I have had this cadet for several years and decided to try to develop a load for it.

With new Winchester Brass, primer drilled to 3/32, 68.5 gr. 1 1/2 Swiss BP, compressed with a Woff die,.025 card, and 485 gr. 20/1 lead Lee 500 .459 bullet.
This is the target I shot at 200 yards with the bottom peephole set at 200. The bottom shot I pulled I am not sure about the top.

The other holes were shot by my son with AR-15 at 150 yards

With new Winchester Brass, primer drilled to 3/32, 68.5 gr. 1 1/2 Swiss BP, compressed with a Woff die,.025 card, and 485 gr. 20/1 lead Lee 500 .459 bullet.
This is the target I shot at 200 yards with the bottom peephole set at 200. The bottom shot I pulled I am not sure about the top.

The other holes were shot by my son with AR-15 at 150 yards

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