Home Forums Reloading Big Game Rifles Maximum velocity in 270 Winchester

I have Winchester, Hornady and Nosler(brass) and use a 59 grain charge of H4831sc with 140 Accubonds in 2 different rifles.

The Nosler stamped brass weighs a fair amount less than the Winchester.

Give or take velocities.

22" = 2950-80fps.

24" = 3020-3060fps.

50-70F.

According my Chrony the 22" barrel velocity will be roughly 100 fps less when it's below zero(from 70F).
(if I remember correctly)

The fusions are actually pulled bullets I'll reload.

Now that's a color of a different horse.

It's mo better too, IMO.

Rocky mountain reloading had them in 130s and 150 the last time I checked...great price even for plinking.

OP got his can of RL26. Took some doing, but now it's time to load those Nosler LRAB 150's

I'll check back in after the range.

Bonus! We'll be awaiting your report.

Rem41,

Any chance you've done some tests with RL26 by now?

Thanks, Nate

Loading now, starting at 59.0 grains it's a slightly compressed load. That LRAB is a long bullet.

Going 59.0 then 60.0 then 60.8 that's the Alliant book maximum w/ the 150 grain Partition


Will shoot some this friday.

41

Going to start with the Federal 210m. If the load needs tweeking will drop charge weights & work up using the magnum 215.

Way too stormy to shoot today, no way to shoot tight groups w/ sideways rain & wind tearing my targets off the backers.

Seattle is back!!

Nate I did, waited it out & got a perfect day to shoot, overcast 55' zero wind.

Reloder 26 is for real!


59.5 grains 3037fps
60.0 grains 3093fps

New Nosler brass
Federal 210m
Nosler 150 grain LRAB


My starting load gave me a nice tight 3 shot group & a velocity that Alliant said was @ the book maximum in their rifle.

My 25" Benchmark 5r tube is apparently a fast one, I can get by using 1.3 grains less.

Kicks like a mule, no excessive pressure signs even w/ the 60.8 grain load. Didn't get a chance to chrono that one, I'd estimate 3150fps(?)


41

Wow! So I still can see one problem with RL26...I've yet to see it on the shelf around here. I've been toying with getting some RL 26 or IMR7977 to play with the heavies in the 270. I see 7977 often.

I was able to cross 2900 with a 150 over 4000MR when playing with that powder. I also found RL17 will get them close to 2900. All of these are out of a 23.5" barrel.

41Rem -

That's impressive. It's been a long time since I even 'considered' another powder for my 270s. 7828 has served me well since it first became available to me.

I'll be looking for some 26 and hopefully test it come Spring.

Thank You for this thread and your testing.



Another reason to spend more $$$. <smirk>


Jerry

Powder Valley has 8# kegs ($140) of RL 26 in stock. 8# could be a misprint on their site as RL 23 and 25 are 5# kegs.

150 gr Partitions coast just past 3000 fps in my 24" Vanguard using MagPro.

Ted

Here's a thread showing the results I got from 7828ssc in my son's .270. Velocities were the highest I've ever seen from a .270 but the pressures were there too...

https://www.24hourcampfire.com/ubbth...R7828ssc_in_.270_Win_-_Holy_#Post9033233

John

Thanks or the link, interesting stuff.

As we're talking about high pressure loads...

Now 10 days after the fact & with a bruise still visible on my shooting shoulder, I'm thinking Alliant's maximum load of 60.8 grains of Reloder 26 with the Nosler 150 Partition might be a bit much, for me personally anyway.

Well, in all truthfulness I substituted the LRAB 150, but that bullet has a shorter bearing surface so it follows the pressure should be less all other things being equal.

That load gave no signs of over-pressure in my rifle, and did shoot 1 MOA. I hate to give up that speed as it flattens out my trajectory...


So after talking out of both sides of my mouth, guess I'll retest over the chrono for an actual FPS / SD and of course accuracy again.

If it checks out safely, guess I'll have to look into a Limbsaver recoil pad or a Benchmark muzzle break!


41😕

I've not measured the bearing surface area if the 150 LRAB yet, but I'd bet it will be less that the Partition, thus a little less pressure with a given load.

Just food for thought.............

MM

I got 2,877 with 58.0 H4831 SC in a 22" M70

I used Nosler's max load of magpro out of my 270 Win. with a 24" barrel shooting the 150g ABLR. The velocity averaged 2860 FPS and was very accurate. This was ~ 50 fps slower than Nosler indicated with their rifle.

My load with the highest velocity in 270 Winchester, in
a Vanguard S2 is with RL26 I used 61gr. with 140gr. Accubonds
Winchester cases and WLR primers. The average for 5 shots was
3124fps. Also group was under a inch. 59.6gr of Norma MRP
Gave 3081fps. with same bullet. 58.2gr of MRP gave 3006fps
with 150gr Nosler Ballistic Tips. I,ll Try the RL26 with
the 150gr Nosler Partitions next. They shoot very accurately
in my Vanguard.