Imr-4756 & 45 lc...

[BCB]

Any thoughts using this powder with the 45-270-SAA (273 grains)...

Appears to have a burn rate in the Unique range...

The handgun would be a Blackhawk...

Thanks...BCB

[felix]

Excellent choice. Not like Unique, but Herco. For 250 grainer 44 boolits, about a half grain faster than Herco. 10 grains max in that, so start with 12 grains in 45Colt unless someone else has a choice load. The powder is exceptionally clean burning and WILL take reduced loads well. ... felix

[BCB]

Excellent choice. Not like Unique, but Herco. For 250 grainer 44 boolits, about a half grain faster than Herco. 10 grains max in that, so start with 12 grains in 45Colt unless someone else has a choice load. The powder is exceptionally clean burning and WILL take reduced loads well. ... felix

Ahhhh, haaaa...

So if it is a bit slower than Unique and I am using 9.0 grains of Unique with the 283 grainer (I made a mistake saying 273 grains in my previous post). Could a guy start with that load rather than 12 grains and work towards that 12 grain load?...

Thanks...BCB

[frnkeore]

I find it to be a lot closer to Unique than Herco.

Frank

[BCB]

I find it to be a lot closer to Unique than Herco.

Frank

But, is that when used in an application with the 45 LC and the 283 boolit?...

BCB

[felix]

Sure, Bruce, 9 grains might be light, but OK. ... felix

[BCB]

felix,

You are correct, as usual!!!...

I did start with 9.0 grains and I have worked up to 12.0 with no pressure signs at all...

I did chronograph the light loads, 9.0 grains of SR-4756 and it is nearly 300 fps slower than the same charge of Unique...

It certainly is much slower than Unique, and maybe slower than Herco?...

Regardless, I feel very secure moving up 0.5 grain at a time from the 12.0 grains recommended as the starting load...

Thanks for the data to begin with...

BCB

[dougader]

I've seen 4756 listed in the data books and had wondered about it. Sounds like a good powder if it burns clean even when downloaded. I have also heard that is has less flash than a lot of other powders.

Tell me, though, does it meter well? Better than Unique, for example.... or more uneven like 800X?

[felix]

Measures like a ball powder. ... felix

[9.3X62AL]

Measures like a ball powder. ... felix

Yessir, very even charges through my RCBS Duo-Measure.

This fuel is THE POWDER for 32-20 WCF revolver ammo. The wild velocity swings encountered with other powders disappeared immediately, and group sizes shrunk DRASTICALLY. Team up a S&W M&P x 5" with 6.0 grains of SR-4756--either #311316 or #311008 or similar boolit sized to the throats--and a small pistol primer, and go hunting. If the revo is smaller--Colt PP Special--tone the powder down to 5.5 grains, and hold on.

[BCB]

Measures like a ball powder. ... felix

Yep...

Much better than Unique...

BCB