Shot a CAS match yesterday with my 44 (Colt and Special) Uberti 72 Opentops using 44 Russian cases with 200gr RNFP bullets, smokeless lubed, and 13gr by weight of 2f 777. Powder comes to the base of the bullet with little or no compression. According to a chart I have, it should be equivalent to 21 gr of 2fg GOEX black powder. Shoots very well, accurate and smokey, mild recoil, no hint of fouling that would slow the gun down. Easy cleanup.