thanks to the useless internet this rifle became no more known than ever before
live on forgotten weapons
https://www.youtube.com/watch?v=klgfB78vUuM

see the idea of a danish handloader who was making the hard to find 8x58RD case by using 300 Win Mag brass what is a good idea also if it not was my own.
knowing I had a bag with 300 win mag brass in the basement somewhere start to looking for. was known to put this brass on a good place once where I can find it easily when in need. well I find such things like 5,6x52R brass but not this stuff. so a case from my case sample collection had to bit the bullet for a test.

belt turn down and 12,98mm case body tapered to 12,70 mm over the rim, anealed

full length resized

cut down and loaded with .310 bullet for functional testing

the inventor was writing he use this brass in a swedish rolling block and it works fine. in the schultz&larsen the cartridge was loaded and extracted without any problem. but ... original rim diameter is 14,8mm and this one have 13,4mm so the extractor grip the case but when reaching the ejector its just enough touch to lose it from the bolt. so the case laying in the receiver you have to turn the rifle to the left and it falls out.
meaning you dont have to look for your brass after.

the 300 Win mag case with its sharp shoulder is allways a challenge. when making a bigger lot I will start with a 11,15x60R and a 9,3x53R die before it get full resizing with the 8x58RD die.