Ultra mags and Berger Bullets

[Backcountry addiction]

How many of you RUM shooters are shooting Bergers at magazine length with good accuracy? ( Sub MOA ) or better . Seems to me that unless you have a RUM custom chambered there is no way to seat bullets any where near the "sweet spot". The RUM's just have too much freebore, .40 if I remember correctly. Bullets are almost completely clear of the case mouth before engaging the lands. Any help would be appreciated. Thanks

 

[Dosh]

We loaded the 215 Berger at mag length in my friend's 300RUM. It shoots sub-1/2 MOA at 200 yds. We tried it seated farther than mag length as a single shot, but the groups were not nearly as tight. Great bullet for the RUM.

 

[jasonco]

The Rem 700 LRH stainless in 300RUM I have prints 1/2" groups very well, with 210 VLDH seated 2.9640" CBTO/3.650" COAL, just below magazine length. Using Norma cases, CCI-250 and Retumbo combination currently and am content keeping the MV at 3050fps right now.

 

[Wedgy]

The 230 OTM seems insensitive to seating depth, I'm at mag length and they are shooting superb. I can run them to the lands but have to single feed.
A RUM isn't like a Weatherby throat.

 

[Varmint Hunter]

I have been using the Berger 250 Elite Hunter in my 338RUM. Loaded to magazine length they are .220" off the rifling. With a favorable load they shoot into 1.5" - 2" at 400 yds.

 

[D.Camilleri]

I had a wyatts 3.8 box installed in my 338 RUM last year. I seat my 300 gr Berger OTM's to 3.800 and I am still .090 off the lands. It is a one hole group though.

 

[MagnumManiac]

I run Berger's in my Edge, I cannot load to mag length @ 3.7" without the bullet ogive being below the case mouth, so I just single load and not worry about it.

I could install a Wyatt's box and load to 4.00" and below, but don't see the point, TBH.

Why can't you just single load, it's not difficult dropping a cartridge on the follower and closing the bolt?

Cheers.
gun)

 

[Farmerbrown32]

I load the 300 berger elite hunter to mag length in my 338 rum sendero with retumbo and it shoots one hole groups. I know i couldnt beleive it either, but it does. Right at 2700 fps.

 

[Backcountry addiction]

Thanks for all the input. I had been working on developing a load with the 175 gr. LRAB's with less than stellar results in my 7 RUM. I however have 2 boxes of 168 VLD's from my 7 RM. So before creating more frustration for myself I thought I'd throw it to the forum for input.. Any one shooting the 7 RUM and 168 VLD's and willing to share some info with a fellow shooter... I know the 7 RUM would benefit much more from the 180's or the 195's. I have a 300 RUM on the way for my Elk work this fall, that will be pushing the 215 hybrids Thanks

 

[Farmerbrown32]

Ive shot the 162 eldx outta my 7 rum with good results, ill see if i can find the load. Shoot the 195 outta it now and that bullet is amazing. Stock remington barrel also with 1-9.25 twist. Shoots the 195 right at an inch which is good enough for a hunting rifle. Shot my antelope at 730 last year with it. Ill get back to you with the info.

 

[WeiserBucks]

I shoot the 180 hybrids in my 7 RUM at mag length. The jump to the lands is substantial, but I'm at 3/4 MOA with very little load development. 86 grains of Retumbo and CCI 250 Magnum primers deliver 3100 fps with no pressure signs .