My present load in 270 is 55gr IMR 4350 with 130 gr Sierra bt and Fed 210 P. Accuracy is excellent and this load has accounted for a pile of deer. I was going to stick to this load before I Chronod it at 2850f/s. Rifle is a 22" Win Featherwieght Mcmillan Stock.
I think that slow powder/22'bbl won't improve velocity.
Will going to a slower powder 4841/Re22 get me 3000f/s?
In my 338 and 300wby going from 4831 to 4350 acually increased velocity.
By the way,I consider this rifle/bullet to be the perfect combo for my territory in Alberta

Br

Okay, you have a load giving excellent accuracy and it's accounted for a pile of deer, so, you're going to change

If 55/4350/130 which is just about max, is only giving 2,850 FPS, you may just have a "slow" 270, which seems to happen a lot with 270's. I doubt you'll see much of an increase with R22 or H4831, but, part of the fun in reloading is trying new things.

I'd let it alone. The deer you have yet to kill won't notice.

R-WEST

[This message has been edited by R-WEST (edited 02-27-2002).]

55 Gr IMR4350 and a 130 Ballistic Tip or Sierra is my check load for every 270. If the rifle won't shoot that combination well it probably just won't shoot. For most of my 270's going to IMR or H 4831 gives modestly better velocity, especially with a 140 or 150 grain bullet, without giving up much in the accuracy department. RL 22 looks good on paper, but I have had poor accuracy results using the powder in the 270's I shoot.

My guess is an honest 3000 fps is going to be tough to achieve in a 22" barrel. But at the same time, its not really neccessary either.

I believe God shoots a 270 and occasionally a 338.

ForrestB -

quote:

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I believe God shoots a 270 and occasionally a 338

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Good one!!

R-WEST

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I believe God shoots a 270 and occasionally a 338

Couldn't have said it better, except that he drives a scout and jams with Waylon

BR

As far as the theological side of this discussion goes, I'm certain if Peter had lived in Montana when God said to him; "Rise Peter, kill and eat," he would have chosen a matching set of Winchester 70's chambered in 270 and 338 Win Mag. I'm also certain God tends to use more sophisticated weapons...

With 130's, my 22" bbl'd 270 goes 3,090 fps with H4831sc and 3,150 fps with RL22.

I can't speak to IMR4350, but most agree slower powders tend to do better in the 270 with all weights.

I never have moved past H4831 or RL22 as the speed is there, the accuracy is awesome and with H4831sc "extereme" you have temperature stability in all seasons... and that's more important thean 60 fps!

I think if God has any interest in the 270, He certainly inspired the creation of H4831sc for it.

Speaking of "go to" powders, H4350 "extreme" is mine in the 338 Win Mag. I've never been able to cram enough H4831sc into the case to make 225's go as fast.

Brad

Pick up a box of the plain old Winchester Super-X "power point" 130 grainers. They come in a silver box these days.

For you 270 shooters out there, these darn factory rounds will make you think you've forgotten how to reload. No kidding...

My standby load for the 270 is also 55 grains of IMR4350/130 grain Sierra Matchking. (For what it's worth, the Fed primers do tighten groups considerably with this recipe. I tried other primers, and found the Fed 210's to be the most consistent performers).

But the factory Winchester Super X 130's shoot just as well. Both shoot very consistent 1/2 MOA. No kidding... The Win stuff is only 10.78 a box at Walmart, too. I know two other people who have also been stunned by the accuracy of this factory round, so it isn't just my rifle.

Anyway, chrono the factory load, and see what you're getting from it. I pulled one apart and there is 59.3 grains of a ball type powder in there, so they are not underpowered.

As posted above, however, I simply wouldn't worry a whole lot about it. If the round is working, it's working. You may find a way to speed things up, but that won't guarantee better kills.

green 788

God made H4831 for Jack OConnor and Ray Atkinson for their 270's..I still have 50 lbs. of the old 4831 stuff and 62 grs. will sizzle out there at 3200 plus a tad (Jacks load)..the newer 4831's powders will hit about 3100 FPS..

Not a sugnificant difference over 2850 and I gotta better chance of bullet failure. I wouldn't bother changing. that pile of deer will keep getting bigger, never fear. Atkinsons Rule: If it ain't broke, don't fix it...

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Ray Atkinson

ray@atkinsonhunting.com
atkinsonhunting.com

Yes, if you switch to H4831, you can probably get up around 3000 fps in your gun, despite the 22" barrel. Sounds like it has a bit of a slow barrel, but that's just the luck of the draw, so to speak.

I would doubt improving anything with IMR 4831 because it rarely improves on the pressure/velocity ratio of 4350.

.270's can vary a lot. My Sako gets 3200 FPS with just 58.5 grains of that same surplus 4831 Ray is using, and would absolutely bust a gut if I crammed 62 grains into it. A friends post-64 Winchester uses 60 grains with no problem. So, just be sure to tailor your loads to your particular gun.

I used 55.5 grains of 4350 with the old-style 130 grain Nosler partitons in my two .270 Mann/Schoenauers with 20" barrels. In these rifles, (1/9" twist),average velocity was 3050, which was about all the short barrels would do with any 130 grain loads. The reason I selected that load is, it was the most accurate of those I tried, in .5 grain increments, stopping at 56.6 grains. If your load is accurate, I would continue to use it, the extra velocity is not worth giving up accuracy to get!!

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Larry

My 22" M70 clocks 3150 with Nosler 130's and Re22. I don't think I have ever tried 4350 in my rifle; I will have to give it a try and see what it does for accuracy.
C.G.B.

Speed isn't everything. My .270 is most accurate when speeds are between 2900 and 3000fps so all of my loads fall within that range. If your load is accurate and deer fall down on a regular basis, don't change it.
However, it doesn't hurt to try new bullet/powder combinations in the offseason. I use both H4831 and IMR4350 in various combinations with great results.

ZM

[This message has been edited by Zeke (edited 02-28-2002).]

Hey 4831 is what we use on my 270...that ole gal will crank out 3100fps with my Brother in laws handloads. It has done as well as most 7mm mags shooting a 140 weight.

Iv'e never seen a .270 that would easily go 3000fps in a 22" with a 130gr. My 20" does 2900 with Federal Premium's in 130gr. I can get over 3100fps with a 150gr in my 24". Try H-414 with the 130gr, but use a CCI-250 primer.

I have a 24" barrel on my current 270 Win sporter.
Mine is a little slow but it is accurate and the deer don't seem to notice the speed. 54.5 of IMR 4350 with 130 Speer GS gives me 3/4" groups at a chrony-ed 2910 fps. Then again - I don't care for "hot" loads.

I also tried H 4831 with the same bullet. Got up to 2970 fps but went to 1.5 " groups.
At 2900 fps it shoots 3/4" with 58.3 of H4831.

So I stayed with IMR 4350.

I tried one test with H4831 with the 150 Speer GS - did not chrony - best group of 1.1" at 57 grains. I'm pretty sure I can do better with a little work.

I hear the GS constuction has changed recently so based on what I have read on this site,and my experience with the Nosler Partition, I am going to try RL 22 with 150 Partitions when it warms up. If RL 22 doesn't work out it's back to H4831 and next on the list IMR 7828 (which works well in my 243 Win with a 100 Partiton)

I used the 210 Nosler Partition in my 338 last fall. Very impressed with the bullets performace. Starting out at 2850 fps - 300lB Muly at 300yds, Antelope at 230yds and 100lb Whitetail at 20 yds. The bullet just flat out performs.

I got a deal on "blemished" 150 Partitons from the Nosler Sportsman shop. I use these same "blemished" bullets in my 338 and 243 and I can't tell any difference in the way they shoot from the first quality bullets.

good luck

Thanks to all the members here, Its good to still see some die hard 270 users with experience to back it up.It really is a super caliber, one that a lot of experienced hunters used and that new ones shouldnt ignore.
I will definitely try H4831 as soon as I can, but its good to know I always have a good load to fall back on.Interesting that the 55gr 4350 is the load most still swear by.

BR

Battle River,

I've found IMR-4831 to be the powder of choice for my .270s. H-4831 and RL-22 are also both excellent. Depending on your gun and components, you'll probably find a good 130 gr. load between 56-59 gr of IMR-4831 or 58-62 gr of H-4831/RL-22 (note these are top end loads, so work up to this range, don't start with the lower number). I've not much experience with IMR-4350 in the .270, but I've used it a bit in my .280 with 140s and it didn't impress me velocity wise, though accuracy was good. I thought I had a slow .270 once...it just turned out the darn thing had a real long throat..just never noticed because at the time I seated to recommended OAL and the darn thing was accurate as heck. In any case, I think you should be able to safely get close to or over 3100 fps with 130 gr bullets if you're so inclined (never seen a .270 that wouldn't given at least 22" of barrel). On the other hand, the deer didn't seem to notice the difference between 130 factory loads poking along at 2900 fps or so or my handloads at 3100+.

As you probably already know...each gun is unto itself. It never ceases to amaze me how much of a velocity difference (+/- 300 fps) I see reported by guys using identical loads that I've tried in the same length barrels in the same calibers.

Good Luck,

Lou

In my Win. M70 stainless/walnut Featherweight I got 3005 fps avg. m.v. using 55.0 grs. IMR4350 w/ 130 NBT.(Max. load) I backed off to 54.0 grs. and get 2910 fps m.v. and much tighter groups and is my favorite load.