I thought I would try a K-31 Swiss 7.5X55 on our 1,200 meter range. This rifle along with a number of other Milsurps lives in the gun room. I found a 20X scope and mount for the K-31. The first test were with military loads using a 173 grs FMJ these shot great at 100 yds. They were very good keeping hits very regular on the 600 meter gongs.
I have read that the K-31 will not shoot the BT bullets. I order .308 BT 147 grs. bullets from Widners to feed my Garands. Having 1,000 of these bullets I decided to find out if the K-31 would shoot the BT.
After trying a number of powders with only marginal success I settled on Rl-15. The final load is 50/RL-15 fired by a Federal Gold match LR the K-31 will keep 5 well under 1 inch. This load should work well out to 700 meters. Some day very soon we will try ringing that 40 inch plate marked 700.