I fill the hollowpoint with glue gun leaving a blob of glue
on the outside.After it is hard shave it to a point with
trim knife. it is hard enough to stand air pressure but
yet allow the slug to mushroom.

I don't make guns for sale, just tell folks what to get
them and what to do to get big powerwith them,
and found sources of slugs, cases, better powders
to use. Rob the fellow who's idea this was will be making
cases. RMC is making cases, We have developed hopped
up loads for brass and plastic cases.Ed