IMR 4198?

[SealT5]

Anybody use this powder. For some reason my Father in Law has 2lbs of this powder and has given it to me. I shoot 22 & 6 Dasher, 22x47L, 7saum and 6.5mm cartridges. Any info would be appreciated

Joe S.

 

[gunsandgunsmithing]

Not a good choice for any of those..too fast.

 

[Murray Brook]

Great powder in the 222 Rem.

 

[jpetteruti]

If you shoot a 30BR in score competition, its the one to use.

 

[TrxR]

Whats the difference between 4198 and h4198?

 

[Straightshooter1]

Whats the difference between 4198 and h4198?

Not much difference at all, they're virtually the same burn rate, and they're kinda fast burning, which is good for the shorter barreled smaller caliber rifles.

 

[Zero333]

It could work in the 22 dasher with 40 / 45 gr bullets. But that's about it.
I personally would not try such light bullets in fast twist tubes.

 

[Evan]

Reduced loads it could work nicely for the 6 or maybe 22 Dasher.

 

[Intheshop]

Accuracy loads with 4198 back in the 1970's for the .222;

Is what I load cast 55's in .223 bolt guns these days. Somewhere around 19g,bullet seated well into the lands. Keep runout to bare minimum,play with neck tension and due diligence to overall case/chamber neck clearances when choosing bullet size. I'm usually around .2265 on finished bullet O.D. Keep lube to the absolute minimum,just a tiny bit above GC.... no more. In a 12T,you're looking for a node @2600 -2700.

 

[Intheshop]

Here's what I'm looking for on seating depth.

 

[Hotshot]

Go to powder in fireball size cases. IMR seems to be slightly hotter than H. H meters better in my powder measures.

 

[Straightshooter1]

Go to powder in fireball size cases. IMR seems to be slightly hotter than H. H meters better in my powder measures.

Yeah . . . according to what I see in the QuickLoad app, IMR 4198 produces a little more pressure and velocity than H-4198. Also, IMR 4198 takes up more case volume than H-4198, which suggest to me why it might tend to meter better.

 

[JimPag]

If you shoot a 30BR in score competition, its the one to use.

You are totally wrong that IMR4198 is the powder to use in a 30BR. H4198 is THE powder to use in a 30BR.

 

[Dusty Stevens]

You are totally wrong that IMR4198 is the powder to use in a 30BR. H4198 is THE powder to use in a 30BR.

Exactly. Cant get enough imr in there to work

 

[topclass2017]

50g V-max pushed by 4198 in a .222. Hard to beat!

 

[lpreddick]

Exactly. Cant get enough imr in there to work

A long drop tube will allow one to get more IMR's long kernels in a small case. H4198's kernels are shorter.

 

[Walt Krafft]

I have a friend that uses 71 grains h4198 under a 350 grain bullet in a smokeless powder 45 caliber muzzle loader. Recoil is stout lol.

 

[Dusty Stevens]

A long drop tube will allow one to get more IMR's long kernels in a small case. H4198's kernels are shorter.

I use a 14” just to get enough H in there. You cant get any more powder in a 30br than i can and the imr is still not enough. Its the reason people use hodgdon in em

 

[68cuda340]

IMR 4198 behind a 50gr SPSX in my .222 has been my go to prairie dog load for years!
1/2" MOA at 100 all day long

 

[fantastic]

Best suited to smaller cartridges like the 222REM, the 223REM plus the bigger straight walled cartridges like the 444MARLIN and the 45/70GOVT. You have found no data for the cartridges you mentioned because IMR4198 is NOT well suited to any of them. So, you got two pounds of it, huh...sounds like a great excuse to buy a new 45/70 rifle to me.