From a thread over on Accurate Reloading.:
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Originally posted by jorge:
Folks: This probably belongs on "reloading" forum, but being the African Forum is my "home" and we are talking about an African caliber, I thought the following response from Olin/Winchester regarding the 375 H&H might spur some interest/concerns:
Thank you for contacting us at Winchester Ammunition inquiring about our 375 H&H brass.
Please be advised that this is a seasonal product and is made to order once a year for the distributors that have them on order. However, because we did not get enough orders for the brass, as well as the 375 H&H loaded round, they were not produced this year. The earliest you would see it would be next year, provided we receive enough orders to warrant production.
Thank you for your interest in our products.-------------------------
Jorge and I found some W-W .375 brass over at Lock, Stock and Barrel.
http://www.lockstock.com/ I don't know how long their inventory will last. We both ordered 500 cases so we've have enough to last us a while.
-Bob F.