Prod Mod ??

[Berky]

I've read about opening up the breach valve to 11/64. Is this a popular mod? Does anyone have a pic of this?
I've picked up over 100fps with the .118 transfer port. Whats the best hammer spring? I'm looking to shoot in the mid 800fps range

[Norm_m]

I'm using a Disco factory spring in my PRod and it did make a huge difference. I'm up in the low 800's but I could increase the spring pre-load a little more and be in the mid 800's. Tool out a fox with it at 41 yards the other day. One shot to the head and down he went, he was moving a little so a second shot to the head and he never moved again. Fantastic little guns!!
Norm