Greetings,

I have a Tommy gun that is only a few months old, I am following the instruction from the manual exactly as written. The problem is after I have loaded the twenty round mag (with 230g ball ammo) and release the bolt 90% of the time a round gets jammed. It's so new that the springs are extremely stiff, making opening the bolt a real SOB. I haven't even tried the 50 round drum yet because of this.

Any help would be greatly appreciated.
Thanks.