Need a load and bullet for a 6mm-250

[Gina1]

I sort of inherited an odd ball rifle/caliber. I've been banging on the internet, but have been unable to find a load for it. It's a 6mm-250, with a Hart barrel 1-12 twist. I figure I can make brass from 22-250 brass case with a 6mm mandrel, then run it through a 22-250 S die with the correct bushing.
Any load ideas ? Oh and BTW what seating die to use ??

Thanks for any help

 

[kolar55]

I sort of inherited an odd ball rifle/caliber. I've been banging on the internet, but have been unable to find a load for it. It's a 6mm-250, with a Hart barrel 1-12 twist. I figure I can make brass from 22-250 brass case with a 6mm mandrel, then run it through a 22-250 S die with the correct bushing.
Any load ideas ? Oh and BTW what seating die to use ??

Thanks for any help

http://www.hodgdonreloading.com/data/rifle
https://www.sinclairintl.com/reload...dies/rifle-dies/index.htm?k=6mm-250&ksubmit=y

 

[Big Mc]

I sort of inherited an odd ball rifle/caliber. I've been banging on the internet, but have been unable to find a load for it. It's a 6mm-250, with a Hart barrel 1-12 twist. I figure I can make brass from 22-250 brass case with a 6mm mandrel, then run it through a 22-250 S die with the correct bushing.
Any load ideas ? Oh and BTW what seating die to use ??

Thanks for any help

The Hodgdon site has that puppy..

 

[357Mag]

Gina1 -

Howdy !

What type of shooting are you planning to use your 6-250 for ?


With regards,
357Mag

 

[10at6]

I have several but 8 twists. For the light bullets Varget or Alliant MR 2000 work well.

The little Nosler 80 gr BT bullet is very accurate. as is the 75 gr VMax

 

[riflewoman]

There are a few different versions of the 6-250. There are two shoulder angles, the 26 degree shoulder of the original 250 and the 28 degree of the 22-250. Very difficult to tell them apart just by looking at them. RCBS makes dies for both versions. So what I would do.. is to shoot three rounds of 22-250 in this rifle and send these cases to RCBS and have them sell you dies to match.

As for loads, start with 6mm Creedmoor start load data, reduce an additional 5% of the listed max charge and work up in .3 grain increments. With a 1-12 twist keep the bullets under 100 grains and you should be fine.

Here is a link to the Sierra data for the 6 Creedmoor. https://sierrabulletsblog.com/2017/10/03/sierra-bullets-6mm6-5-creedmoor-load-data/

 

[Pawnee Bill]

The 6-250 is pretty much your basic .243 Winchester round. I would look at load data for the lighter bullets since you have a 1-12 twist barrel.

 

[Gina1]

Thank you... All. I now understand what I have and load for it

 

[Toby Bradshaw]

The 6-250 is pretty much your basic .243 Winchester round. I would look at load data for the lighter bullets since you have a 1-12 twist barrel.

A .243 Win case has about 20% more capacity that a 6-250 (based on the .250 Savage). Luckily, it will be hard for the OP to get into trouble using the advice above, since most .243 loads are going to end up spilled all over the reloading bench if anyone tries to get that much propellant into a 6-250.

 

[Fast14riot]

6-250 = 6mm international
6-22/250 is .003 longer at the datum also, may have hard chambering.

I'm considering a 6-250 myself and have been looking into the loads as well.

 

[bpd459]

Greetings,
I ran a 6mm/.22-250 for XC in an M-70 match rifle. Shot nothing but 107 SMK's over Varget. Shot wonderfully and was very easy to tune.
This cartridge is in no way a .243. Load data is much closer to the 6XC.
Good luck,
John

 

[Brians356]

6-250 = 6mm international

There's nothing new under the sun. Consider that the darling "new" 6mm Creedmore is essentially just one of P. O.'s favorites, the venerable 250 Ackley Improved (30-deg version), necked down to 6mm.
-

 

[Sniper338]

Greetings,
I ran a 6mm/.22-250 for XC in an M-70 match rifle. Shot nothing but 107 SMK's over Varget. Shot wonderfully and was very easy to tune.
This cartridge is in no way a .243. Load data is much closer to the 6XC.
Good luck,
John

truth.

 

[riflewoman]

There's nothing new under the sun. Consider that the darling "new" 6mm Creedmore is essentially just one of P. O.'s favorites, the venerable 250 Ackley Improved (30-deg version), necked down to 6mm.
-

There are differences in the 6mm International too. There are a lot of “Walker”versions which are smaller than the straight 6-250.

There really is not much new under the sun...

All of these mid-mcapacity 6mm cartridges are really the same. The Creedmoor, the XC, the CM, and even the old 6-250 all give similar velocities, Barrel life and accuracy. Any “advantages”claimed by the designer are in their perceptions. Twenty Years ago I chose the 6-250 as the easiest way to shoot a 6 for NRA HP. Tubb had his 6X but the concept of using a 243 reamer run in short was goofy to me. So I used a 6-250 body taper and all. Now, I’d just opt for the 6 Creedmoor and be done.

 

[Zero333]

80gr Berger FB Varmint bullet is what you're after if you want to shoot VERY small groups and use the same load for smoking vermin.

Hodgdon's site has 6mm-250 data. I say start with Varget and work up to around 35 gr.
Hodgdon's site lists 36.7gr of Varget as MAX with 80 bullet but it would be best if you did't try to work up to that much on the first outing. I'd start around 33gr Varget and go up to 35 gr in 0.3gr increments.

Quickload shows 6mm-International with 80gr Berger, 2.400"coal, 35gr Varget = 57,300 psi.

 

[Brians356]

There are differences in the 6mm International too. There are a lot of “Walker”versions which are smaller than the straight 6-250.

There really is not much new under the sun...

All of these mid-mcapacity 6mm cartridges are really the same. The Creedmoor, the XC, the CM, and even the old 6-250 all give similar velocities, Barrel life and accuracy. Any “advantages”claimed by the designer are in their perceptions. Twenty Years ago I chose the 6-250 as the easiest way to shoot a 6 for NRA HP. Tubb had his 6X but the concept of using a 243 reamer run in short was goofy to me. So I used a 6-250 body taper and all. Now, I’d just opt for the 6 Creedmoor and be done.

Something about wunderkind 22 Nosler looked familiar. It dawned - essentially a 90% scale Creedmore (with a rebated rim).
-

 

[Brians356]

There are a few different versions of the 6-250. There are two shoulder angles, the 26 degree shoulder of the original 250 and the 28 degree of the 22-250. Very difficult to tell them apart just by looking at them. RCBS makes dies for both versions. So what I would do.. is to shoot three rounds of 22-250 in this rifle and send these cases to RCBS and have them sell you dies to match.

As for loads, start with 6mm Creedmoor start load data, reduce an additional 5% of the listed max charge and work up in .3 grain increments. With a 1-12 twist keep the bullets under 100 grains and you should be fine.

Here is a link to the Sierra data for the 6 Creedmoor. https://sierrabulletsblog.com/2017/10/03/sierra-bullets-6mm6-5-creedmoor-load-data/

Since 6-250 is essentially a "de-improved" 6mm Creedmoor, my hunch is Reloder 15 will work well, better than Reloder 17. (FWIW Sierra's Paul Box found Reloder 15 ideal for 250 AI.)
-

 

[NCVarhtr]

80gr Berger FB Varmint bullet is what you're after if you want to shoot VERY small groups and use the same load for smoking vermin.

Hodgdon's site has 6mm-250 data. I say start with Varget and work up to around 35 gr.
Hodgdon's site lists 36.7gr of Varget as MAX with 80 bullet but it would be best if you did't try to work up to that much on the first outing. I'd start around 33gr Varget and go up to 35 gr in 0.3gr increments.

Quickload shows 6mm-International with 80gr Berger, 2.400"coal, 35gr Varget = 57,300 psi.

I agree with the above. The 80 GR FB is a solid bullet Very accurate and a great hunting bullet..