50 at 200 - Page 80 - RimfireCentral.com Forums

Go Back   RimfireCentral.com Forums > >

Notices

Join Team RFC to remove these ads.
Reply
 
Thread Tools Display Modes
  #1186  
Old 06-30-2020, 06:20 AM
Penage Guy's Avatar
Penage Guy

Join Date: 
Dec 2013
Location: 
Ontario, Canada
Posts: 
4,410
TPC Rating: 
0% (0)


Log in to see fewer ads
Landy, on the Target Data image the Target Distance indicates 50. For clarification, should that be 200?

By the way, that image (or whatever the term is for one that changes) is a very good illustration of the changing results.
Reply With Quote
  #1187  
Old 06-30-2020, 07:43 AM
HuskerP7M8
NRA Member - Click Here To Join!

Join Date: 
Jul 2007
Location: 
Nebraska
Posts: 
867
TPC Rating: 
100% (3)
Quote:
Originally Posted by Penage Guy View Post
Landy, on the Target Data image the Target Distance indicates 50. For clarification, should that be 200?

By the way, that image (or whatever the term is for one that changes) is a very good illustration of the changing results.
Yup, good catch....disregard the angular measurements and look only at the raw statistical metrics under inches. Or, use a divisor of 4 for the angular measurements.
The image is a GIF.

Landy
Reply With Quote
  #1188  
Old 07-03-2020, 11:59 AM
jaia
NRA Member - Click Here To Join!

Join Date: 
Apr 2014
Posts: 
6,548
TPC Rating: 
100% (2)
Eley Semi-auto Benchrest Precision 40 grain 22lr, rated 1080 fps

Lot # 1219-02321

Why did I offer the lot number this time?
Very surprised by the chrony numbers from a midgrade cartridge.
ES of 29 fps for the first 50 shots, 25 fps for the second 50.
Had to check the numbers twice on the chrony...thought I was reading it wrong.

Daaaayyyyyyuuuummmmmmm!

That's better than my results with ammo costing much more per round.

CZ 455 Varmint, Lilja barrel, Sinclair bipod, 200 yards



Clear lubricant, no plating, looks like a new cast lead bullet just out of the mold.
Minimal visible defects, clean uniform crimp...good looking cartridges.



Freshly cleaned bore with the chamber scrubbed to clear the carbon ring,
and started out by sending 5 at the steel to fine tune the scope.
Then the remaining 45 on target. Vertical is tailwind and clean barrel.
As the barrel regained it's lubrication, trajectories tightened up.
I could see the bullets spinning into the backer in tighter and tighter paths.



The second 50 did extremely well, even with the tailwind.
Fully lubricated bore and a better feel for the wind changes on my end.



Really didn't expect this new cartridge to do this well.
I'd buy it again. It'd be some very decent hunting ammo.

Last edited by jaia; 07-03-2020 at 12:06 PM.
Reply With Quote
  #1189  
Old 07-03-2020, 12:13 PM
alum572's Avatar
alum572 is online now
NRA Member - Click Here To Join!

Join Date: 
Jul 2010
Location: 
MN
Posts: 
4,619
TPC Rating: 
100% (45)
Jaia- I appreciate what you've done here with showing consistency (or lack of) with.22 rimfire. Honestly. But I'd prefer groups of 50 shot at 100 yds. which is more practical for me. Just saying. As with all suggestions, feel free to ignore.
Reply With Quote
  #1190  
Old 07-03-2020, 12:22 PM
jaia
NRA Member - Click Here To Join!

Join Date: 
Apr 2014
Posts: 
6,548
TPC Rating: 
100% (2)
A, you know what to do, right? Apply the half-third rule.

Tailwind at 2 to 5 mph with this box of cartridges,
ya' get 5 inches at 200 yards, expect 1.7 inches at 100 yards,
0.57 inches at 50 yards and 0.19 at 25 yards, for a 50 shot group.
Can't offer much more information than that, right?

A dime is 0.705 inches in diameter.
0.57 plus 0.21 = 0.78 inches.
You could just about cover all 50 shots with the dime at 50 yards.
That's pretty decent for a 22lr, eh?

Last edited by jaia; 07-03-2020 at 12:26 PM.
Reply With Quote
  #1191  
Old 07-03-2020, 01:41 PM
alum572's Avatar
alum572 is online now
NRA Member - Click Here To Join!

Join Date: 
Jul 2010
Location: 
MN
Posts: 
4,619
TPC Rating: 
100% (45)
Thanks! But they promised me there'd be no math!
Reply With Quote
  #1192  
Old 07-04-2020, 08:53 AM
gcrank1's Avatar
gcrank1

Join Date: 
Apr 2018
Location: 
South Central WI, USA
Posts: 
4,067
TPC Rating: 
100% (3)
Im gonna havta be gettin me some o' that
Reply With Quote
  #1193  
Old 07-04-2020, 07:05 PM
W8LON

Join Date: 
Jul 2019
Location: 
Upper Peninsula
Posts: 
497
TPC Rating: 
0% (0)
Hmm only one box of that lot number left. Someone must be paying attention.
Reply With Quote
  #1194  
Old 07-11-2020, 02:25 PM
jaia
NRA Member - Click Here To Join!

Join Date: 
Apr 2014
Posts: 
6,548
TPC Rating: 
100% (2)
Eley Semi-auto Benchrest Outlaw 40 grain 22lr, rated 1090 fps

CZ 455 Lilja, Sinclair Bipod, 200 yards

Shooting at noon, westerly wind from over my left shoulder
at 4 to 7 mph, with a decent amount of shimmer and steam visible in the air.
Last nights rain made it fun wading though the floating fire ants to hang the targets.



Visual inspection shows the cartridges aren't quite as good as the last Eley product tried.
A bit more lube in odd spots and not as clean a crimp...still, not horrible.
At 45 bucks a brick I can deal with it.



43 fps ES and very decent results from the first 50, considering the tailwind.



34 fps ES from the second 50, again, not bad at $4.50 a box.



That was surprisingly good for a middle/low end 22lr cartridge.
200 yards and 5 inches of spread for 50 shots
100 yards expect 1.7 inches, at 50 yards gonna get 0.57 inches.
Again, a decent box of ammo for a decent price.
No fail to fires either, how about that?

Last edited by jaia; 07-11-2020 at 02:42 PM.
Reply With Quote
  #1195  
Old 07-12-2020, 07:05 AM
thesandman
US Army NRA Member - Click Here To Join!

Join Date: 
Oct 2013
Posts: 
1,166
TPC Rating: 
100% (3)
I recently went to Lapua in Marengo Ohio to test ammo. Getting alot of vertical from new ammo I checked velocity, es and sd. Problem is I don't know what is good for upper end ammo, so here I am asking the guru, what is good sd and es? Thanks Brother Jaia.
Reply With Quote
  #1196  
Old 07-12-2020, 07:18 AM
jaia
NRA Member - Click Here To Join!

Join Date: 
Apr 2014
Posts: 
6,548
TPC Rating: 
100% (2)
I have no use for standard deviation.
All I care about is extreme spread
All SD tells you is what to expect from 2 out of 3 shots fired.
SD does not win competitions, ES is what loses a competition.
My preference is the smallest ES you can find.
An ES of 40 fps seems to be the cut off point between true match ammo
and the next grade down. The majority of better 22lr I've tested
had an ES in the 30 to 40 fps range for 50 shots.
The best was from a box of Midas+ with an ES of 19 fps.
With a 40 grain 22 lr, 10 fps difference between two shots
results in about 7/100ths of an inch vertical spread at 50 yards.
So 40 fps causes about 1/4 inch of vertical at 50 yards.
That's half moa just due to mv differences.
When you find a batch with the ES less than 30, buy all of it.
It doesn't show up very often.

Last edited by jaia; 07-12-2020 at 07:35 AM.
Reply With Quote
  #1197  
Old 07-12-2020, 08:41 AM
thesandman
US Army NRA Member - Click Here To Join!

Join Date: 
Oct 2013
Posts: 
1,166
TPC Rating: 
100% (3)
Thanks Brother; I thought there was alot of vertical for Midas+.
Reply With Quote
  #1198  
Old 07-12-2020, 08:44 AM
Al the Infidel's Avatar
Al the Infidel
US Marines Disabled American Veteran NRA Member - Click Here To Join!

Join Date: 
Jan 2007
Location: 
Yoopersville, MI
Posts: 
1,014,056
TPC Rating: 
0% (0)
Quote:
Originally Posted by jaia View Post
Eley Semi-auto Benchrest Precision 40 grain 22lr, rated 1080 fps
CZ 455 Varmint, Lilja barrel, Sinclair bipod, 200 yards

What? No 2x4s?? What kind of haphazard testing is this?
__________________
Wash your hands, wear a mask indoors, and use your brain, please. Grandma and grandpa thank you.
Reply With Quote
  #1199  
Old 07-12-2020, 08:56 AM
jaia
NRA Member - Click Here To Join!

Join Date: 
Apr 2014
Posts: 
6,548
TPC Rating: 
100% (2)
Ummmmmm... I didn't want to admit this....but that 455 Varmint... it's also a Fuglie.

Just not an ugly Fuglie. But it is technically a Firearm Utilizing Glued Linear Integral Embedding.

Receiver is pillared and bedded, and the barrel is epoxy bedded into the barrel channel.
No stock flex, no recoil bounce, minimal barrel harmonics. Works well with the Sinclair bipod.


Last edited by jaia; 07-12-2020 at 09:09 AM.
Reply With Quote
  #1200  
Old 07-12-2020, 05:36 PM
KeisiMekaigo

Join Date: 
Nov 2018
Posts: 
81
TPC Rating: 
0% (0)
Quote:
Originally Posted by jaia View Post
I have no use for standard deviation.
All I care about is extreme spread
All SD tells you is what to expect from 2 out of 3 shots fired.
SD does not win competitions, ES is what loses a competition.
My preference is the smallest ES you can find.
If Im not wrong, jaia, in this image I just draw, left group has higher ES but lower SD, and right group has lower ES and higher SD. Is then a better group the one in the right?
I think both parameters give us diferent information about the ammo, and both needed.
Attached Images
File Type: jpg ES vs DS.jpg (7.5 KB, 267 views)

Last edited by KeisiMekaigo; 07-12-2020 at 05:46 PM.
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off




All times are GMT -5. The time now is 02:05 PM.

Privacy Policy

DMCA Notice

Powered by vBulletin
Copyright ©2000 - 2020, Jelsoft Enterprises Ltd.
Search Engine Optimisation provided by DragonByte SEO (Lite) - vBulletin Mods & Addons Copyright © 2020 DragonByte Technologies Ltd.
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2020 DragonByte Technologies Ltd.
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2020 DragonByte Technologies Ltd.
Copyright 2000-2018 RimfireCentral.com
x