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efw Offline OP
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I have just scored a sweet new rifle from the classifieds here on the 'fire and wondering if anybody has ever loaded for this cartridge.

I found a fair little bit of info on the web by searching its various names (6mm-250, 6mm International) but they mostly utilized powders I don't have. I'd be grateful for loads ya'll have to offer, but specifically looking for stuff using RL-15, -19, and IMR-4350 if y'all have experience w/ such powders.

Thanks a lot,

efw

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Call mine a 6XC........


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I dont load for it but,Sierra and Hodgdon both have loads for it.Neighter have loads with R15 or R19, hodgdon has loads for H4350 for 80gr and up.


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For RL-15, start with reduced Varget data and work up. For IMR 4350, use reduced H4350 data and work up. H4350 and Varget data is on the Hodgdon website mentioned previously.

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I have a 6mm Int in a Rem 40XB that carries a Rem 24X target scope; nice shooting rig. But, the twist is 14 in., I've never even tried to shoot anything heavier than 80 gr. and lighter with 4064 and Varget. The 6mm-250 isn't the same cartridge; the Int. has the shoulder set back about .1" from the .250 location.

The biggest problem you gonna have is forming cases for the (Walker) International. I made my own "forming die set" by modifying four other sizing dies because the form dies from RCBS were far too rich for my wallet.

Tell us your chamber is 6 Int or 6-250, and twist rate and I'll try to provide some data. But I can tell you now, 4350 is too slow if you have a 14 twist.

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Duplicate

Last edited by boomtube; 03/10/10.
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efw Offline OP
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BT,

Thanks. I haven't actually got a hold of the rifle yet. I'll provide the info you request as soon as I do.

Thanks all,

efw

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efw, when you know what you have send me a PM, I may not check back here very often. Boom

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efw Offline OP
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Looks like it likely has a 10" twist...

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I meant to pick up some 90 gr NBTs yesterday and grabbed E-Tips of the same weight by mistake. I also picked up Hornady 75 gr HPs, and intend to get either some 87 gr HPs, 90 gr NBTs, or 100 gr Interlocks.

Anybody worked with these in this cartridge yet?

I did find quite a bit of load info in the Sierra manual that shows IMR-4895 and H-380 as star performers. Seems like RL-15 would be great with the mid-weight bullets, but an email to Alliant got me nothin'. Similarly, I'm thinking TAC would be a great one, maybe Big Game too?

Any assistance y'all could offer would be greatly appreciated!


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efw Offline OP
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Anybody use IMR-4320 with the smaller bullets in this cartridge? I have some lying around with nothing to do wink ...

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I use IMR 4895 with either 70 Gr. or 75 Gr. Ballistic tips or VMAX'S - can't remember.

I'll check my load data and let you know later tonight, hopefully.



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Here are several loads for the 6x250 Savage from LoadData.com.
There are several hundred more for the 6mm Intl. there as well.
Great website, well worth the subscription cost.

Warning! Notes: 26-inch barrel - 1-in-12-inch twist. Three-shot groups at 100 yards unless otherwise noted. CAUTION! These loads were safe in the author's rifle but must be backed off 20 percent and worked up again in any other rifle. (Handloader Issue 144)
Be Alert: Publisher cannot be responsible for errors in published load data.

Wt. Bullet Powder Manufacturer Powder Charge Velocity (FPS)
70 Sierra Match Hodgdon H-322 35.0 3,320
Remarks: group (100 yds): 1/2 inch

70 Sierra Match Hodgdon H-322 36.0 3,481
Remarks: group (100 yds): 3/8 inch; maximum pressure

70 Sierra Match Winchester W-748 37.0 3,327
Remarks: group (100 yds): 1/2 inch; mild load

70 Sierra Match IMR IMR-4895 37.0 3,421
Remarks: group (100 yds): 3/4 inch; five-shot group

70 Sierra Match IMR IMR-4895 38.0 3,574
Remarks: group (100 yds): 3/8 inch; maximum pressure

70 Sierra Match Hodgdon H-380 40.0 3,235
Remarks: group (100 yds): 3/4 inch; five-shot group

70 Nosler Match IMR IMR-4895 37.0 3,501
Remarks: group (100 yds): 5/8 inch; maximum pressure

70 Nosler Match IMR IMR-4320 38.0 3,426
Remarks: group (100 yds): 1/4 inch

70 Hornady SX IMR IMR-3031 35.0 3,321
Remarks: group (100 yds): 1/2 inch

70 Hornady SX IMR IMR-3031 37.0 3,478
Remarks: group (200 yds): 11/16 inch

70 Hornady SX Winchester W-748 37.0 3,258
Remarks: group (100 yds): 7/16 inch

70 Hornady SX IMR IMR-4895 37.0 3,357
Remarks: group (200 yds): 3/4 inch

75 Hornady HP IMR IMR-3031 37.0 3,469
Remarks: group (100 yds): 11/16 inch

75 Hornady HP IMR IMR-4320 39.0 3,453
Remarks: group (100 yds): 13/16 inch

75 Hornady HP Winchester W-760 41.0 3,299
Remarks: group (100 yds): 7/8 inch

75 Hornady HP Hodgdon H-414 41.0 3,296
Remarks: group (100 yds): 3/4 inch

80 Speer SP IMR IMR-4895 36.0 3,229
Remarks: group (200 yds): 1 3/16 inches

80 Speer SP Hodgdon H-322 34.0 3,229
Remarks: group (200 yds): 1 15/16 inches

85 Sierra HPBT Alliant RL-7 32.0 3,139
Remarks: group (100 yds): 1 inch

85 Sierra HPBT IMR IMR-3031 33.0 2,970
Remarks: group (200 yds): 15/16 inch

85 Sierra HPBT IMR IMR-3031 35.0 3,230
Remarks: group (200 yds): 1 11/16 inches

85 Sierra HPBT Hodgdon H-322 34.0 3,170
Remarks: group (200 yds): 7/8 inch

85 Sierra SP IMR IMR-3031 34.0 3,112
Remarks: group (200 yds): 5/8 inch

85 Sierra SP Hodgdon H-322 34.0 3,120
Remarks: group (200 yds): 1 5/8 inches

87 Hornady HPBT IMR IMR-3031 35.0 3,163
Remarks: group (200 yds): 1 inch

87 Hornady HPBT IMR IMR-4320 35.0 3,110
Remarks: group (100 yds): 1 inch

87 Hornady HPBT Hodgdon H-414 38.0 3,056
Remarks: group (100 yds): 3/8 inch

88 Lyman 245496 Alliant Unique 8.0 1,606
Remarks: group (50 yds): 7/16 inch

90 Sierra FMJBT IMR IMR-3031 34.0 3,061
Remarks: group (100 yds): 1/2 inch; five-shot group

90 Sierra FMJBT Hodgdon H-322 34.0 3,013
Remarks: group (100 yds): 9/16 inch

95 Nosler Partition IMR IMR-4320 36.0 3,119
Remarks: group (200 yds): 1 3/8 inches

95 Nosler Partition IMR IMR-4320 36.5 3,205
Remarks: group (100 yds): 3/4 inch; maximum pressure

100 Hornady RN IMR IMR-4320 36.0 3,055
Remarks: group (100 yds): 7/16 inch; maximum pressure

100 Hornady RN Winchester W-760 40.0 3,073
Remarks: group (100 yds): 3/8 inch

100 Sierra SP IMR IMR-4320 34.0 2,947
Remarks: group (100 yds): 7/8 inch

100 Sierra SP IMR IMR-4320 35.0 3,014
Remarks: group (100 yds): 7/16 inch; maximum pressure


(c) 2004 Loaddata.com


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efw Offline OP
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Thank you VERY much; this is most helpful!

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A "6mm int'l" may not be a 6mm-250 Savage! Caution is suggested until your certain what the chamber is.

For instance I have shot a 6mm Remington International since 1966 and the shoulder is pushed back quite far on the 250 Savage case. The load above using IMR 3031 would be an overload for the 70 gr bullet in my rifle.

http://www.reloadbench.com/cartridges/w6mm250.html

[Linked Image]


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The loads above from LoadData are specifically for the 6mm x250 Savage.
Like most wildcats, chambers can vary considerably and therefore the admonition in the text above to start 20% lower and work up.


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efw Offline OP
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Mine is a 6mm-250 which was named 6mm Int'l. Based upon the limited research I've done, I think (but am not certain) that the cartridge that Savage 99 is referring to is the "Walker" version of the cartridge. It is a 6mm-250 with the shoulder sharpened to 30 degrees and bumped back a hair to create a longer neck, thereby also decreasing case capacity.

Mine is a 6-250, so your numbers are a reliable guideline for me.

Thanks again guys,

efw

PS- I see, after actually inspecting what Savage 99 put up there, that his "Remington Int'l" has a 26 degree shoulder... there are many, many iterations of this one...

Last edited by efw; 03/31/10. Reason: oops
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Mine is a 6mm-22/250. Is that the same as a 6mm-250?

Neck on mine is standard 22/250 necked up to 6mm and doesn't look like the diagram above.



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Yes it is the same as the 6mm-250 but is different than the 6mm Intl.


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