I have an OM SBH I have been trying to get to shoot and it has been a struggle. Throat size is .431 and that is what I have been sizing to but still experiencing poor accuracy and leading. Gas check bullets help the leading but accuracy is still mediocre. So I decide its time to slug the barrel and low and behold its .432. So now I need to have the cylinder honed to .433 and get an appropriate sizing die. Fortunately my molds drop large enough with my alloy to make it work.
Gun is an unconverted OM SBH in fantastic condition but I think I am finding out why I got a "Good Deal" on it.
Is anyone else seeing this large a bore with there SBH. Seems on the large side to me.
Thanks
Mike