338 Remington Ulta Mag

06 September 2001, 23:24

Gentlemen,

I am in the process of getting our 338 RUM rifle for some load development.

The rifle we have is the standard Remington 700 BDL. I am going to adjust the trigger and replace the wood stock that came with it. And hopefully do a better bedding job than the factory normaly does.

We have the following bullets:

160 Barnes X
185 barnes X
200 Nosler ballistic Tip
210 Barnens XBT
215 Sierra SP
230 Winchester Fail Safe
250 Sierra SP
275 Speer African Grand Slam
300 Sierra Match King

I will keep you all up to date on our progress.

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saeed@ emirates.net.ae

www.accuratereloading.com

07 September 2001, 06:34

<Guy>

Thanks Saeed, I have a 338 Ultra in a Mod 700 Sendero so I am excited to see what you come up with.

Thanks

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07 September 2001, 07:06

Rob1SG

Great, How about some reduced loads for range practice or for a whitetail hunt.

07 September 2001, 07:16

p dog shooter

Rob1SG Reduced loads then why buy a big one . Get a 338 06 or a 338 win mag there are plenty of little guns out there. You buy big guns to shoot big loads.

07 September 2001, 07:34

Nickudu

Saeed,
Please, also make up some plastic sabots to house the old 55 grain Nosler Zipedo bullets and give me the loads for top velocity prior to my end of season woodchuck hunt next Sunday morning.

Thanks .... Nick

07 September 2001, 12:58

<38Special>

.... looking forward to the results on the Nosler 200BT and potentially a couple of reduced loads that work well.

07 September 2001, 13:39

<R. A. Berry>

Wow, nice spread of bullet weights. I too look forward to the data to add too the treasure trove.

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Good huntin' and shootin',
RAB

07 September 2001, 16:45

<sure-shot>

Saeed, like to see the Nosler 210 Partition added to your list. Would you consider?

Thank you,
sure-shot

08 September 2001, 03:49

Rob1SG

P-Dog shooter,

Reduced loads can work to do several things.
1. Increased practice with the rifle without getting the recoil and barrel wear will assist you in becoming familiar with a new rifle.
2. Allow you to hunt game which doesn't need a full power load.
3.Allow you to adjust your load to max accuracy of the rifle.
I'm sure many other reasons.Enough on this subject.

08 September 2001, 04:19

<Bruce Gordon>

OUCH!!! 300 grain bullets with 100 grains of powder in a 8 1/2 pound rifle off the bench for extended load development. Even with taking a break after each three shots that would have to hurt. My shoulder is hurting in sympathy just thinking about it.

08 September 2001, 08:36

<RUM>

I can imagine it, but it would be pretty bad.

I have been averaging 80-100 rounds a month with my Sendero SF shooting the 250 gr. A-Frames. On a postive note my accuracy with my 454 Cassull has never been better -- seems like a 22LR by comparison.

Has anyone tried using one of those rests that have a support for the butt of the stock? Seems like it might be worth it for load development...

quote:
Originally posted by Bruce Gordon:
OUCH!!! 300 grain bullets with 100 grains of powder in a 8 1/2 pound rifle off the bench for extended load development. Even with taking a break after each three shots that would have to hurt. My shoulder is hurting in sympathy just thinking about it.

08 September 2001, 17:14

Saeed

Gentlemen,

I have found an H-S Precision stock similar to the one that is on the 300 Ultra we shot earlier.

I will put this one on this rifle.

To answer some of the questions asked by some of my friends here.

I do not have any sabot I am afraid. In fact, if someone will tell me who makes them and where I can get them, I would appreciate it.

Nosler 210 partition. I do not have this one here, and have no idea when we might get some.

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saeed@ emirates.net.ae

www.accuratereloading.com

09 September 2001, 02:18

<phurley>

Saeed -- I am also replacing a custom wood thumbhole stock on one of my rifles with an H-S Precision stock in anticipation of Alaskan rains. Knowing that Remington used the H-S Precision stocks for the Sendero, I am wondering why you are replacing it with another H-S Precision stock. I realize you have a good reason and it may help me in my project. Good Shooting.

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09 September 2001, 18:09

460wby

Saeed, my friend.
I hope you don't get frustrated by all the bullet-suggestions.
I think you have a fine spread in bulletweights, and types, as it is. We will have to do SOME work ourselves, to.
BUT can you please try..............??
(just kidding!)
(No offence to the "wishers".)

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Shoot well, and hit hard.

Arild.

10 September 2001, 09:22

Saeed

Phurley,

The 300 RUM we have has an H-S stock on it, the 338 has teh standard Remington BDL wooden stock.

That is why I am replacing it.

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saeed@ emirates.net.ae

www.accuratereloading.com

10 September 2001, 02:17

<phurley>

Saeed -- Thanks for the info, somehow I assumed the Rum had an H-S Precision already, the fact it didn't makes since to replace it. Let us know how it shoots. Good Shooting.

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10 September 2001, 02:49

Saeed

We have started load development for the 338 Remington Ultra Mag.

We are using Remington brass and the Federal 215 primers in all our loads, and all groups are 3 shots at 100 yards.

Barnes 160 X and VVN 560

87.0 - 2991 - 2.146
89.0 - 3086 - 1.546
91.0 - 3135 - 1.728
93.0 - 3204 - 1.624
95.0 - 3269 - 2.065
97.0 - 3332 - 1.722
99.0 - 3431 - 1.328
101.0 - 3521 - 2.004
103.0 - 3600 - 2.268

With VVN 165

92.0 - 3099 - 2.354
95.0 - 3228 - 2.135
97.0 - 3327 - 0.543
99.0 - 3443 - 0.414
101.0 - 3517 - 2.139
103.0 - 3594 - 2.635

Barnes 185 XBT and VVN 165

92.0 - 3168 - 4.160
94.0 - 3230 - 2.649
96.0 - 3307 - 4.271

I will keep you posted as we go along.

[This message has been edited by Saeed (edited 09-18-2001).]

10 September 2001, 14:31

<Don G>

Saeed,

Now those numbers match MY experience with the Barnes X in factory barrels!

Too bad you don't have any GS Custom HV bullets to try...

Don

17 September 2001, 22:13

460wby

And then??
(I'm an impatient, son of a bitch.)

------------------
Shoot well, and hit hard.

Arild.

18 September 2001, 16:44

MADDOG

Saeed; Do you have any reference to 225 or 250 gr. Bullets. Do you think that the 338 ULTRA will out perform the Proven .340 Weatherby??? I am having a new gun built this winter and this info is vital to my decision of cal. Thanks in advance MD

18 September 2001, 17:46

Saeed

460Wby,

I am going to get back to shooting this one this week. Sorry about the break.

We have a hunt coming up in a couple of weeks time, and have to get that orgenised.

Maddog,

You will have to wait and see what our results might turn up. But, I would imagine that the 338 RUM will do anything the 340 Weatherby every did - ballistically.

In the real world, I doubt very much that you will find that much difference in their performance on game.

------------------
saeed@ emirates.net.ae

www.accuratereloading.com

19 September 2001, 12:54

<NitroHunter>

I too am searching for Reduced load information for my .338 UM. I would like to find something around 160gr./1600fps or so.
'Perfect' Practice makes perfect, and how better to become comfortable with any rifle than this? It worked miricles with my .375.
FYI - When "X" marks the spot, have you EVER really noticed recoil?

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NitroHunter

25 September 2001, 09:51

460wby

Just bringing it back on top.

25 September 2001, 05:44

ready_on_the_right

Amazing how much bigger the groups are in this rifle compared to the .300 Ultra!

mike

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Victory through superior firepower!

25 September 2001, 23:42

<Eric Leonard>

ROTR bet that will change when he gets away from the X.

03 October 2001, 03:45

460wby

I'm waiting for the bulletweights that the 338 RUM really is built for; 225, 250, and 300 grs.(And maybe 210 grs.)
Are you out killing again, Saeed??

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Shoot well, and hit hard.

Arild.

[This message has been edited by 460wby (edited 10-02-2001).]

03 October 2001, 04:17

Canuck

quote:
Originally posted by 460wby:
Are you out killing again, Saeed??

Saeed left yesterday for Zimbabwe. He'll be back in a little over 3 weeks. I don't think he had a chance to finish load development on the .338RUM before he left.

We'll just have to wait.

Regards, Canuck

03 October 2001, 20:50

460wby

OK!!
Is there a reason with any value in it?? A hunting trip, must be it!!

Arild

05 October 2001, 14:57

Cheaha

H-1000 and Vit N-560 both work great in my rifle. With the 185gr Barnes XLC,103grs of H-1000,I'm getting 3300fps and three shot groups at .5MOA. I had to play with seating depth to find the sweet spot but it was worth it.

05 October 2001, 15:09

ready_on_the_right

Eric I wondered about that too, but if anybody will make them shoot it is probably Saeed!

Mike

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Victory through superior firepower!

22 October 2001, 04:32

460wby

Back on top!

14 November 2001, 18:00

<MOA>

Any more data?? Anyone? I just loaded up somE Nosler ballistic tips with 90.0 grains of RL 22 and the same charge for the 210 Partition. Has anyone tried IMR 7828 with the 338 Ultra?

15 November 2001, 08:34

<Rust>

I've been working up lighter hunting loads for my .338. I've equipped it with a Vais muzzle brake and a Kepplinger set trigger as the recoil and the miserable factory trigger did nothing to enhance accuracy. The muzzle brake is a Vais which I highly recommend as the muzzle blast is little, if any greater than the plain barrel.

I have had exceptional luck using AA3100, a Nosler 200 gr BT & Winchester Magnum primers. 87 grains of powder is a mild load, and gives exceptional accuracy. 92 grains gives about 3180 fps and very good accuracy. This powder gives two accuracy nodes in this rifle. All powder weights tested gave at elast acceptable accuracy which was probably the biggest surprise.

15 November 2001, 17:18

rejpelly

I have received a .338 RUM Remington today; I went to the range using factory Ammunition 250 grsSwift-A- Frame ptd sp. The first five shoots had heavy recoil;painfull.I had to rest 10 minutes; the next ones ; I feel the kick acceptable; no need for me for a muzzle break, I can handle the kick. I put a slip on pad on the stock because the stock was not adequate for me. I use a tripod and the kick was 1.5 backwards, I was with an experienced shooter and the kick{1.5 inch backwards was almost the same}. I am not a heavyweight person...

16 November 2001, 02:12

POP

For the reduced loads inquiries.... Did a little searching in my reloading library and came up with this. For the 160 -180 gr bullets 20 gr of unique should be around what you guys are looking for as a starting point. I think it should reach about 1800 fps or so. I can use 24-28 gr of Unique in my 378 WBY with a 270 gr bullet for 1700-1850 fps respectively. Like a big bore 22 LR! Good luck

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"If she won't shoot MOA or better... out she goes!"

16 November 2001, 07:37

<10point>

Saeed Nosler is also makeing the 180 grn B-tip's for .338 .........10

18 November 2001, 17:36

rejpelly

With Sierra 250 grs sbt#2600 gameking; has anyone reloaded a load for this one yet...

19 November 2001, 02:17

<Dave King>

rejpelly

Here's some data I have for the 250 GameKing and RL-25.

BEWARE!!!

REDUCE THESE LOADS BY 1.5 GRAINS.

THE BELOW DATA WAS FROM AN OLDER LOT OF RL-25, MY NEWEST LOT OF RL-25 IS HOTTER THAN THE PREVIOUS AND I FOUND THAT I NEEDED TO REDUCE POWER LOADS BY 1.5 GRAINS.

Sierra 250 GameKing
Fed 215M
Remington Case
Neck sized once fired cases
Rem 700 action
27.5 inch Pac-Nor barrel
Leupold Vari-X III 3.5x10 M1 Long Range scope
100 yards.

89 grains of RE25, 2883 fps (cold bore shot)
90 grains of RE25, 2864 fps
91 grains of RE25, 2970 fps
92 grains of RE25, 2972 fps
93 grains of RE25, 3037 fps
94 grains of RE25, 3082 fps
95 grains of RE25, 3132 fps slight extractor mark
96 grains of RE25, 3159 fps extractor mark

All rounds fired and plotted onto one target, 4 into .493, 7 into .917 and one (as always) flier. Sweet spot seems to be 92 and 93 grains so I'll go for 92.5 at an estimated 3000 fps.

Here's some for the Sierra 300 MatchKing

More data today, RL-25 data but data none-the-less.

Temp 80
Humidity 100
Wind none
Rifle Tac-Ord 338 RUM
Barrel PacNor Polygonal 27.5 inch 1x8
Scope Leupold Vari-X III M1-LR (3.5 x 10 )
Chrony @ 8 ft
Target Distance 100 yards
Primer Fed 215M
Powder RL-25
Case Remington once fired and neck sized
bullet runout - minimal .001
OAL 3.650 (Same OAL for the Sierra 250s)
Bullet Sierra 300 HPBT

#1 80 grains RL25 2403 fps (Cold Bore)
#2 81 grains RL25 2416 fps
#3 82 grains RL25 2452 fps
#4 83 grains RL25 2491 fps
#5 84 grains RL25 2506 fps
#6 85 grains RL25 2548 fps (slight "extractor" mark)
#7 86 grains RL25 2627 fps
#8 87 grains RL25 2636 fps
#9 88 grains RL25 2673 fps
#10 89 grains RL25 2688 fps

I don't know why I have the "extractor" mark on the 85 grain load, I've examined the other loads and I see ever-so-slight extractor marks on the 87 grain load but nothing on the others (I use a 3x, 5x, and 8x jewelers loupe). There is some cratering around the firing pin on the cases but I believe that's due to the looser fit of the Speed-Lock firing pin I have.

I'm a bit perplexed by the powder requirement when compared to the 250 Sierras. I expected to get nowhere near the starting load of 89 grains of RL25 for the 250 when finishing off the big 300s. I believe I'll load several more cases for the 300 load test, I'll use 90, 91, 92 etc until I feel the need to pull the trigger from a distance with a string.

The 300s sit a fair distance into the case, the boattail is below the level of the shoulder at an OAL of 3.650.

Accuracy.... I nearly wet myself!!! I mentioned to you yesterday how I shoot onto one target and plot the hits in an attempt to limit my range trips for accuracy loads. Well, today I began plotting the hits (1.5 MOA low and .5 MOA right from my established 250 grain zero) and ALL rounds impacted essentially on top of one another, so much so that I couldn't distinquish one hit from another. Final group-- .863inches for all 10 rounds of 10 different powder weights. It's just a round raggity hole, I'm pretty pleased.
BTW, today I shot at my usual spot, a farmers field into a bank for a backstop. Shot from the bipod and sandsock, much more natural and comfortable.

I believe I'll be able to get 2700 without a problem but not much more as I'll be on a compressed load. Perhaps the RL22 is the better way to go for the 300, I could perhaps get another 4 grains of powder into the case if I'm thinking correctly.

I'd guess that the powder quandry is that the RL25 is better suited to the much heavier bullet in the larger .338 bore rifle, although RL22 could offer more usable powder it may cause some pressure curve problems. Maybe I should try the RL22 in the 250s.

Last little bit for the 300 Sierra MatchKing

3
posted 08-14-2001 08:47 PM
--------------------------------------------------------------------------------
Another load test tonight in the 338 RUM.
Temp 80
Humidity 80%

I tried 90 grains of RL25 over the Fed 215M primers and the big 300 grain Sierra MatchKing. (Load Density 100%)
OAL 3.650 (magazine limited)

Four rounds over the Crony:
2712 fps
2709 fps
2729 fps
2735 fps

Avg: 2721
ES: 26
SD: 12

No pressure signs on any case, first round was cold bore.

I tried the 300 Sierra MatchKing on a crop damage deer at 200 yards, pretty devastating.... it was a bang-flop proposition.

BTW, water capacity for once fired cases, 111.3 grains (water to top of case, primer in backward)

More load data for the 338 RUM is listed on LongRange Hunting

http://www.longrangehunting.com/cgi-bin/ultimatebb.cgi?ubb=get_topic&f=3&t=000067

[This message has been edited by Dave King (edited 11-18-2001).]

21 November 2001, 05:21

MADDOG

back on top.

22 November 2001, 08:50

MADDOG

Aug.2000 Issue of rifle shooter,Page 78 shows a 338 Rem Ultra load of 96 gr. of H4831. With a 250 gr. Swift at 3110 FPS. Is that possible guys. MD