BC numbers, so I started development for that (I'm a Barnes guy). Long story short, the 175 gr. LRX's shoot 1/2" group @ 100 yds. Velocity was an honest 3400 fps w/ a 3 -shot E.S. of 4 fps (again, using Retumbo). Needless to say, I was blown away.

I dont have any data in front of me, but if you're interested in either of the two (180's or 175's) I'd be happy to share. The combination of RUM case capacity and Barnes bullets can make troubleshooting very $$$.
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  #61  
Old 08-10-2011, 04:53 PM
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Re: 300 RUM Load development*group pics added*

thats a generous offer, I have about 50 different possibilities in my head right now. I am not saying I wont use 175-180's cause that very well may be where I end up. But for now I am going to exhaust the 200 lrx untill i feel I can honestly say its not going to work. I think I will try a few other bullets in the mean time to see if ANYthing will group at all so I know its the load and not that the rifle is just incapable. So thanks for the offer but ill just stick to what i have on my bench for now
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Mike

Anything less than overkill is underachievement!

" Real elk guns start with the number 3 or bigger and blow two holes, one in and one out." - My Dad
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  #62  
Old 08-10-2011, 05:06 PM
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Re: 300 RUM Load development*group pics added*

Makes sense to me Mike, let me offer you one of my past "oops" so you don't make the same mistake.

If you intend to shoot different style bullets i.e. conventional, take the extra time to scrub ALL of the Barnes out of the bore first, I can't even describe how badly it can foul when you mix the two different hardnesses of copper together.....your arm will fall off before you get all of it out!
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  #63  
Old 08-10-2011, 05:08 PM
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Re: 300 RUM Load development*group pics added*

Noted
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Mike

Anything less than overkill is underachievement!

" Real elk guns start with the number 3 or bigger and blow two holes, one in and one out." - My Dad
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