The above post was from my thread on .33 Winchester primers earlier this year.
I was hoping that the images would copy over (Imgur having blocked the UK I can no longer upload them afresh).
The protected primers, according to a c.1912 Winchester catalogue, are Winchester 5 1/2.
My rifle has @ good bore (I had a chance to inspect it before bidding).
I chronographed 3 rounds of the Remington Kleanbore. Despite being about 75 years old they performed well and all shot to the same elevation at 100 yards.
Last edited by Parabola; 11/12/25 04:48 AM.