Something I did to add versality to many 30 cal cast bullets is to have a nose sizing die made. The nose sizer fits the lube sizer press just like lube sizer dies but it has no lube holes in it. It is used to size the forward portion of a cast bullet from groove diameter to bore diameter.
This allows the adjustment of a bore ride nose length even in long bullets that are groove diameter for most of their length such as in the heavy for caliber Loverin designs.
With the nose sizer the bore ride nose length can be adjusted to be compatible with any neck length long or short as in the 300 Savage for short or the 30-40 Krag for a long neck. The bore ride section can be adjusted so that the groove diameter section of the bullet is always a perfect fit in any case neck length always seated exactly to the bottom of the case neck but never further.
As a for instance I have a custom 30 cal mold that drops a 230 grain bullet that is smooth lacking any lube grooves intended for powder coating and as cast is groove diameter for most of its length. I first coat the bullets as cast then by nose sizing adjust the bore ride length so that the portion of the bullet seated in the case never extends past the case neck into the powder cavity.
In practice with your bullet what I or you could do is to nose size the forward portion of your bullet to bore ride diameter, in my case my nose die sizes to .301" and leave the bottom one or two drive bands to .308" the as cast size of your bullets base band.
In that way the modified nose portion can be seated to a OCL that has the .301" modified nose section riding on the lands to maintain a good alignment with the bore center and in this way no tipping of the bullet can occur as the bullet is entering the bore on ignition of the powder.
For the cost of one sizer die nose sizing adds a tremendous amount of versality to all many cast bullet designs in that caliber. Now having a nose die in 30 caliber has me re-evaluating many of the old Loverin designs that I have previously rejected as having too much bearing length and so would have to be seated far to deeply especially in chambers with very short lead length.
