Did some testing over the last 2 weeks in between some other stuff i had going on, i was using various loads and some wet news print (not a massive believer in mediums as gospel but just for the hell of it) i used 1 car door and 1 wooden door to see how much theyd slow down the selection of rounds i was using, i have done this before years ago using guns i had at the time. Since then 3 years ago i got a .357sig thought it was time see how it went compared to some other cals, i dont have a .45 (never got into them) had too many problems with them so i stuck with other rounds through the car door i used 9mm FMJ (just cci blaser) 357sig FMJ 357sig Gold Dot 9mm XTP at 1300fps .40 UMC 180gn JHP .40 FMJ PMC 165gn What i found in this case was that all projectiles failed to get enough expansion to stay in the medium (measured 15" end to end) - all except for 2 which were the 357sig Gold Dots which stopped at 14" althought they didnt expand as per normal i was impressed they stopped where as all the other in that list passed through and through. In the case of the wooden door (solid wood measured 30mm in width) i used 9mm XTP at 1300fps 124gn 357sig FMJ 357sig Gold Dot 357magnum 125gn Federal JHP 357magnum 145gn Silvertip .40 FMJ 165gn PMC .40 180gn JHP WWB Once again speed won, the 357mag stayed inside and still managed to expand out to about the 14" mark, i recovered 1 357sig Gold Dot (the other passed through) as for all the others once again they punched through and through. I was 15 yards from each when i fired. Heres the pics the 9mm 124gn Gold Dots i didnt include in either of these tests i just loaded them up to 1300fps to see how theyd perform. The first 2 fired went through the car door where as the 3rd went through the wooden door, the last went straight into the newsprint.