Perry
(.275 member)
25/04/11 11:24 PM
Re: Saturday's casting session

I have been amazed at how long the steel bullet moulds stay hot. I must try working with 2 moulds next time.

Some questions if I may 450, I notice it appears to be more than one calibre from the base of the projectile to the top of the crimp groove on your 358009 mould. I understood it was undesirable to have the base of the projectile protrude into the powder space as it could promote leading through gas cutting. Naturally if the Whelens case neck matches this the question does not apply.

When the gas check is seated on the 358009 mould or a Mountain Mould for example would you know if the Gas Checks wall thickness is designed into the length from base of projectile to the top of the crimp groove when the moulds are manufactured. If not when you seat the gas check it effectively increases this measurement and may cause the base of the projectile to protrude into the powder space a little.

regards Jacko



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