Your shooting 200 rounds a week. Sounds like you would need a new barrel every 10 weeks. Some guns just won't shoot. Beating them to death won't make them better. Both of my varmint hunting rifles shoot under .5" with just about any load and a bad es. Kreiger barrels. Shooting competitive groups cost a lot of money for the best equipment.
Chronograph? Why do I need one?
- Thread starter Thor357
- Start date
If nothing else to get known speed for ballistic app for scope dope for distance shooting
The crony will let you know your average FPS, which is nice to know, just to know what your load is doing.
And it is a necessary tool to help you take that FPS and other factors of your load and scope settings and work out a data sheet, for scope adjustment for dialing your shots to a ranged distance.
Those two factors alone, are my main reason for have one.
And it is a necessary tool to help you take that FPS and other factors of your load and scope settings and work out a data sheet, for scope adjustment for dialing your shots to a ranged distance.
Those two factors alone, are my main reason for have one.
Agreed. I have also never encountered a case where standard deviation is greater than extreme spread.
Hmmm...
My barrel is a 22" bull barrel.
I did an experiment with this chrono before deciding to keep it or return it.
I shot 2 groups of 5 shots each.
First 10 was without the chrono attached.
Second 10 were with chrono attached.
I saw no difference, either visually or by measurement.
Ah yes, you made an excellent point!
I did indeed notice, through the chronograph, the target and primer, that I had some issues with 3 different loads I had made. If I didn't have the chrono I probably would have kept shooting them but I stopped mainly because the velocity was showing over 200 fps more than all the others I had already shot which were around 2650-2750 fps. So thank you for your help, I now see a helpful use of a chrono I hadn't considered.
Also, I have segregated my brass by brand but not by lot # nor the number of times the brass has been reloaded though I do have them designated to just the one rifle. I don't have a die set that allows me to set neck tension.
I think this next reload session I will measure the volumes of each case and separate them into their respective groups and see how that works.
Thanks again!
I've seen a couple guys at the range using devices which hold the Magnetospeed off the barrel, seems like an elegant solution to the Magnetospeed-as-a-Tuner problemIt'd be more magical if accuracy wouldn't change after removing a weight from the end of the barrel.-Al
.When I used a Magnetospeed on my barrel the darned thing shot smaller groups, that pissed me off
.The statement I made is not the way it came across to you. Sorry for the way I posted it.
I had high STD DEV's on some rounds with corresponding ES' which in some cases resulted in stellar groups!
And just the opposite, excellent STD's and ES' with lousy groups.
With that stated, in a reply to another commentary, I realized and stated that there is more that I can do during case prep that I should apply.
What the real issue is (was) that after spending close to $500 for this chrono, was I getting my money's worth out of it. With you and others I have decided that in the end I think it was money well spent.
yes, it was a very calm day.
I used strips of paper towels pinned to dowels 10 feet in front the targets and at the targets.
It's what I had available at the time.
Last edited:
I've seen that as well but after conducting my test as I had stated in another reply, it appears to not be necessary for me to do that so I won't.I've seen a couple guys at the range using devices which hold the Magnetospeed off the barrel, seems like an elegant solution to the Magnetospeed-as-a-Tuner problem
When I used a Magnetospeed on my barrel the darned thing shot smaller groups, that pissed me off
CharlieNC
Gold $$ Contributor
Search "positive compensation" to find out why target precision vs velocity variability is not a direct correlation.
I have yet to use a ballistic trajectory app to determine what to set my scope to, I just hold over and walk my rounds into the target (anything over 400 yards).
Sometimes I can get on target in as little as 3 shots (helps to have a spotter), or it's taken me as many as 30 shots to get on target (no spotter)
Perhaps I should start using a ballistics app and start using the turrets as they are intended...perhaps.
Nah, if a barrel can wear out a in 2000 rounds then either that's a cheap barrel or max loads are being shot through it and not enough time is given to let it cool off. And/or cleaning methods and frequency are insufficient.
DLT
Silver $$ Contributor
That depends on the caliber.
There's a lot of drop at 1000 yards fire two bullets 9fps apart and fire two 50fps apart.which two will group tighter.this is main reason for using it and getting your loads up to snuff besides muzzle velocity for your dope
Check out one of Erik Cortina's videos on tuning. He states that ES is related to proper ignition, firing pin mechanism, primers, powder). Speedy Gonzales says that when he gets a new premium action he still gives it a thorough going over. He doesn't say how he inspects it.
Actually won't both potentially group tight...if you have your scope dialed in properly?
Upgrades & Donations
This Forum's expenses are primarily paid by member contributions. You can upgrade your Forum membership in seconds. Gold and Silver members get unlimited FREE classifieds for one year. Gold members can upload custom avatars.
Click Upgrade Membership Button ABOVE to get Gold or Silver Status.
You can also donate any amount, large or small, with the button below. Include your Forum Name in the PayPal Notes field.
To DONATE by CHECK, or make a recurring donation, CLICK HERE to learn how.
Click Upgrade Membership Button ABOVE to get Gold or Silver Status.
You can also donate any amount, large or small, with the button below. Include your Forum Name in the PayPal Notes field.
To DONATE by CHECK, or make a recurring donation, CLICK HERE to learn how.