bigbore442001
Member
I wanted to see what the results from an 18" barrel out of the Kahnke M82 pistol. I originally bought it with a 14" barrel but then decided to have Gordon make up an 18" tapered barrel for my little project.
Out of the 14" barrel 90 grains of H777 with a 300 grain TC power point sabot would generate an average velocity of 1265 fps. The highest velocity came from a clean barrel at 1365 while the lowest was 1200 fps.
I shot four different types of bullets over the screens today with the 18" barrel.
Load No.1: A 90 grain charge of H777 with a 240 grain lead HP in a black sabot produced the following.
1639
1683
1732
1710
1639
Load No.2 : A 90 grain charge of H777 with a 240 grain JHP TC black sabot.
1660
1666
1675
1710
1711
Load No. 3. I only had two 300 grain TC power point sabots in the black powder box. I know that results would be better with a larger number of shots but it is better than nothing.
1587
1615
Load No. 4 This consisted of 90 grains of H777 under a 348 grain Buffalo Bore copper plated hollow point. This bullet has a green plastic doughnut base that obturates in the bore and separates upon exiting. The results :
I don't know. The little green plastic doughnut carreened through the LCD display of the Shooting Chrony. So it will be wrapped up and sent back to the factory for repair.
All in all it was a fun day up to the point of the accident.
Out of the 14" barrel 90 grains of H777 with a 300 grain TC power point sabot would generate an average velocity of 1265 fps. The highest velocity came from a clean barrel at 1365 while the lowest was 1200 fps.
I shot four different types of bullets over the screens today with the 18" barrel.
Load No.1: A 90 grain charge of H777 with a 240 grain lead HP in a black sabot produced the following.
1639
1683
1732
1710
1639
Load No.2 : A 90 grain charge of H777 with a 240 grain JHP TC black sabot.
1660
1666
1675
1710
1711
Load No. 3. I only had two 300 grain TC power point sabots in the black powder box. I know that results would be better with a larger number of shots but it is better than nothing.
1587
1615
Load No. 4 This consisted of 90 grains of H777 under a 348 grain Buffalo Bore copper plated hollow point. This bullet has a green plastic doughnut base that obturates in the bore and separates upon exiting. The results :
I don't know. The little green plastic doughnut carreened through the LCD display of the Shooting Chrony. So it will be wrapped up and sent back to the factory for repair.
All in all it was a fun day up to the point of the accident.
