Home Forums Hunting & Shooting Hunting Rifles .270 Win & Reloader 22

Nosler's manual lists 55 gr of H4831 as max and Speer's #14 list as 57.5 as max....hmmmmm.

Kitch I don't know what to say...I shoot 60-61 gr with 130 gr bullets.

I must be a dangerous and reckless nut.

Hodgdon says 60

In a Jack O'Connor article, he wrote than one could not put enough H-4831 in a .270 Win case to make it dangerous.

Remember Jack was using old surplus H-4831. I think the stuff today is a bit hotter.

I've heard that, but I don't believe it. If it were not the same powder, it would be called something else, for it would not be H-4831.

My Norma manual list 56.7 as max for the 150 grain partition with MRP and MRP is almost identical to R22 and their max loads are usually right up there. Ive used a lot of data off Real Guns with no problems at all but that one is definitely a start low and work up load.

SS: This may vary rifle to rifle but you will get about the same velocity with 61 gr of the present H4831 as we used to with 62 gr of the WW II stuff. IME going to 62 gr does you no good as velocity "flattens" with any more than 61 gr. (I've tried it).

If you want to see what the old stuff was like, try 7828. It seems pretty similar IME.

Hi TwoTrax & BobinNH,

You guys might be right which means I might be what's left.

Making gunpowder is chemistry. As long as formulae are followed, the outcomes ought to be identical. Mix two parts hydrogen with one part oxygen and you'll be drinking water.

I have more rifle powder now than I'll use in ten seasons. But were I to try new stuff I'd try IMR 4831 & IMR 7828.

The .280 Rem is my favorite cartridge. I was too damned smart when I got in to the rifle buying business. Had I had the wisdom I'm still chasing I'd of bought a .280 Rem and would have never needed another big game rifle. Now I'm sans a .280 Rem, but not the wisdom to know of its prowess. There is magic in .284 caliber bullets, that fella on the Dark Continent culled close to a 1,000 elephants witha 7x57. The segue is this load data. A 160 grain .280 Rem bullet at 2900+ FPS out of what I consider the ideal barrel length of 22" using IMR 7828 powder, and one would be very hard pressed to find a better North American big game rifle.

I will concede that for practical purposes, there ain't spittin' difference between the .270 Win & .280 Rem as long as the 175 grain .280 Rem bullet is left off the comparing scale. The 175 grain .284 bullet is legendary for interstate travel and giant Sequoia tree penetratin', and I didn't get that info from Paul Bunyan. 'sides, Bunyan was a .45/70 Gov't man.

BTW, Bobin, my primary objective when assembling loading components is accuracy. A faster traveling bullet is useless if it travels very fast & right on by what I want to eat.

I have very old load data (circa 1951) that belonged to my dad. For instance, I use 67 grains of H-4831 with 160 grain Partitions out of my Sako 7MM Rem Mag. I've chrono'd this load at better than 3100 FPS. Depending upon dated load sources I have this load is either 3 grains under maximum or a grain over. Current data sources indicate that I've should have gone to heaven for firing it. Fact is, this load is completely safe in my rifle. It has never shown any sign of pressure. And when I began working it up I knew that I could increase powder weight, but when my rifle shoots MOA or less, I figure that my load development is done.

In one load manual circa 1951, .270 Win data would be considered by today's standards as moon mission launching formula. It'd scorch 60 grains of H-4831 & 130 grain .270 Win bullets. But here's the conundrum: if loads were safe some 60+ years ago, why are they not now considering we have access to better manufacturing?

My interest in R-22 was piqued due to reported accuracy, that and the fact that I managed to pick up three pounds to add to the close to a pound I had. If, as indicated by Real Guns, a reputable source, I can get MOA with 59 grains of R-22 and a 150 Partition, a classic hunting bullet as opposed to target bullet, I think I'd be wise to start measuring incremental loads to see if I can SAFELY replicate the Real Guns load.

Here's another thing I don't want to learn the hard way: I can't kill anything with a rifle that's in bits & pieces. If I develop a SAFE 150 grain Partition load for my .270 Win and I manage to put one of those SAFE Partition loads where it will interrupt an elk's ability to pump oxygenated blood to its brain, my guide and I will have a whole lot of work to do.

SS: Good posts and interesting to read. I agree on the 280.


Have not had one in awhile but RL22 is first stop shopping for me as years back it gave the nicest combination of velocity and accuracy in my first 280 Rem.I used 140 gr bullets from it, both Partitions and Bitterroots.

The cartridge is a winner.

After having had quite a few 280's, with bullets up to & including 140 gr, RL-19 is usually a slightly better performer than RL-22.

RL-22 shines with bullets of 150 gr & up.

MM

MM: Never tried 19.

MM - I like RL-19 in the 280 with 140's also. Really seems to hit the "sweet spot" of top velocity and accuracy.

And, as with RL-22, it's not unusual for top loads (weight wise) to exceed some published sources w/o issue.

MM

57 gr RL-22 lit with a CCI-250 primer in WW cases will push the 150 gr Partitions to a very accurate 2925 fps in my old pre-64 270 WCF, 'pure hate' on WT deer and pigs.

I'm shooting 59g of H4831sc with a 150g NBT for around 2925fps in a 24" bbl. Rifle is a bit long throated though.

My best load with the 150 NP. Was 56.5 grains of RL22 for 2850 fps in a Remington 700KS

I've had good luck with R22 in several different cartridges - everything from the .25-06 to the .300 Roy. I might not take it hunting in below zero weather, but it's been fine otherwise.

I am going to load 150 grain .270 Win Partitions starting at median load and working up to 59 grains. I will stop where accuracy is best provided velocity is acceptable. If I can't get decent results, I know that 58 grains of H-4831 will work.

Other hunters have gotten excellent results using IMR-4350, which I have. I might try a few to see what happens.

A hundred FPS one way or the other ain't gonna matter. That a bullet will go where's it's supposed to go does matter.