H 4198

[T2C]

I had a few pounds of old IMR 4198 laying around and used it up reloading .223 ammunition. A decent 55g bullet with IMR 4198 is good enough for training with a carbine out to 200 yards.

IMR 4198 is good powder for light 8mm Mauser and 30-06 loads if you are into old bolt guns.

[Krazykarl]

This is the personal insight that I need besides on line reloading recipes. I just need to know if this stuff will work for training.

[markm]

Markm,

That is my objective. To generate as much range ammo for my ammunition hungry boys. 52gr or 55gr bulk bullets, about 20gr of powder, and fun to be had!!

I love guilt free blasting powder. I'm cheaper with my H322 because it's hard to get and it's my 77gr OTM go to. So a powder I don't love is always welcome.

[jsbhike]

Grab Hornady 55gr fmj and you should get fairly good accuracy too.

Powder burn rate chart fwiw.

https://bulletin.accurateshooter.com...able-download/

[jsbhike]

Grab Hornady 55gr fmj and you should get fairly good accuracy too.

Powder burn rate chart fwiw.

https://bulletin.accurateshooter.com...able-download/

[Krazykarl]

Ah, slightly faster then tried and true H322. Thanks!!

[DG23]

I have 8 pounds of IMR 4198. Best application is for cartridges that I don't have (like 45/70). But, i do have a few cartridges that should work. What do you guys suggest for application in the following cartridges:

1. 223
2. 30/30 (30 remington model 8)
3. 6br
4. 30 carbine
5. 6.5 swede

Right now, I believe that 223 with 55gr bullets is probably the best use.

I tried that once.

My advise here is to most definitely try / move forward in small batches as you feel that stuff out in your particular AR's and with whatever particular bullet you are using.

While it might do great in a test barrel on a rest and measured and published by whoever... It may not work out so great with your particular gas gun.

[2ndtimer]

I may have had that backwards.16" is preferred over 20". I read that recommendation over a year ago.

Most carbine length gas systems (most common on 16” barrels) are overgassed, and should be able to run the IMR-4198 loads with 55 gr bullets. The rifle length gas systems (common on longer barrel AR’s) may not run the IMR-4198 loads.

[Krazykarl]

Yesterday, got out and tested this powder in my Colt M16A4. Started at 19.5gr H4198 and stopped at 21.5gr with 5 rounds for every 0.5 increment. Used mixed brass with mixed primers using old Nosler 52gr CC bullets. Truly a mutt load for blasting.
19.5gr produced 2650 fps and 4" group
20.0gr produced 2724 fps and 1" group
20.5gr produced 2819 fps and 1.5" group
21.0gr produced 2839 fps and 1.5" group
21.5gr produced 3000 fps and 0.75" group

All rounds operated the rifle. No pressure signs upon brass/primer inspection. Light recoil for all. Temperature at range was 32F.

[Krazykarl]

Yes,

I do realize that the title states IMR. However, once I dug the jug out of the powder cabinet, I was surprised to read H4198.
Sorry about any confusion....