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Struggling with my 300 RUM

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Unread 04-23-2011, 06:37 PM
Bronze Member
Join Date: Jul 2010
Location: Alamosa
Posts: 37
Struggling with my 300 RUM

Last fall I bought a Rem 700 SPS in 300 RUM. I bought dies (20+ years reloading), powder, and brass to start with. I haven't been able to get it to group inside of 3". I have loaded RL-22 with 180 gr B-tips from 92 - 98 grains with no good results. I switched to Retumbo and have loaded from 96-100.5 grains with the same results. I have some test loads ready to go with RL-25, 94,95 and 96 grains. I bedded the action and floated the barrel before the first shot. The only equipment issue I can think of is that it only weighs 7 lbs scoped and kicks like a freakin' mule. I have a nice bruise on my nose from this mornings range outing. Would a heavier stock help me here. I think I'm starting to flinch from the repeated knocks to the head.
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Unread 04-23-2011, 07:18 PM
Bronze Member
Join Date: May 2010
Location: Colorado
Posts: 57
Re: Struggling with my 300 RUM

From what Ive read over the years, this caliber can be fickle at times, with some guns liking way different loads then others. I had lousy results with my brass I acquired from factory loads. I finally bought new remington brass, trimmed to 2.840 after sizing. I loaded H1000 and 180 gr BT's, and got acceptable results, by far better then with the fired brass. I tried 200gr partitions, with retumbo, and went with 91, 93, and 94 grains. 94 shot by far the best, putting 3 into a ragged hole, and the fourth shot off a little(prolly me or the wind we had). Next outting Im going to go a little more, and see if groups open up or not. Some guys have had great luck with rx22, or 25, while others have had success with H1000, or retumbo. Im seating all the way out to 3.600" so it will still fit in the magazine. As you noted, these things kick like heck. If you are still sporting the stock recoil pad, you might consider throwing it away and getting a limbsaver or pachmayr for it, or the upgraded remington pad. It'll make a big difference. I pitched my plastic stock(model 70 classic stainless) with its hard rubber pad, and got a real nice wood stock from CDNN. The pad is alot better on it, added some weight, and now kicks only marginally more then my wife's Xbolt 300 win.
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Unread 04-23-2011, 07:21 PM
Silver Member
Join Date: Oct 2010
Location: Watertown, SD
Posts: 322
Re: Struggling with my 300 RUM

Check your scope for tightness and to see if it is still good, since you stated that it kicked like a mule, are you getting recoil shy and flinching?
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Unread 04-23-2011, 08:31 PM
Platinum Member
Join Date: Jan 2008
Location: Falls Church, VA
Posts: 3,474
Re: Struggling with my 300 RUM

If you intend to keep the rifle in its current configuration, go over every single screw and make sure they are torqued appropriately (bases, rings, action screws).

Be sure you are shooting from a rock-solid rest.

7lbs!! holy-crap! My 300RUM started life at 9lbs and it recoiled so hard that I didn't want to shoot it after three rounds. I would suggest you upgrade your stock and find a way to add some weight.
I'm not gonna shoot here. I'm gonna shoot waaaaaaaay over there!
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Unread 04-23-2011, 09:01 PM
Platinum Member
Join Date: May 2008
Location: South of Canada and North of Wyoming
Posts: 6,068
Re: Struggling with my 300 RUM

First off, the SPS is not designed to be a precision rifle by any stretch of the imagination. If you call Remington and tell them you're getting 3" groups with your SPS, they will not be real concerned about that, especially if you tell them you've been handloading. It could be your scope and it could be a little flinch, but if you have 20 years of handloading experience, I'm guessing you know how to mount a scope properly... maybe the scope itself is taking a beating? What scope do you have?

On the recoil.... I use a slip-on recoil pad with my Sendero 300 Rum (which is 1 1/2 lbs heavier than the SPS) and I can shoot my RUM all day, no problem.

Back to the basics... the SPS is NOT a precision rifle and Remington doesn't advertise as so. They do build some good shooters like the Senderos, but for the most part, they are not concerned with sub MOA performance. I have a Sako 300 WSM that shoots like crap, so I know how you feel. At least you paid less for your headache than I did.

If you want that Rem to shoot, get rid of the barrel and get rid of the stock, and maybe get rid of the bolt... and maybe get rid of the trigger - I got my Rem triggers breaking very nicely at About 1 1/12 - 2 lbs.

Probably not what you want to hear... but there it is...
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Unread 04-23-2011, 10:17 PM
Gold Member
Join Date: Oct 2006
Posts: 870
Re: Struggling with my 300 RUM

I have used 7828 with the 180 BT's with good success. How did the barrel break in go? Was it fouling a lot or getting a lot of copper? Does it feel consistant the entire length with a real tight patch? How is the run out on the fired cases compared to the new loaded rounds? Do you know anyone that has one of those lead sled setups? I don't really like them but I have a couple friends that use them for thier light mag rifles when working up loads.
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Unread 04-23-2011, 10:38 PM
Gold Member
Join Date: Dec 2009
Location: Boise, Idaho
Posts: 537
Re: Struggling with my 300 RUM

Here is my current hunting load,
Remington case
federal 215 primer
99gr Retumbo
180gr hornady SST
Seat at OAL of 3.600

Barnes 180gr TTSX shoot about the same for me.
Accubond 180gr with IMR4350 is a pretty good shooter
Accubond 200gr with Retumbo is another good shooter.
I am shooting a sendero, I installed a jewell trigger and a wyatt extended magazine box.

I have some hornady 225gr match bullets loaded up for a possible target load as well as some 240gr SMK's These two bullets will be nothing more then my 1000 yard target loads.
I am either going to stick with 180 SST's or might have some more work done to my gun and have it chambered for berger 210's or maybe 208gr hornady A-max bullets. A-maxes have a higher BC then the bergers.
Good luck, you will get some good intel here on this board.
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