IMR 4227?

[daniel lawecki]

Finally loaded some IMR42227 behind a 250 grain SWC only 12 rounds at 20.3 grains CCI mag primer will shoot this later today or tomorrow. These won't go in the S&W but my Ruger SBH with a 10'' barrel with a scope.

 

[daniel lawecki]

Shot those rounds today and I'm going bump the charge by 1 grain. So far so good Sunday will be another test day. Not looking for warp drive but for accuracy.

 

[Cumminsdood]

I use 4227 in my 454 240gr loads. Most accurate and least abusive load I have found

 

[rwsmith]

I was in my reloading books......

I was in the books last night and asked the question, "Why is 4227 rarely discussed as a more energetic powder between reloaders but it's all over the data tables. I'm looking for something that will give more velocity than Unique or other medium burners but not full magnum.

I think IMR is best known as 'rifle' powder. After all, IMR stands for "Improved Military Rifle" and they don't have many handgun powders in their product line at all.

 

[Nemo288]

I have noticed at the Hodgdon load data site they have quite a lot of data for the H4227 but little for the IMR version.
Since the "H" version has been discontinued this is curious.
At least in a caliber where this is the case the "H" data would give one an idea where to start with the low load and IMR 4227.