Reloading Powders for 270 Winchester

[greatwhite]

So it seems that H4895 is not going to be available for some time.

These are the powders I could find available. What would you try.

IMR 4064
H380
IMR4350
Winchester 760

Another question I have is looking at three different reloading manuals for reloading and I see different data from minimum and max loads for the same powders and bullet weight, what gives on that

[Sam Menard]

I tried W760 in my 3006 and accuracy sucked. What bullet and weight do you plan to reload?

[rf2]

H4350 is awesome in the 30-06, so it might be good for the 270 Winchester too. I understand that it is very close to IMR4350 if that's all you can get your hands on.
Regarding different load ranges in different manuals, yes, this is common unfortunately. What I do is just be very careful when approaching any max load from any manual. If you don't notice issues, then you should be good to proceed higher, as long as it is not higher than the highest max in all the manuals you consulted. Anyway, once you exceed the lowest max, treat every load as potentially dangerous, and pay close attention.
Another thing to look for is the type of rifle that the load was developed for in the manual. Take that into consideration when you decide which load range to use. If your action is weaker than the action used to develop the info in the load manual, think twice about using max loads.
Finally, personally, I don't find that max loads produce the best results in terms of accuracy. They are also harder on brass, your gun, your shoulder and your wallet.

[Kilo Charlie]

I've loaded only a little for the .270 Winchester, but have loaded extensively for it's near-twin, the .280 Remington. My favourite powder for both is H4831, or IMR 4831 if the H version is unavailable.
That said, if I only wanted to try just one powder from your list, I'd go with the proven performance of IMR 4350; it's famous for providing great loads for the .270 and the .30-06.
The others all look good on paper as well, but a ton of shooters trust IMR 4350. I know from experience that it's GREAT in the .30-06 with 150's.
H4350 is similar, but a bit less temperature stable, although I think temperature sensitivity gets more press than it deserves sometimes.

[diverduck]

IMR 4350 will probably do what you need to do from that list, but there are no guarantees in reloading. I have used it as a starting point for a number of loads in different calibers including 30-06 though, with good reliability. It’s where I would start given your options. Also, reloading manuals vary, that’s a given. As the other poster stated, I’m usually below max with most loads also, and usually find decent accuracy in the mid range of most load data as well.

[Stu]

Another vote for IMR4350. I worked up a load for a friend years ago and it worked very well.
I doubt you could go far wrong with any you mentioned but as KC mentioned H4831 or IMR4831 would be my next choice if available.

[Fox]

Another question I have is looking at three different reloading manuals for reloading and I see different data from minimum and max loads for the same powders and bullet weight, what gives on that

They are probably designed around different bullets, cases and primers, these will all have an impact.

Start at the minimum and work up, simple as that.

Case thicknesses can have a massive impact on pressure, for example, PPU brass in my 6.5x55 has pressure signs with just above min load data with IMR4831 and the 143gr ELD-X bullet but Remington brass I am half way up the load data before I get any pressure signs.

As a side note, a different power, I have max loads with no signs of pressure at all, so they do all burn differently and all need to be worked up on their own.

[Big Jack]

I’d use the 4350. It has worked well for me.

[overtheir]

Regarding manuals well I had that experance aliitle awhile ago with the 300mag thought it was the primers but it was the powder , I went to the powder manufactor site and they had a differant max load than the manual , called Hordany they said they review all data and adjust there data as need actually they dropped the powder from the manual I use , thats why you may see a spread in min and max loads

[spanky289ca]

I have used IMR4064 for years with my 270. I have a pound of RL22 that I am planning to try one of these days.