I'm still learning the 10mm ropes. I normally shoot 165gr or so target ammo, outta my .40 guns (like my G22 or P99). If I shoot 165gr target ammo outta my G20, do both rounds have about the same properties (energy,etc)? I mean I know that the .40 is pretty much a weak 10mm round. And thanks for all the answers to my last question. Got a lot of good info about Double Tap and especially Georgia Arms. Their stuff is a bit cheaper than even the cheapest target ammo (Blazer aluminum 200gr) around here. It's about .53 around with tax included for the cheap stuff in my part of Iowa. And with shipping included the middle of the road 165/180gr GA stuff is about .44 a round. It adds up after a while. Now I gotta get shooting with it and save the brass for when I wanna start reloading. Just gotta wanna spend the moola on reloading equipment. I'll have my first range report when I get to shoot the G20 for the first time. Thanks! Wanna kill these ads? We can help!