According to Cartridges of The World a factory load 38 Special 150 LRN bullet at 890 fps has an energy value of 270 ME.
A 22 LR Stinger 32 grain HP at 1640 fps has an energy value of 191 ME. Similar?? Not unless you've failed math IMHO.
Unless the laws of physics are especially different for the GTA, the above figures speak for themselves.
Typical .38spl factory loads:
130gr JHP @ 800-890fps (185-229 ft-lb energy)
158gr SWC @ 755 fps (200 ft-lb)
.22 LR:
32gr stinger @ 1640 fps - 191 ft-lb
30gr aguila @ 1750 fps - 204 ft-lb
So yes, similar. Oh, and since you brought it up, i actually happen to have an honours degree in mathematics.
What does any of this have to do with the original question again?
I did read another article comparing hardcast and the XTP’s and it stated that the hardcast will usually pass right through without doing much damage. So I opted for the XTP’s and picked them up at Wholesale today along with some blue dot.
You should really consider using 800x. This powder is proven to produce the highest velocities at lowest pressures in 10mm.
The only downside of 800x is that each charge must be weighted, as it's incredibly inconsistent in powder measures.
Check out the stickies on this forum - lots of info.
http://www.glocktalk.com/forums/forumdisplay.php?f=67


















































