.270 Winchester and 2000-MR

M3mh0g · April 24, 2013, 07:43 AM

I've been reloading for about a year now and have successfully reloaded 5 different pistol calibers without issue. I decided to go to rifles now and am starting with .270 Winchester. Went to my LGS yesterday to get all I need. I had my mind set on H-4350 or H-4381 powders. I let the owner (who has given me a lot of good advice in the last year) talk me in to Alliant 2000-MR instead. I purchased some 130 gr. Winchester SP and 140 gr. Nosler BT.

I have found a load to try with the 130 but nary a one with 140. Anyone have any suggestions or experience with this powder?

I'm nervous about testing a off book load with no guidelines, I'm still pretty new at this.

M3M

hooligan1 · April 24, 2013, 08:31 AM

Well sir you started out on the right foot, looking for .270 win load featuring H4350. The fella might know what hes talking about, but for almost everything in .270 win, I have switched from IMR 4350 to H4350, because of precision and repeatability....I have never tried the 2000MR. I have in fact three loads formy .270 featuring the H4350, with 130 grain B-tips from Nosler, 130 grain Accubonds from Nosler, and 130 TTSX's from Barnes, and these loads shoot almost Identical at 100 yds... Some like RL 22, RL 19, IMR 4350, for the .270, and I'm sure I left out some real good powders as well.
You can test and find out, don't leave us hanging, update regularly!

Also anytime I test any bullet I go to the bulletmaker's manual and see first what they prescribe.... Then to the powder company's data...

M3mh0g · April 24, 2013, 10:13 AM

Please let me know of my logic is flawed.
If a load of powder A in the book is 50 gr. for a 130 gr. bullet
Would a 5-10 % reduction from the starting load be safe in a 140 gr. bullet
Not looking to corner anyone if you don't feel comfortable answering I get that.

Brian Pfleuger · April 24, 2013, 12:13 PM

CAUTION: The following post includes loading data beyond or not covered by currently published maximums for this cartridge. USE AT YOUR OWN RISK. Neither the writer, The Firing Line, nor the staff of TFL assume any liability for any damage or injury resulting from use of this information.

I'd use a linear difference in the other data.

They have 100gr at 53.0gr and 130gr at 46.5gr. That's a reduction of 6.5grs powder over 30grs of bullet, or 2.2grs powder per 10grs of bullet.

The 140gr bullet would be 44.3gr max load, starting load of 40.0gr.

That's what I'd do. I'd prefer more than two data points, but that's where I'd start.

M3mh0g · April 24, 2013, 01:45 PM

Thank you very much Brian. Not sure I'm ready to go off book at all, but if I do it'll be with as much info as I can get. Your logic makes sense to me. I'll keep scouring for more data points.

Brian Pfleuger · April 24, 2013, 02:03 PM

You should email Alliant. They will provide whatever data they have, for free.

jimbob86 · April 24, 2013, 02:05 PM

What's your barrel length?

I've loaded for several different .270 WINs, and some powders seemed to work better in 24" and not as well in .22" barrels ....

I have no experience with the MR2000 ...

I like IMR7828 for 150gr hunting loads ....though H4831 worked well, too.

IMR 4064 worked well for reduced recoil 130gr loads for the kids, and for 90-110 prairie dog loads.....

All the ball powders I have tried in the .270 WIN worked better in cold weather with magnum primers.

M3mh0g · April 24, 2013, 02:21 PM

Gun is a browning a-bolt with a 24" barrel. You think they have more information they are not publishing on their website? I guess the only way to find out is to ask.

jimbob86 · April 24, 2013, 03:08 PM

If you get ahold of them, ask them if there is someplace that shows disassembly of the bolt ...I can't find that anywhere.....

BumbleBug · April 24, 2013, 03:42 PM

Quote:

Originally Posted by M3mh0g

Please let me know of my logic is flawed.
If a load of powder A in the book is 50 gr. for a 130 gr. bullet
Would a 5-10 % reduction from the starting load be safe in a 140 gr. bullet
Not looking to corner anyone if you don't feel comfortable answering I get that.

You're looking at it the wrong way. Look at powder "A" load data for 150 gr bullets & reduce by your percentage. Because you're using slow powder, do not load less than the recommended minimum for the 150gr. The 130gr & 150gr bullets are standards for the .270 & the 140gr is a rather new weight.

BTW: Back when there weren't so many good powders around, H4831 was considered "THE" powder for the .270.

Keep us posted...

...bug

Jimro · April 24, 2013, 07:28 PM

I've loaded 8 lbs of 2000-MR into 223 Rem cases over the last year. It does very well with heavy for caliber bullets (75 and 80 gr) in that caliber as well as 308.

However, the burn rate is very similar to Reloader 15, so it is a tad fast for the 270 Win. The case capacity to bore ratio for the 223 and 308 are 766.3 and 751.6 respectively. The case capacity to bore ratio for 270 Win is 1095.1 which is some argue is the beginning of "overbore" and requiring slow powders for good case fill.

However, people have been using powders with burn rates similar to 2000-MR with the 270 for decades, including IMR 4064 and 4895 (IMR and H versions) as well as Varget. So you can do it, expect velocity to be in the range of 2775 to 2825 for MAX charge with a 140gr bullet, you can expect to need magnum primers to set off the ball powder with low case fill.

Jimro

M3mh0g · April 24, 2013, 07:30 PM

Bumble. That's the problem. The only data I can find is for 130 gr and 100 gr. I agree if I had 150 gr data I would reduce it to the minimum and start there.

Jimbob I'm confused on your comment about the bolt disassembly. Is that your way of saying anything I try would blow up the bolt? If so you probably should just say that and get your point across.

I did email Alliant to see of I could get anymore data out of them. Ill keep you posted.

TROOPER2 · April 24, 2013, 09:12 PM

In my 270 I shoot 57grs. IMR4831 130 gr Ballistic tip BT Nosler very accurate and so far i never had a deer or hog to walk form it.

jimbob86 · May 3, 2013, 10:34 PM

Quote:

Jimbob I'm confused on your comment about the bolt disassembly. Is that your way of saying anything I try would blow up the bolt? If so you probably should just say that and get your point across.

Not at all.

You mentioned you were going to contact them, and that you had an A-Bolt.

I have searched their website, and much of the internet, and have not found instructions on disassembly of the bolt for that gun.

April 24, 2013, 07:43 AM	#1
M3mh0g Member Join Date: January 31, 2012 Posts: 22	.270 Winchester and 2000-MR I've been reloading for about a year now and have successfully reloaded 5 different pistol calibers without issue. I decided to go to rifles now and am starting with .270 Winchester. Went to my LGS yesterday to get all I need. I had my mind set on H-4350 or H-4381 powders. I let the owner (who has given me a lot of good advice in the last year) talk me in to Alliant 2000-MR instead. I purchased some 130 gr. Winchester SP and 140 gr. Nosler BT. I have found a load to try with the 130 but nary a one with 140. Anyone have any suggestions or experience with this powder? I'm nervous about testing a off book load with no guidelines, I'm still pretty new at this. M3M

April 24, 2013, 08:31 AM	#2
hooligan1 Senior Member Join Date: July 18, 2010 Location: Independence Missouri Posts: 4,587	Well sir you started out on the right foot, looking for .270 win load featuring H4350. The fella might know what hes talking about, but for almost everything in .270 win, I have switched from IMR 4350 to H4350, because of precision and repeatability....I have never tried the 2000MR. I have in fact three loads formy .270 featuring the H4350, with 130 grain B-tips from Nosler, 130 grain Accubonds from Nosler, and 130 TTSX's from Barnes, and these loads shoot almost Identical at 100 yds... Some like RL 22, RL 19, IMR 4350, for the .270, and I'm sure I left out some real good powders as well. You can test and find out, don't leave us hanging, update regularly! Also anytime I test any bullet I go to the bulletmaker's manual and see first what they prescribe.... Then to the powder company's data... __________________ Keep your Axe sharp and your powder dry.

April 24, 2013, 10:13 AM	#3
M3mh0g Member Join Date: January 31, 2012 Posts: 22	.270 Winchester and 2000-MR Please let me know of my logic is flawed. If a load of powder A in the book is 50 gr. for a 130 gr. bullet Would a 5-10 % reduction from the starting load be safe in a 140 gr. bullet Not looking to corner anyone if you don't feel comfortable answering I get that.

April 24, 2013, 12:13 PM	#4
Brian Pfleuger Moderator Emeritus Join Date: June 25, 2008 Location: Austin, CO Posts: 19,578	CAUTION: The following post includes loading data beyond or not covered by currently published maximums for this cartridge. USE AT YOUR OWN RISK. Neither the writer, The Firing Line, nor the staff of TFL assume any liability for any damage or injury resulting from use of this information. I'd use a linear difference in the other data. They have 100gr at 53.0gr and 130gr at 46.5gr. That's a reduction of 6.5grs powder over 30grs of bullet, or 2.2grs powder per 10grs of bullet. The 140gr bullet would be 44.3gr max load, starting load of 40.0gr. That's what I'd do. I'd prefer more than two data points, but that's where I'd start. __________________ Nobody plans to screw up their lives... ...they just don't plan not to. -Andy Stanley

April 24, 2013, 01:45 PM	#5
M3mh0g Member Join Date: January 31, 2012 Posts: 22	.270 Winchester and 2000-MR Thank you very much Brian. Not sure I'm ready to go off book at all, but if I do it'll be with as much info as I can get. Your logic makes sense to me. I'll keep scouring for more data points.

April 24, 2013, 02:03 PM	#6
Brian Pfleuger Moderator Emeritus Join Date: June 25, 2008 Location: Austin, CO Posts: 19,578	You should email Alliant. They will provide whatever data they have, for free. __________________ Nobody plans to screw up their lives... ...they just don't plan not to. -Andy Stanley

April 24, 2013, 02:05 PM	#7
jimbob86 Junior member Join Date: October 4, 2007 Location: All the way to NEBRASKA Posts: 8,722	What's your barrel length? I've loaded for several different .270 WINs, and some powders seemed to work better in 24" and not as well in .22" barrels .... I have no experience with the MR2000 ... I like IMR7828 for 150gr hunting loads ....though H4831 worked well, too. IMR 4064 worked well for reduced recoil 130gr loads for the kids, and for 90-110 prairie dog loads..... All the ball powders I have tried in the .270 WIN worked better in cold weather with magnum primers.

April 24, 2013, 02:21 PM	#8
M3mh0g Member Join Date: January 31, 2012 Posts: 22	.270 Winchester and 2000-MR Gun is a browning a-bolt with a 24" barrel. You think they have more information they are not publishing on their website? I guess the only way to find out is to ask.

April 24, 2013, 03:08 PM	#9
jimbob86 Junior member Join Date: October 4, 2007 Location: All the way to NEBRASKA Posts: 8,722	If you get ahold of them, ask them if there is someplace that shows disassembly of the bolt ...I can't find that anywhere.....

April 24, 2013, 07:28 PM	#11
Jimro Senior Member Join Date: October 18, 2006 Posts: 7,097	I've loaded 8 lbs of 2000-MR into 223 Rem cases over the last year. It does very well with heavy for caliber bullets (75 and 80 gr) in that caliber as well as 308. However, the burn rate is very similar to Reloader 15, so it is a tad fast for the 270 Win. The case capacity to bore ratio for the 223 and 308 are 766.3 and 751.6 respectively. The case capacity to bore ratio for 270 Win is 1095.1 which is some argue is the beginning of "overbore" and requiring slow powders for good case fill. However, people have been using powders with burn rates similar to 2000-MR with the 270 for decades, including IMR 4064 and 4895 (IMR and H versions) as well as Varget. So you can do it, expect velocity to be in the range of 2775 to 2825 for MAX charge with a 140gr bullet, you can expect to need magnum primers to set off the ball powder with low case fill. Jimro __________________ Machine guns are awesome until you have to carry one.

April 24, 2013, 07:30 PM	#12
M3mh0g Member Join Date: January 31, 2012 Posts: 22	.270 Winchester and 2000-MR Bumble. That's the problem. The only data I can find is for 130 gr and 100 gr. I agree if I had 150 gr data I would reduce it to the minimum and start there. Jimbob I'm confused on your comment about the bolt disassembly. Is that your way of saying anything I try would blow up the bolt? If so you probably should just say that and get your point across. I did email Alliant to see of I could get anymore data out of them. Ill keep you posted.

April 24, 2013, 09:12 PM	#13
TROOPER2 Junior Member Join Date: January 14, 2013 Posts: 13	270 Win In my 270 I shoot 57grs. IMR4831 130 gr Ballistic tip BT Nosler very accurate and so far i never had a deer or hog to walk form it.