AZAndy
Member
Finally got a chronometer and checked some handloads and reloads. Here's what I'm seeing:
.45 ACP plated 230 grain with 4.4 grains Titegroup, OAL 1.275", CCI 300 primers:
Low 634/ High 724/ Average 681 (fps) from 5" barrel
Book numbers show more like 800 fps for this powder weight (using lead bullet data).
.38 Special 158 grain LSWC with 4.25 grains Universal, OAL 1.475", CCI 500:
Low 650/ High 714/ Avg 672 from 1 7/8" barrel
Book shows more like 950 for this charge, but I'm sure they're using a longer barrel than I am.
9mm Makarov 93 grain lead RN with 3.65 grains Universal, OAL .972", CCI 500:
Low 733/ High 944/ Avg 829 from 3.75" barrel
Extrapolating from book numbers gives ~950 for this one.
I'm shooting at about 5500 feet altitude and it was in the mid-50s Fahrenheit. Since the air is less dense, I would expect velocities to be a bit higher, not lower, although I don't know what effect higher altitudes would have on the way powders burn.
These will work fine as plinking and practice rounds, and I'm okay with that, but I'd like to get a little closer to factory-load standards in all these calibers-- say around 850fps for .45 and .38 and 1000fps for the 9x18. I'll increase the powder weights a tad and try again-- but I'm confused as to why the velocities are so far off from what I expected, given the load data from Hodgdon.
I'd be grateful for any assessments or wild guesses anyone might have!
Thanks,
Andy
.45 ACP plated 230 grain with 4.4 grains Titegroup, OAL 1.275", CCI 300 primers:
Low 634/ High 724/ Average 681 (fps) from 5" barrel
Book numbers show more like 800 fps for this powder weight (using lead bullet data).
.38 Special 158 grain LSWC with 4.25 grains Universal, OAL 1.475", CCI 500:
Low 650/ High 714/ Avg 672 from 1 7/8" barrel
Book shows more like 950 for this charge, but I'm sure they're using a longer barrel than I am.
9mm Makarov 93 grain lead RN with 3.65 grains Universal, OAL .972", CCI 500:
Low 733/ High 944/ Avg 829 from 3.75" barrel
Extrapolating from book numbers gives ~950 for this one.
I'm shooting at about 5500 feet altitude and it was in the mid-50s Fahrenheit. Since the air is less dense, I would expect velocities to be a bit higher, not lower, although I don't know what effect higher altitudes would have on the way powders burn.
These will work fine as plinking and practice rounds, and I'm okay with that, but I'd like to get a little closer to factory-load standards in all these calibers-- say around 850fps for .45 and .38 and 1000fps for the 9x18. I'll increase the powder weights a tad and try again-- but I'm confused as to why the velocities are so far off from what I expected, given the load data from Hodgdon.
I'd be grateful for any assessments or wild guesses anyone might have!
Thanks,
Andy