I have been shooting desperado bullets for many years, they are the only bullets I have found that will fly straight and true from my circa 1995 over bored rossi 92. .434-5 groove diameter vs .429 spec. Hard Cast bullets don't group less than 5 inches at 25 and many keyhole. At 50 yards much higher incidence of keyhole. The desperado bullets fly true shoot about 5 inches at 100 with round holes. I do not get leading in the rifle.