I recently bought this mold.... http://leeprecision.com/mold-dc-c429-240-swc.html
Makes great bullets, but I need some load recipes/tips. Want to use this in my Winchester rifle, so I tried one test round at max load of 24 gr of IMR4227, according to my Lyman manual. This was so full, and had to be compressed so much, that the bullet seating plug mashed the bullet ogive completely round. Wasn't a SWC anymore!
Yeah, ain't gonna shoot that one. Knocked the bullet out, but the gas check is still in the case, crammed down on the powder charge, and ain't interested in coming out. It's a souvenir now.
Tried lighter charges of 4227 at 22gr and 21gr, both of those bullets also had the ogives deformed by the seating plug and the pressure to compress the powder. Hesitant to shoot those too, got 'em set aside.
Looks like I need a different seating plug from Lee.
What I'm asking for is any recipes for this bullet in .44 mag for rifles, that are safe and proven. I prefer 4227 because I have plenty, but I do have some H110 and Win296 too, but not much. I'm trying to find a cast load that this Winchester likes.
Oh, these are supposed to be 240gr., but with the gas check they weigh around 253gr. (!)