I am looking at a very clean black pad No. 1 RSI in 7x57. I had a red pad 7x57 RSI several years ago, and I could never get it to shoot satisfactorily. A couple of acquaintances surmised that it might have been chamber with the old original long-throated chamber. However, I never got around to measuring it before I had a chance to trade it.
Does anyone know for sure how the black pad RSIs are throated? Thanks!
