Home Forums Hunting & Shooting Ask The Gunwriters 270 Win / 150 Grain Load Information Wanted...

Please share 150 grain - 270 Win loads (only 150's please).

List Powder, powder charge (if you're comfortable doing so) bullet make, barrel length and speed.

Much appreciated!

This comment might result in some static, but more than likely, no one on this forum has access to secret loads for any cartridge, loads that are not published in one of the many loading manuals.

For loading data, I would go with the loading manuals, and not the internet. The manual publishers have pressure testing equipment and chronographs. Most people on this forum probably don't, concerning pressure testing equipment.

If you can't find the load in a manual, then it probably doesn't exist.

That's not what I asked...

Well I know you'd read this before but top loads using H4831 and the 150 grain Hornady,Speer and Noslers have always performed excellently for me. I used 57.5 grains mostly but have gone up a bit using Winchester cases in long throated rifles.

54 grains H4831SC, 150 Nosler BT, 24" Lilja, 2840 fps. This is a plinking load that I use after picking up a boat-load of .277 BT's a few years back. It is a mild load in my rifle that shoots well.

My wife and I have owned probably 10 .270's or so, and without exception among the most accurate loads was around 57.0 grains of H4831 or H4831sc and a 150, usually either a Hornady Spire Point or Nosler Partition. In fact one of the most accurate big game rifles I've ever owned was a Remington 700 ADL purchased in 1972, back when they had impressed checkering in a really shiny stock. But it would group 3 of the Hornadys into an inch--at 300 yards.

Muzzle velocity in various rifles has run from 2800 to 2950 or so, depending on barrel length and bullet.

Brad: Back in the bad old days I used to load 150 Partitions(screw machine) with the "old" O'Connor load of 58.5 H4831.Velocity was 2925-2950 or thereabouts.From one Goens custom with 22" Douglas barrel, it just broke 3000 fps.

I mighta been leaning on things just a hair with that one

I'll add my favorite 150gr. loads even though they aren't much different than what's been posted. I use two bullets mostly, 150gr. Nosler Partition when I'm hunting anything larger than deer. At other times I use the cheaper, and often more accurate 150gr. Sierra. I've been using 57grs. of H4831 for years. It's an odd .270 that will not be happy with that load combo.

Brad, the only 150 load I've ever put through the chronograph was 58-H4831SC-150PT. That one went 2781 in my 22" Pac-Nor. From the velocities listed above, I may need to look that one over again, maybe try some RL-22 if I ever find any of it again.

Brad
In my Remington Mtn rifle with 22 inch barrel, 58 grains of H 4831 gave me an average velocity of 2890 fps at an ambient temp of 90 degrees. Federal 215 primers, Hornady spire point.
57 grains of RL22 gave 2939 fps on the same day at 90 degrees, with the 215 primer and the Hornady Spire point.
Took a cow elk at 425 yards with that load, and bunches of deer with results that were totally satisfacory, at least to me.
I have data in my notes that 57 grains of H4831, 150 Interlock, 215 primers gave me 2700 fps in a different barrel.

Fred

Brad: 57.0gr. H-4831sc, 150 Hornady spirepoint flatbase or Barnes TSX 150, Fed. cases, Fed. 210 primers. Fps avg. is 2950 over the screens from 24" barrel. Rifle is a Sako Finnbear. Oh; the OAL is 3.275 with either bullet. Good luck. Rifletom

Not to be too redundant, but 57gr of H4831SC with a 150gr. Partition and a Fed 210M set up at 3.300" is just flat awesome. Short of big bear, you could empty the safe and not be lacking for much! That runs at 2885fps in my 24" Kimber. I have saved targets with MOA groups at 200 yards. 3.5-10x40 VXIII with Talley LW's to aid in pointing.

Guys please take this as an honest question and not criticism. I have consulted 4 different resources (Hogden, Nosler, Lee, and Hornady) and the MAX load I found listed for the 150g projectile and H-4831 was 55.7 grains. Aren�t you guys pushing the envelope a bit here? Are you all using more �traditional� loading data from the past which is stouter than today�s publications present? Even as such, have not powder burning rates changed�even lot to lot?

With no pressure testing equipment, my theory is to error on the side of caution in hand loading. I don�t go above book max, as an extra 100-200 fps does not make any difference in the real world. If I feel the need for speed; I go with a larger cartridge rather than hot-rod a smaller case. I look forward to your replies.

57 grs. of H-4831 and a 150 gr. speer. 2800 f.p.s.

I'm looking at my 6th ed. Hornady manual right now. The top charge shown with 150 grain bullets is 57.3 grains of H4831, and this includes use with the 150 gr. SST which eats powder capacity.

Of course it's not wrong to be careful, and top loads should be worked up with care.

Mac, two of my fav all time loads are 57 of R22 and with IMR 4350 I used to use 54 a heck of a lot.

As of late I've been running 7828 a bit with the 140's out of my new tube, when we get it up and running again I'll be trying 7828 with the 150's.

Dober

Thanks for all the responses gentlemen!

Seems like velocities, even with identical powder charges and barrel lengths are all over the map.

I've only had two 270's so my experience with the round is fairly limited compared to many here...

QUESTION: do you all think the 270 shows greater rifle to rifle variation than many other cartridges or is it right where other cartridges are in terms of velocity variation rifle to rifle?

Thanks

Most manuals list somewhere between 55-58 gr as max with H-4831 for somewhere between 2800-3000 fps. I seem to remember most manuals used to list 58-58.5 gr as max. I expect some of this is because 4831 changed, some of it is because bullets changed, and some of it is because the .270 is getting old. I have a Hodgdon pamphlet from the 90s that showed around 50k cup with 58 gr at close to 3000 fps and their website now shows 51k cup/ 55.7/2800. Not sure what changed. I do notice all of the loads listed were in the expected velocity range, so doesn't look too suspect to me. I'm always more suspect when I see higher than manual velocities listed justified by statements like ... I have no pressure signs and I can load my cases a bunch of times a primer pockets are tight.

Lou

I have been developing loads over a chronograph for quite a long time and done so with enough same cartridges but varying rifles/tubes to have an opinion though no experience with the 270, which I realize is what you have asked.
Anyways seeing the data posted throughout the thread surprises me none and is about what I would expect. I think it is mostly a matter of chamber and bore tolerances affecting pressure. Might add any differing barrel lengths can affect results as well.
I'll also add that contrary to conventional wisdom I more often than not find custom tubes shooting same loads slower than the factory tube they replaced. I chalk that up to smoothness and consistent tolerances making for a smooth pressure curve. FWIW.

I don't know this for a fact, but I think a lot of the data in the older manuals is from the surplus 4831 that Hodgdon used to sell.

I remember buying a 50 pound keg of it back in the 60s, and I still have about a pound of it left.

Not sure again, but I think this was before Hodgdon started making it (or having it made), and before Dupont brought it out as IMR4831.

I am also not sure how the burning rates of the three would compare, but I doubt they would be the same.

New data in the loading manuals might vary from a little bit to a lot from the data used with the surplus powder.

This is not an answer to the original question. I am just including it as something to keep in mind when comparing new and old data and new and old 4831.