Best powders for .270?

[MtPockets]

Hi All! I'm just getting started with reloading for my .270 and was wondering what kinds of powders generally work best in these guns? I'm currently working on 110 gr Vmax and 90 gr Sierra loads, but I'll be trying some 140-150 grain loads later on.
Also, I've noticed that some of the powder numbers are listed from multiple companies (like 4350 being made by IMR, Hodgons, and Accurate), are they more or less interchangeable?
I'm looking at the current situation with the lack of supplies at the stores and wondering which ones I should be stocking up on.
Thanks for the help!!!

 

[Lefty7mmstw]

Hi All! I'm just getting started with reloading for my .270 and was wondering what kinds of powders generally work best in these guns? I'm currently working on 110 gr Vmax and 90 gr Sierra loads, but I'll be trying some 140-150 grain loads later on.
Also, I've noticed that some of the powder numbers are listed from multiple companies (like 4350 being made by IMR, Hodgons, and Accurate), are they more or less interchangeable?
I'm looking at the current situation with the lack of supplies at the stores and wondering which ones I should be stocking up on.
Thanks for the help!!!

I can't help much on the varmint loads for your 270 but I'll say that imr 4831 and rl22 are two of your better choices for 130 grain bullets with rl17 and the 4350's doing very well also. If you step up to 150's I'd try i 7828 first.
As far as interchanging powders of the same number from different manufacturers, use data for the correct brand. Watch the brass brand and primer choice for the load also. It means less here than with shotgun loading but if you have only magnum primers and the load calls for standard you'll have to drop back a bit more on powder charge to start with; and if they want mag. primers and you only have standard you may not want to load that combo as the primers you have may not light it up sufficiently for good uniformity, especially in cold weather.

The 4831's are particularly bad for difference as imr 4831 is a lot faster than h4831 and you could damage your rifle subbing imr in for an h4831 load. The 4350's and 4895's are closer but they are sourced from different powder manufacturers so the data will vary.

As you progress in the hobby you will see the forest from the trees better but stay with known data to start with and don't try off the wall stuff. I've been loading for twenty years and loaded for 50 + rifles and there's still a pretty good pucker factor when pulling the trigger the first time on a load with little or no data like a new powder or mil-surplus stuff.

It's hard to stock up when the shelves are already bare, but you should settle on a load and get a year or two's supply of everything on hand. You'll ride out the bumps in the road better knowing you HAVE the stuff.

 

[savagelover]

Never use imr 4831 in place of the H 4831...an the same with any other powders..

 

[Edd]

If I was stocking up on powder for the 140-150 gr bullets, I'd buy H4831. I've never shot the light bullets so I would have to pick something from a reloading manual for them.

 

[stevenautique]

Gotta love the H4831sc for the 270. I always try the extreme powders first for their supposed temp stability.

Lately i have started to experiment with imr7828ssc as well. So far so good.

 

[MtPockets]

It's hard to stock up when the shelves are already bare, but you should settle on a load and get a year or two's supply of everything on hand. You'll ride out the bumps in the road better knowing you HAVE the stuff.

That's a big part of why I asked the question- I'm HOPING to stumble across some at some point and it'll be better knowing what to look for.
Thanks for all the help, guys!

 

[Lefty7mmstw]

That's a big part of why I asked the question- I'm HOPING to stumble across some at some point and it'll be better knowing what to look for.
Thanks for all the help, guys!

Edd is correct that if you wanted to run one powder in the 270 H4831 is it; with 7828 from imr there too.

This is the third run on ammo I've seen since I was shooting. The first was when Clinton started playing games. We all know about the second one and the current one. It will calm down, but with months in back-orders already it may take a while.

270 Cal .277 Dia 130 Grain  lead free poly tip | MidsouthShootersSupply.com

as far as bullets- that's a good buy on blems and I'd get some if I hadn't already picked up 700 150's and 1000 130 bonded's in the last year.

I believe it's the gmx, and if so run the load with either I or H 4831 and go shooting. I shoot I 4831 with my 130 gmx's.

 

[13red56]

I use imr4350 for the 90 to the 110 grain bullets and even the 115-120. I use H4831sc for the 130 which some what a standard in the 270. I have experimented with MagPro in the 135 and up bullets and had great success and am getting good velocities with the 140 Bergers using MagPro. That is what I have used hope this helps.

 

[ntg]

I've played with I and H 4831 and RL22 all in 140 gr bullets. The H4831 was the best. Every rifle has it's own "character", if you will. It's best to try a few combos and see what works best for yours. It helps if you have some reloaders around you as you'll usually be able to get some willing to give you a small amount of a powder to try it out. That's how I was able to try a few powders w/out having to buy a whole pound.

 

[nonnieselman]

I've played with I and H 4831 and RL22 all in 140 gr bullets. The H4831 was the best. Every rifle has it's own "character", if you will. It's best to try a few combos and see what works best for yours. It helps if you have some reloaders around you as you'll usually be able to get some willing to give you a small amount of a powder to try it out. That's how I was able to try a few powders w/out having to buy a whole pound.

I found that H4831 worked best in my .270 also, using 140Gr Bergers.
Shoots awesome out to 600yds.. or atleast it use to

 

[MtPockets]

Thanks for all the help!

One last question.

Well, ok- for now, anyway....

Are some powders more temperature stable than others? I shoot in temps from below zero to above 100, so that may be something to look at, too....

Thanks again for the help!!!

 

[Edd]

Hodgdon Extreme powders are supposed to be temperature stable. H4831 is one of them.

 

[Lefty7mmstw]

Hodgdon Extreme powders are supposed to be temperature stable. H4831 is one of them.

I put about as much stock in the temp. stability being better from Hodgdon thing as groundhog day. I've seen 100 fps swings from h 4895(another one of their temp. stable powders) so I've stopped even thinking they may be better.

 

[RT2506]

H-4831 and the 270 Win go together like ice cream and apple pie.

NO the 4350s are not all the same. Use the data for which ever one you will be using. IMR and AA are pretty close but H4350 is much different in my experience.