Haven't used it, but seen it many times - BTW some history (for fun if nothing else

).

Bullet is a brainchild of Mr. Brenneke. Here is a predecessor from 1905!:

TIG (ID classic) followed in 1917 - so it is over 90 year old design - still first choice for many here in EU. I have a couple pics of recovered TIG's:

1. 178gr. 2450fps 7x57R from boar:

2. 150gr 2980fps (factory stated) .30-06 from boar: