I just got back from finally doing some Chrony testing of a few various pistol calibers and as I promised a few folks here, I wanted to share my findings.
I've wanted to do this for a while and haven't had time to sit down and do any real testing, and while it is no big surprise that a longer barrel will net an increase in velocity, I thought some of you would be interested in seeing exactly how much.
I specifically tested 9mm, 38 Special, and .357 Magnum. All ammo used between calibers were from the same box/lot of ammo so as to not skew the data.
Ammo used was:
9mm Wolf 115 gr ammo
38 Special 158 gr Remington UMC
357 Magnum 158 gr BLAZER ammo
First off:
-----------------------------------------
Beretta 92 Centurion.
4.3 inch barrel
Wolf 115 gr ammo.
1163 fps
1125 fps
1092 fps
1155 fps
Average = 1133 fps
----------------------------------------
Century UC-9 (uzi)
16 inch Barrel
Wolf 115 gr ammo
1373 fps
1357 fps
1332 fps
1326 fps
Average = 1347 fps
214 fps velocity increase using the carbine over the handgun
---------------------------------------------
Taurus Model 66 .357
6 inch barrel
38 Special 158 gr Remington UMC
1021 fps
1008 fps
1015 fps
1034 fps
Average = 1019 fps
--------------------------------------------
Same handgun, but with .357 magnum 158 gr BLAZER ammo
1008 fps
927 fps
964 fps
974 fps
986 fps
Average = 971 fps
*The BLAZER ammo is anemic and loaded with slower burning powder and thus the velocity decrease, but I use the same ammo in the carbine to see the real difference in changing barrel length
-------------------------------------------
NEF Pardner .357/38 barrel cut to 16 inches
158 gr Remington UMC 38 Special ammo
1250 fps
1202 fps
1236 fps
1235 fps
Average = 1230 fps
*211 fps velocity increase over the 6 inch barrel handgun
------------------------------------------------------------
NEF Pardner .357/38 barrel cut to 16 inches
357 magnum BLAZER 158 gr ammo
1231 fps
1225 fps
1208 fps
1223 fps
Average fps = 1221
* 250 fps increase in velocity over the 6 inch barrel handgun
I've wanted to do this for a while and haven't had time to sit down and do any real testing, and while it is no big surprise that a longer barrel will net an increase in velocity, I thought some of you would be interested in seeing exactly how much.
I specifically tested 9mm, 38 Special, and .357 Magnum. All ammo used between calibers were from the same box/lot of ammo so as to not skew the data.
Ammo used was:
9mm Wolf 115 gr ammo
38 Special 158 gr Remington UMC
357 Magnum 158 gr BLAZER ammo
First off:
-----------------------------------------
Beretta 92 Centurion.
4.3 inch barrel
Wolf 115 gr ammo.
1163 fps
1125 fps
1092 fps
1155 fps
Average = 1133 fps
----------------------------------------
Century UC-9 (uzi)
16 inch Barrel
Wolf 115 gr ammo
1373 fps
1357 fps
1332 fps
1326 fps
Average = 1347 fps
214 fps velocity increase using the carbine over the handgun
---------------------------------------------
Taurus Model 66 .357
6 inch barrel
38 Special 158 gr Remington UMC
1021 fps
1008 fps
1015 fps
1034 fps
Average = 1019 fps
--------------------------------------------
Same handgun, but with .357 magnum 158 gr BLAZER ammo
1008 fps
927 fps
964 fps
974 fps
986 fps
Average = 971 fps
*The BLAZER ammo is anemic and loaded with slower burning powder and thus the velocity decrease, but I use the same ammo in the carbine to see the real difference in changing barrel length
-------------------------------------------
NEF Pardner .357/38 barrel cut to 16 inches
158 gr Remington UMC 38 Special ammo
1250 fps
1202 fps
1236 fps
1235 fps
Average = 1230 fps
*211 fps velocity increase over the 6 inch barrel handgun
------------------------------------------------------------
NEF Pardner .357/38 barrel cut to 16 inches
357 magnum BLAZER 158 gr ammo
1231 fps
1225 fps
1208 fps
1223 fps
Average fps = 1221
* 250 fps increase in velocity over the 6 inch barrel handgun