IMR SR 4756 in .45 Colt

[Rattlesnake Charlie]

I have an unopened 5 pound can of this powder that I plan on loading .45 Colt with 255 gr RFN bullets. What data I've found is Start 7.0 and Max 8.6. Anyone have experience with this powder in this caliber?

[Markopolo]

I don’t, but I also have near 5 lbs I been holding for a long time… so I will be watching

[txbirdman]

Can’t say about the 45 Colt. But 8.1 gr is my favorite load in my Colt SAA in 44 Special with 429421’s.

[Bent Ramrod]

Propellant Profiles lists up to 12.5 gr SR-4756 behind the 255gr boolit in .45 Colt. I stay around 10.2gr for my Cimarron SA in .45 Colt, and the load seems to do well in an original SA and a S&W 25 as well.

[sharps4590]

I was given several pounds of SR-4756 and SR-7625. I've had good results from both of them in big bore revolver cartridges; 44-40, 45 Colt and 44 Spl. with their standard weight bullets.

[NObamain2012]

It is my favorite powder for medium loads in 357, 44, 9mm. Also great for 20 and 28 ga skeet loads and 12 ga 1 1/4 field loads. I'll miss it when it's gone

[Divil]

It has been years since I loaded 7625 and 4756 in .45 Colt, but the 4756 loads had a sharper recoil impulse than the 7625, so I would not make any 4756 load hotter than truly necessary.

[Mal Paso]

I don’t, but I also have near 5 lbs I been holding for a long time… so I will be watching

I'll bet someone would trade you primers for that. Production ended a few years ago and not for lack of demand. Excellent single base medium pistol powder.