Re: Chronograph-Which one?
Posted:
Mon Dec 04, 2017 11:13 pm
by plant_one
one thing i will warn you - with the magnetospeed - is that it MAY interfere with your barrels harmonics and cause POI shift. Some folks say that its a real problem, others done have much issue with it effecting things.
barrel profile likely has somethign to play with this (bull barrels being stiffer and therefore less effected than a pencil barrel).
ive had mixed results, however most of my guns show little to no noticeable accuracy differences though.
Re: Chronograph-Which one?
Posted:
Tue Dec 05, 2017 5:15 am
by Al in Mi
CF, you have one of these or seen one ??
looks like it would take care of sun glint and other light issues.
Re: Chronograph-Which one?
Posted:
Tue Dec 05, 2017 9:23 am
by jgilesg
I have one of them and had a few problems with it.
The first one i got was reading incorrectly. Numbers were way off and it was giving a reading when a round was shot just outside of it with the chronograph anywhere from 1 foot to even 10 feet from the barrel. Not sure if that means it was the muzzle break doing it or sound wave. I called Caldwell and they told me this happens occasionally but they couldn’t tell me why. They sent me a new one and it works good.
Second, the tripod that comes with it is really light weight. I bought a better one and that fixed that issue.
Third, with the upside down design is a bit top heavy and wobbly.
This is my first chronograph so not sure if these issues are somewhat common or not
JG
Re: Chronograph-Which one?
Posted:
Tue Dec 05, 2017 9:46 pm
by Texas Sheepdawg
plant_one wrote:one thing i will warn you - with the magnetospeed - is that it MAY interfere with your barrels harmonics and cause POI shift. Some folks say that its a real problem, others done have much issue with it effecting things.
barrel profile likely has somethign to play with this (bull barrels being stiffer and therefore less effected than a pencil barrel).
ive had mixed results, however most of my guns show little to no noticeable accuracy differences though.
That’s why I won’t buy one
Re: Chronograph-Which one?
Posted:
Wed Dec 06, 2017 6:07 am
by Hoot
Texas Sheepdawg wrote:plant_one wrote:one thing i will warn you - with the magnetospeed - is that it MAY interfere with your barrels harmonics and cause POI shift. Some folks say that its a real problem, others done have much issue with it effecting things.
barrel profile likely has somethign to play with this (bull barrels being stiffer and therefore less effected than a pencil barrel).
ive had mixed results, however most of my guns show little to no noticeable accuracy differences though.
That’s why I won’t buy one
Ditto.
WRT errors due to muzzle proximity to the chrony. That's not unheard of It picks up the ejecta from the burned powder. I have gotten used to setting mine up as far as the remote display cable will reach. I made mine from CAT5 Ethernet patch cable to allow it to be somewhere in the vicinity of 15 feet from my muzzle. Most of the bottleneck calibers I shoot don't need that much separation but the 450b does.
Hoot
Re: Chronograph-Which one?
Posted:
Wed Dec 06, 2017 5:05 pm
by Jim in Houston