IM4350

Tflogger

What do you use Im4350 for?

nononsense

Tflogger,

From their website:

The number one choice for the new short magnums, both Remington and Winchester versions. For magnums with light to medium bullet weights, IMR 4350 is the best choice.

In 1910 MR #10 was designed for the .280 Ross. Large grains 0.033-inch diameter and 0.12 inches long were intended to slow the burning rate. MR #10 was replaced by IMR #13 in 1917 for high-capacity bottleneck cases. Grains of 0.035-inch diameter were 0.08 inches long.[4] IMR #4350 replaced IMR #13 in 1940. Grains of 0.038-inch diameter are 0.083 inches long with 5.5% DNT coating.


I have used it for testing in both the RSAUMs and the WSMs with decent results. But it is a flexible powder and can be used with the .30-06 although it is too slow for best choice in the .308 Win.

Best.

richarda

Will send this thread to two friends of mine who have each recently acquired Ross Model 1910 rifles in .280 Ross.

Tflogger

Thank you, I use it for 7x57 and 30-06 and 30-40.
Just wanted to know what other people used it for.

Okie743

I use it for reloading rifle shells.

But most of the guns I have tested for accuracy like H4350 as a more user friendly choice instead of IMR4350.

243 caliber area rifles seem to like the H or IMR4350 powder for accuracy using 85-100 gr bullets.

The IMR4350 seems to be little more critical of powder weight for consistent accuracy as compared to the H4350.
and
I've used H4350 in several calibers with good accuracy from 223, 243, 30:06, and some magnums. When first accuracy testing H4350 a rifle seems to either like it or not at a medium weight charge immediately, whereas IMR4350 you can be off by 1 grain and the group opens up immediately.

I've quit buying IMR4350 and use H4350 instead for the above reasons.
and when someone tells you the two powders are interchangeable and the same they are full of BS.

Tflogger

quote:Originally posted by Okie743
I use it for reloading rifle shells.

But most of the guns I have tested for accuracy like H4350 as a more user friendly choice instead of IMR4350.

243 caliber area rifles seem to like the H or IMR4350 powder for accuracy using 85-100 gr bullets.

The IMR4350 seems to be little more critical of powder weight for consistent accuracy as compared to the H4350.
and
I've used H4350 in several calibers with good accuracy from 223, 243, 30:06, and some magnums. When first accuracy testing H4350 a rifle seems to either like it or not at a medium weight charge immediately, whereas IMR4350 you can be off by 1 grain and the group opens up immediately.

I've quit buying IMR4350 and use H4350 instead for the above reasons.
and when someone tells you the two powders are interchangeable and the same they are full of BS.


Thanks for the info, might be getting a .243 soon.

goldeneagle76

I will be using it for 6.5 creedmoor if I cannot find H4350

nononsense

goldeneagle76,

While the 6.5 Creedmoor is generally regarded as a '4350' cartridge it is not necessarily limited to just those powders. Having reloaded and shot the 6.5 Creedmoor in competition and while hunting, I have worked on loads using AA4350 with good success but there are three other powders which can perform admirably if your particular set up likes them.

I would consider Ramshot Hunter, Norma URP and VVN-550 as possible challengers to the dominance of any of the 4350's except AA 4350.

Best.

norgexxx

I agree wholeheartedly (mostly) with nononsense's assessments, though why anyone would buy a 6.5 Creedmore is beyond me.....just load your .260Rem for low-recoil loads, but I digress. I would add this to the mix. Nowdays it seems like many like the shorter quick handling rifles, and in that vein I would admonish one to not bother using IMR 4350, or 4198, or 7828, and others unless you are using a firearm with AT LEAST a 24" barrel. Anything shorter and you are only impressing (or annoying[:(!]) the neighbors with your spectacular muzzle blast and flash, as so much of your energy is expending itself outside of the barrel[xx(]. If you are shooting any of the short-mags in a 22" barrel or shorter, do yourself a favor and load a faster burning powder, IMHO.