Change spring to use different ammo?

4 Scale · 09-29-2017, 02:08 PM

I had a .30 Luger that would shoot PPU but not Fiocchi, and I tried different mainsprings to see if if a change would improve performance with Fiocchi.

I began with a spring that was too strong, and progressively weakened it until the spring was so weak that it would not close the action on the next unfired round. I was unable to find a stronger or weaker spring that improved performance with Fiocchi. I enjoy things like this, I probably tried about seven different springs in the pistol. Needless to say I got pretty good at changing the Luger mainspring.

My conclusion is some Lugers work with Fiocchi, some don't, and when they don't it is better to use PPU exclusively in that pistol. Like others, I own some .30 Luger pistols that work fine with either Fioochi or PPU.

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09-29-2017, 02:08 PM	#11
4 Scale User Join Date: Nov 2014 Posts: 544 Thanks: 194 Thanked 490 Times in 251 Posts	I had a .30 Luger that would shoot PPU but not Fiocchi, and I tried different mainsprings to see if if a change would improve performance with Fiocchi. I began with a spring that was too strong, and progressively weakened it until the spring was so weak that it would not close the action on the next unfired round. I was unable to find a stronger or weaker spring that improved performance with Fiocchi. I enjoy things like this, I probably tried about seven different springs in the pistol. Needless to say I got pretty good at changing the Luger mainspring. My conclusion is some Lugers work with Fiocchi, some don't, and when they don't it is better to use PPU exclusively in that pistol. Like others, I own some .30 Luger pistols that work fine with either Fioochi or PPU.