I finally managed to find some 7.5x55 brass (one bag only, though 
), got some loads made up and got out to the range with my new to me K31.
First, the rifle:
I made up some loads using PRVI 150gr FMJ and 168gr Amax bullets and IMR4064 powder. Brass was Norma.
A great way to start the day, the sighter at 50yds just to see if POI was anywhere close. It was 3 rounds of light charges under the 150gr FMJ bullet:
I could have just quit right there!
All of the remaining groups were shot at 100yds with the issue sights using a front rest and tail bag. The black is 5.31" in diameter.
The 4 charge weights tested with the 150gr FMJ bullets:
It looks like 45.0gr of 4064 will require more investigation. That group measured at 1.25", about as good as my fuzzy eyes are ever going to manage with the issue open sights.
Now the 168gr Amax's:
Best group here was 1.38" with 42.0gr of 4064.
I will be getting a bolt on scope mount to let me use optics for the remaining load development, then it will be back to irons for regular shooting.
The rifle had a very decent trigger for a milsurp and was very smooth operating. I understand why they are held in such high regard, it is a superb piece of equipment with a well-fitted, precision feel to it.
Mark
), got some loads made up and got out to the range with my new to me K31.First, the rifle:
I made up some loads using PRVI 150gr FMJ and 168gr Amax bullets and IMR4064 powder. Brass was Norma.
A great way to start the day, the sighter at 50yds just to see if POI was anywhere close. It was 3 rounds of light charges under the 150gr FMJ bullet:
I could have just quit right there!
All of the remaining groups were shot at 100yds with the issue sights using a front rest and tail bag. The black is 5.31" in diameter.
The 4 charge weights tested with the 150gr FMJ bullets:
It looks like 45.0gr of 4064 will require more investigation. That group measured at 1.25", about as good as my fuzzy eyes are ever going to manage with the issue open sights.
Now the 168gr Amax's:
Best group here was 1.38" with 42.0gr of 4064.
I will be getting a bolt on scope mount to let me use optics for the remaining load development, then it will be back to irons for regular shooting.
The rifle had a very decent trigger for a milsurp and was very smooth operating. I understand why they are held in such high regard, it is a superb piece of equipment with a well-fitted, precision feel to it.
Mark
