45 ACP low speed problems

[Misskimo]

Berrys 230 + 5.7 gr of unique = an average speed. 180fps.
Cant understand it.
10 shots
chrony works great with my 9 mm. 1300fps
could a bullet come out that slow?
Chrony at 8 feet. Cloud screen on. Just plain confused

[jrayborn]

something isn't reading properly with your chrony...

[dubber123]

Back up from your chrony and try again. I think you will find around 850 fps then.

[wordsmith]

For reference, 6.0 gr Unique with 230 Gold Dots gives 819 fps out of my 4.5 inch barrel. 850 fps would be about right for a 5 inch.

[country gent]

Always "check the chronys set up with a known load / firearm combination when set up and if you start getting these types of readings. I use an rws pellet gun ( side cocker) with dedicated lot number of pellets to check set up. Your chrony didnt get swithched into metric readings by accident did it?

[TheDoctor]

If an auto, does the gun cycle? At 150 fps, you should be able to SEE the boolit.

[RobS]

Chrono isn't reading right or you have an issue with ignition (primer and/or primer). Sometimes a chrono graph doesn't read right on sunny days and if you are shooting too close. Shoot at least 8-10 feet behind the chronograph and confirm that the primers/powder are ok i.e. you have used them in other reloads with good results. By the way if you did have 150 fps the brass wouldn't likely cycle and eject.

[str8wal]

I highly doubt the gun would run at that speed.

[scattershot]

Something's wrong with your chronograph. Even if it were set to metric units, 180 meters/second is only 590 fps.

[Misskimo]

Yeh. Thanks for determan factor of it being the chrony
it kicks like a good load
cant see bullet
hits normal

ill get my bb gun out

[Misskimo]

Again. 9mm shows great speed consistancys
45 dont. All show around 150fps
i will take a load apart and check right powder was used

[Misskimo]

Powders right. Lost. Unless theres a crack somewhere or the chroy just dont like my 45

[dubber123]

Powders right. Lost. Unless theres a crack somewhere or the chroy just dont like my 45

Did you try backing up from your chrongraph? I have a short 50-70 pistol that won't read at all, or give screwy readings until I m about 20 feet out. There is no way 5.7 grains of Unique and a 230 is making 150 fps.

[Misskimo]

Okay. Ill try that