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

I had an old Winchester Model 70 with a 24" barrel that I used to shoot 54gr H4831sc and 150gr Partitions at 2790. That load was the most accurate load in any rifle I have ever owned, twice I shot 3 shot groups at 300 yards under .5, normally it would shoot under or right at an inch at 300. I could quite regularly shoot .5 groups at 100 yards with that load. I never hunted with that load as a primary, it was just a back up rifle on a couple of Elk hunts. I sold that rifle thinking that it was just too heavy for a .270win. I could have restocked it lighter (I am such an idiot).

When I was younger I nearly blew case heads looking for top velocity, now that I am older and I hope wiser, I want top accuracy but hope for decent velocity.

Mac,

My personal experience is that is of no difference than other rounds. You know my feelings on the whole fast barrel slow barrel deal and I feel that you'll find this with the 270 as well as others.

Exampel a bud of mines Ti .270 with a 22" tube ran under 2800 with a load that did 3K with my 23" tubed gun (and we both know that they 1" wasn't the big diff). It was with a 140 Accu for what that was worth.

As well, that rig with 57 of R22 would run a 150 Nozler day in and day out a skosh below 3K (close enough to call it 3K).

And, youi'll recall how my 308's have run against yours and others as well.

Call me tomorrow if you have time and we can cuss and discuss it then. I'll be on the road home dealing with the snow storm...grin

Dober

djb: Yes...since it has been years since I have loaded a 150 in the 270, I have not really looked at recent data,because I don't use the 150 anymore.The H4831 I refered to is the "old" stuff that O'Connor and those guys used,which I have always believed to be "slower" than present day 4831.

I agree with you that getting a bigger case is the way to get more velocity,but around 2900 fps is the "normal" velocity level for a 270 Winchester with a 150 gr bullet.That has been true for years now. Some barrels may take a grain or so more powder to get there,and this is not really unusual.

I'm curious as to what bullet weight you now use. I have been working with my new 270 FN Model 70 for the last few months as a backpack elk rifle. I fell in love with this rifle although I would have preferred a 30�06. I have settled on 54.5 grains H4381sc and the 150 Partition as my load. I have no idea as to the velocity, but 3 shot groups go from .75 to just over an inch consistently.

Thank you. I appreciate all the civil replies to my question.

djb: I have used only the 130 gr for years,simply because it works well and I see no reason to change.I think the type bullet construction you use is more important than 10-20 gr difference in bullet weight.So,rather than go to 150's,I use a tougher 130 and call it good.

Could be corporate lawyers desiring and advising clients to have a thick safety cushion when dealing with consumers.

In the mid 1970's I ran 58.0/H4831 with 150 partitions, 200 CCI primers in a 24" Sako L61.
Also 130 Speer Hotcor flat base with 60.0/H4831 both loads would put 5 shots in about 2 1/2" groups at 200 yards with a fixed 4x Leupy.

When we started getting what Hodgon labeled as "Newly Manufactured" H4831 my buddies and I ran the same loads and couldn't tell any difference. In regards to primers and cases, we would trim the .270 cases each time we reloaded, and the primer pockets were only beginning to flatten, like some factory loads. The cases were full as in a crushed fit, couldn't hear any powder from shaking.

With the 3 bullets that we tested with my dad's Remington 721 (24 inch barrel) here were our best loads. MV is average of 15 shots 15 feet from muzzle, accuracy is average of 5 3 shot groups.

1. 150g NP, 58g H4831, 2937 fps, 0.787 inches
2. 150g Woodleigh, 63g Magnum, 2886 fps, 0.656 inches
3. 150g TSX, 56g 7828, 3081 fps, 0.344 inches

Dad ultimately went with the Woodleigh, due to the size of the whole and penetration. Used it a while, but went back to the 150g NP last year with good performance on the Kentucky whitetail that he used it on.

Brad: No; I think it's pretty predictable.I've loaded for a lot of them and like any other cartridge,you are going to get variations mostly due to bore and groove diameters,throat/leade dimensions, etc. But there is nothing inherent about the cartridge that makes it more prone to these variations thany other of similar capacity.For example the Douglas barrels I have owned tend to be faster with the same loads than the Kriegers ,which in turn, behave a lot like M70 barrels.

There are a LOT of 270's out there; even though chambered the same,barrels vary in certain material ways.Also,some 270 shooters are willing to load hotter than others,which will effect velocity as well. I have found the cartridge very easy to load for and generally very accurate. This latest FN 270 is a perfect example; load development was done in one or two range sessions.I used 61-H4831-130 Sierra and 130 Nosler Partition.
I have not chronographed it yet,but would bet velocity is at or a bit under 3100.The Swift Aframe shot well also with 60.5,and I know the Swift is a bit faster with that charge.I have chronographed these loads in so many 270's I've lost count,so don't much worry about it.....and with those bullets, I don't need anything else

Tagged.

Old thread, but I will add. My boat paddle Ruger has never liked 150's, till I stuffed it with Magpro and a magnum primer. 58-60 grains in a WW case, Sierra BT, and a 215M or WLRM took it from 2 1/2" groups to sub MOA. Accurate list 59-61 as max depending on bullet, I stay one or two shy with the mag primers.

Brad I have had the best luck with either H4831SC or Magnum with 150's usually the NPT. I use Fed 210 with 4831 and Fed 215 primers with Magnum. The 150 is my favorite bullet in the 270. Velocities around 2850 shoot best out of my CLR with 24" barrel.

This is a nearly 5 year old thread and now it's given me an itch to own another 270... something I'll just have to resist!

Can't give my friend Dober that much satisfaction...

The 84L is still doing work on whitetails. Zero for two on DIY elk, but I'm sure it will keep trying.

We'd all have more satisfaction around here if you could convince Dober to get back on and post again. I miss his insights.

I sold my 270 Win. To a young fella who wanted to start hunting. He really liked my rifle, so I sold it to him.

Now, I feel the need to have another. This time, maybe a Kimber 84L.

Time well tell.

I had the Kimber MT 84L. Outdoor Ag (above) bought it from me. It accounted for 2 elk while I had it, and now has found new life mowing down whitetails

To me, the 270's the best of the 84L's.

I wish I hadn't sold it!

Brad, thanks for your thoughts.

I also think the 270 in the 84L is the way to go, if you wanted a lightweight rifle that is durable.

Brad,

There's always another rifle that's going to change a rifle loony's life.

So I've heard

I tinkered with a 270 early this fall. I didn't shoot anything with it -- I committed my deer season to a 338 Federal simply because I'd never used it in the past on game.

Back to the 270...I loaded everything from the 85 grain TSX's to 150 Partitions. I enjoyed messing with it again. I started hunting with a 270 in 1983 and used one exclusively for about 20 years. I got bored with it and moved on.

New bullets nudged me enough to get the urge back. I see me spending bunches of time in 2015 loading .277 bullets, but my goal is to do so in three different cases....

...and one of my goals is to develop a load in a fast twist 270 Win. with the 150 LRAB.