 
                     
                Since im stuck with the splitted versions and had the opportunity to test my designs here are the latest versions of my 12gauge x 68mm inserts.
Still: don't add any powder to them! 
print them slow, steady and sturdy.
Print them in PLA+ at least.
The 15mm- and the .43-rubber-inserts can be reloaded until you see/feel wear and tear. 
The .177 and .22 should not be reloaded more than 2 times. After this the polygon-rifling is allready gone. 
I only use them once.
I printed them with 6 walls, 70 bottoms (circular pattern) and 3 tops, no ironing and 45% trihexagonal infill.
LBRY Tags: 3d2a; stience; printing
 
                     
                    
                     
                Print Settings Reference REV A
 
                     
                Yah3D Mini Chemlight Magazine
 
                     
                USK Paragon Remix REMIXED
 
                     
                 
                            
                         
                            
                         
                            
                        