338 Remington Ultra Mag load data desired

[rednekk1]

light bulbbeen shooting ga33 for years sure looks like 338rum
glad to see 300gr sir, i put them in at 3.7 dident shoot them yet
if anyone knows difference ga33 from 338rum please let me know
92 gr rl25

[captainmike73]

CALL Hodgdon Reloading center theyv'e just tested the new Hybrid 100 in a 338 RUM. Haven't released data on the web site but they'll give you data on the phone.
Mike

[JD338]

Dave,

I am getting sub .5" accuracy and a MV of 2937, ES 14 SD 7 with the Nosler 250 gr AB in my stock M700 LSS using Retumbo.


Here is a link to read-
Nosler Reloading - ammunition, hunting, shooting, and performance reloading expertise from the source.

FWIW, the same Retumbo load with the 250 gr PT yielded an avg velocity of 3024 fps from my Oehler 35.

JD338

[wapiti1gw]

Who says Ruger #1's aren't accurate? I had my #1 338 win. mag. re-chambered to 338 RUM and consistantly print under 3/4 inch groups with a 200 gr. Nosler Accu-Bond and 96 gr. of 7828. And I get 3280 f.p.s. over a pro-chrony. At 2" high at 100 yds. this gives me a no hold over on Elk out to almost 400 yds. But, even in the heavy #1 I found that a good brake made it a lot more shooter friendly. 7828 was significantly faster than either rl-25 or h-1000. Give it a try. Gerry Wood Cody, Wyoming

[shanethomas28]

just had a 338 rum built 26 inch broughton barrel 1 to ten twist i am now trying honady 225gr sst with reloader 22 i cant get smaller that a one inch group with the first cold bore shoot bout 4 inches to the left at 100 yrds. was hoping to have a long range gun using winchester primers any suggestions

[sacooley]

Hey Guy's Just trying to get a BUMP start on this old thread.

Any new Berger 300 OTM Tactical Load data for the 338 RUM?

I thought I would keep this post going because, you really don't find much on the load data of these big boy's.

I have some of the OTM's I'm just trying to get the rifle put together, For some good spring spring.

SC

[mcharger440]

ok guys I have read from first post to last post I am trying to grasp how a longer barrel changes my velocity I get the physics side but how will my charge likely vary from someone with a 26" barrel I have a 31" barrel on my 338rum with a custom throat for a 4.088 Col (single shot) I'm thinking I need a slower powder is this accurate
thanks