Need help with a 338RUM

[RDM416]

Marriedman,

My HS Precision 338RUM shoots 210 Barnes TSX's (93grn RL25, fed 215s) very well. They may not be the best in the BC catagory but they shoot well. I could not get it shoot good at all with the Scirroccos. If you are interested in a heavier bullet try the 250 SMK.

 

[JD338]

RDM416,

What kind of velocity and accuracy are you getting with
RL-25 and the 210 gr bullet?

JD338

 

[RDM416]

JD338,

I am getting 3250fps with the 93grn of RL25. My rifle has a 28" barrel. Groups at 100 are in the 1/2" range.

I might be able to squeeze a little more speed and possibly a little better groups by taking the time to play with more. I bought this rifle specifically for a sheep hunt I went on in 05. It was late coming in and I had 3 days to get a load worked up for it. I tried the Scirocco's and they did not shoot good (1 1/2" groups), tried the 210TSX and they were acceptable, so I loaded up a bunch and went on the hunt.

I have two 338 Kahn's that Kirby built for me. When it is time to go hunting one of those is what I reach for. As a consequence the RUM has gotten very little attention. One of these days I will do another serious mountain hunt where I want the lighter rifle and will get the RUM tweaked in. But until then it shoots plenty well for blasting yote's out the back door /ubbthreads/images/graemlins/cool.gif

 

[JD338]

RDM416,

Thanks for the G2.
I have some good load data for 200, 210, 225 and 250 gr loads. Let me know when you are ready and I will pass the load data on to you. /ubbthreads/images/graemlins/grin.gif

JD338

 

[Randy338]

Please send me your info on the loads.

 

[JD338]

338 RUM Load Data

Here are the loads that I am using in my M700 LSS 338 RUM w/ a Leupold VXIII 2.5x8 scope. I am using R-P brass and Federal GM215M primers.

200 gr BT
RL22 90.0 grs
best 3 shot group @ 100 yds .325"

200 gr AB
RL22 92.0 grs
best 3 shot group at 420 yds 2.265" (2 shots were .507")

210 gr PT
RL22 92.0 grs
best 4 shot group @ 100 yds .425"
best 3 shot group @ 300 yds 1.285" (2 shots were .590")

225 gr PT
RL22 90.5 grs
best 3 shot group @ 100 yds .450"

225 gr AB
RL25 96.0 grs
best 3 shot group @ 100 yds .567"


250 gr PT
RL25 90.0 grs
best 4 shot group @ 100 yds .490"

COL is 3.665" which is just under maxium magazine dimensions.

JD338

 

[RDM416]

JD338,
Thanks for sending your data on the RUM. I'm printing the page now to put with my loading data for reference when I start playing with the RUM again. You are probabably get quite a bit more speed out of the 210s since you are using almost as much RL22 as I am RL25.

I will probably go with the heavier bullets though. After much prodding from guys who know a lot more about this long range stuff than I, I have fianaly gotten off the speed freak bandwagon and started using heavy bullets.

Richard (Wildcat bullets) is finaly back on line with .338 cal bullets. I have some 325s, and 300s coming in from him. He is also now making 350s and 375s for .338. I think I'll order some of those to play with as well.

 

[JD338]

RDM416,

Glad to help. Those Wildcat bullets intrigue me. Any load data you can share would be greatly appreciated.

JD338

 

[RDM416]

JD338,

I have not shot any of his bullets yet. As soon as I get these in that I have ordered and get some range results I will post my findings

 

[JD338]

RDM416,

Thanks bud.
Happy Holidays to you and your family.

JD338

 

[shawn68]

what are you doing for case prep? Are you sorting by weight? Primer pockets done in and out? Turning case necks? Full length sizing or neck sizing?