How do I know if my Husqvarna M1907 is matching? Well... (pics)

[Claven2]

And now for some loaded ammo comparisons. Left to Right: 1) 9mm Para 2) 9mm Browning Long 3) .380 Auto.



For my starter load for 9mm BL I'm going with 3.9gr of HP38 (aka W231). Starter load for 9mm para in the Lee and Hornady manuals for HP38 is 4.3gr with 1100fps velocity. Although the BL case capacity is more, the bullet needs to be deep-seated to an OAL of only 1.10" to fit the mag, so useful capacity for the BL is actually slightly LESS than in 9mm para if, like me, you use readily available standard 115gr 9mm para projectiles. .380 auto projectiles would perhaps be better allowing greater case capacity and lower pressure, but alas I didn't find any when I went shopping - lol.

In any event, I lowered the 9mm para minimum load of 4.3 to about 10 percent less at 3.9gr. I'm thinking I should get about 1050fps and close to starter 9mm para pressures which should be about right and still cycle the action. I'll post more when I've had a chance to try it out at the range.

For the record:

- Cases are Starline .38 Super +P brass trimmed to .790"
- Primer are Winchester small pistol primers
- Bullets are Remington 115gr 9mm (.355")
- Powder is some W231 I had on the shelf, 3.9gr. I'm told W231 is being completely replaced by the equivalent HP38, so loads should interchange.