HighValleyRanch
New member
Just experimenting today with soft loads for my 9mm's.
Started with 3.5 hp38 and 115 Berrys plated, and had to hand cycle.
Then with 3.9 hp38 it was very soft and cycling reliable in both my Glock 19 and Shield 1.0 40 with 40 to 9 conversion barrel and the original 40 spring.
But only have a limited amount of 115 grain, and found I had a ton of 124 grain plated RN flat base.
So loaded the 124 grain with 4.0 hp38 and it seemed a little snappier, but reliable.
So the question is, when loading a heavier bullet, the bullet takes more case space and is heavier to move, so I imagine there is a pressure increase with the same amount of powder, right? So can I decrease the powder amount so that given a heavier bullet and less case space, the pressure would stay the same as the 115 grain?
In other words, pressure wise, would 124 grain with 3.7 hp38 be similar pressure to 115 grain bullet and 3.9 gr. HP38?
Any problem on downloading until the pistol does not cycle properly to find the minimum load? This is just for paper and practice.
Started with 3.5 hp38 and 115 Berrys plated, and had to hand cycle.
Then with 3.9 hp38 it was very soft and cycling reliable in both my Glock 19 and Shield 1.0 40 with 40 to 9 conversion barrel and the original 40 spring.
But only have a limited amount of 115 grain, and found I had a ton of 124 grain plated RN flat base.
So loaded the 124 grain with 4.0 hp38 and it seemed a little snappier, but reliable.
So the question is, when loading a heavier bullet, the bullet takes more case space and is heavier to move, so I imagine there is a pressure increase with the same amount of powder, right? So can I decrease the powder amount so that given a heavier bullet and less case space, the pressure would stay the same as the 115 grain?
In other words, pressure wise, would 124 grain with 3.7 hp38 be similar pressure to 115 grain bullet and 3.9 gr. HP38?
Any problem on downloading until the pistol does not cycle properly to find the minimum load? This is just for paper and practice.