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| Both are great powders for that cartridge. Try both to see what his gun likes. I like CCI and Winchester primers myself, but the Federals should work fine. Check out the link below. It shows what many different guys are using for this gun. Be cautious though and don't take their numbers for granted. http://www.loadyourown.com/loaddata/sresults.asp |
| Posts: 445 | Location: Connellsville, PA | Registered: 25 April 2002 | ![Reply With Quote Reply With Quote](https://forums.accuratereloading.com/groupee_common/ver1.3.7.2147483647/platform_images/blank.gif)
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| Frank, I've had some limited experience with my .300 ultra. I'ts a M700 BDL in SS. Mine shows a preference for RL22, 215 primers, with 180g bullets. Seems that it shoots well just under max loads, in the area of 3250FPS. I've shot Balistic tips, Sierra Gamekings (boat tail), Partition & Partition Goilds thru it with most loads sneaking under 1 MOA. Right now I'm blueprinting the action, gonna put a Lilja barrel on it with a tight neck/ short throat. Al |
| Posts: 108 | Location: Mid Michigan | Registered: 28 December 2001 | ![Reply With Quote Reply With Quote](https://forums.accuratereloading.com/groupee_common/ver1.3.7.2147483647/platform_images/blank.gif)
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| Posts: 445 | Location: Connellsville, PA | Registered: 25 April 2002 | ![Reply With Quote Reply With Quote](https://forums.accuratereloading.com/groupee_common/ver1.3.7.2147483647/platform_images/blank.gif)
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| Here's my personal fave...180gr. Sierra MK or Pro Hunter...RL25 93.2gr. Fed.215M primer..and BOOM!! Bullseye.. I have been working w/ Retumbo also...have not found a good load yet....sakofan.. |
| Posts: 1379 | Location: North Carolina | Registered: 11 March 2003 | ![Reply With Quote Reply With Quote](https://forums.accuratereloading.com/groupee_common/ver1.3.7.2147483647/platform_images/blank.gif)
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| RL25 and lots of it. |
| Posts: 286 | Location: Gladdice,Tn | Registered: 17 January 2003 | ![Reply With Quote Reply With Quote](https://forums.accuratereloading.com/groupee_common/ver1.3.7.2147483647/platform_images/blank.gif)
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| My own rifle likes 96 gr of reloader 25 behind a 180gr bullet and delivers 3375fps.Even a reduced load will easily produce around 3300fps. |
| Posts: 3104 | Location: alberta,canada | Registered: 28 January 2002 | ![Reply With Quote Reply With Quote](https://forums.accuratereloading.com/groupee_common/ver1.3.7.2147483647/platform_images/blank.gif)
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| I just found some other info on my 300 RUM... 89.0gr. IMR 7828 Fed. 215M primers Hornady SST 180gr. This load was kinda a fluke. I bought the SST's for anougher rifle, and just for kicks loaded some rounds for my UM. This combo has produced 1/2in groups at 100yds, easily. My UM also does not like near max loads, as some people I know have used up to 100gr. of RL25. My bolt got sticky at 94gr....go figure....sakofan... |
| Posts: 1379 | Location: North Carolina | Registered: 11 March 2003 | ![Reply With Quote Reply With Quote](https://forums.accuratereloading.com/groupee_common/ver1.3.7.2147483647/platform_images/blank.gif)
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| sakofan-If your bolt gets sticky you are at the maximum load.Each rifle has it's own maximum load that can vary a great deal from the loading manuals. |
| Posts: 3104 | Location: alberta,canada | Registered: 28 January 2002 | ![Reply With Quote Reply With Quote](https://forums.accuratereloading.com/groupee_common/ver1.3.7.2147483647/platform_images/blank.gif)
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| Mine likes 95 grains of Reloader 25 with CCI 250 primers. I do not have signes of excessive pressure and have loaded it hotter but 95 grains has worked best for me. My velocity was around 3350 fps.
I have some 7828 on the shelf but I have never tried it. I think Nosler recommends 89 grains with 180 grain bullets as a most accurate load.
You go through powder cans fast though. |
| Posts: 968 | Location: British Columbia | Registered: 29 May 2002 | ![Reply With Quote Reply With Quote](https://forums.accuratereloading.com/groupee_common/ver1.3.7.2147483647/platform_images/blank.gif)
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| stubblejumper, yes, I realize I was at max. load. I was just stating that some others w/ the same rifle, have been able to load more powder. My 300RUM, never has liked near max. loads. And that's good!!....sakafan.. ![[Wink]](images/icons/wink.gif) |
| Posts: 1379 | Location: North Carolina | Registered: 11 March 2003 | ![Reply With Quote Reply With Quote](https://forums.accuratereloading.com/groupee_common/ver1.3.7.2147483647/platform_images/blank.gif)
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| Not to change the subject, but have you guys taken a look at that new 200gr. Accubond from Nosler? It's got a B.C. of .588. That bullet could very well be tailor-made for the RUM case. |
| Posts: 926 | Location: pueblo.co | Registered: 03 December 2002 | ![Reply With Quote Reply With Quote](https://forums.accuratereloading.com/groupee_common/ver1.3.7.2147483647/platform_images/blank.gif)
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