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Lousy BCthere's always golf...
Thanks Jim.Good post and link Homerange. I have a heck of a time with recoil management myself and need to work on that nearly as much as my wind calling. Not sure how to do that using a bunny bag on the rear to fine tune the elevation though. Any suggestions appreciated. I also need to re evaluate the game of golf
After seeing this ,i'm going to sell all my guns and take up gooooooolfing...lol![]()
You better get some good prices for what you sell or have a LOT of guns. She looks expensive and unpredictable.
In the end, you will be heartbroken either way.
Lousy BC
It is a 7 twist, .223 Rem Match chamber with a .090 fb and .254nk with .2245 throat. It was about 50 degrees when I ran this test. Not sure what the velocity is, batteries died on my chrono but it is a 30" barrel. I don't think stabilization is the problem, I have consistency issues with my 6 Dasher, 308 and 6.5 Creed (b4 it became a dasher).What it the twist rate on your Criterion barrel, and velocity of your load? Are you teetering on the edge of stability? Only able to get tight groups in hotter weather or higher altitudes?
http://www.bergerbullets.com/twist-rate-calculator/
I had one load for my 9 twist 223 that'd shoot tiny groups but only when temps were over 100 in my area. Not very practical.
Here is my most recent load development with a 30" Criterion 223 barrel on a Tikka T3 with 1lb trigger. Rear squeeze bag and Atlas Bipod. Lapua Brass, CCI 400, Berger 80 VLD, Varget. .223 Rem Match chamber with a .090 fb and .254nk with .2245 throat
Raw Targets: https://imgur.com/a/HOAnIOM
Range Buddy Targets: https://imgur.com/a/3MrvwXe
The problem is that I am not usually consistent in my group sizes with the same load. I have a Joypod on order from Brunos but it seems like every month that goes by, a month gets added to the expected availability date. Not sure how much a Joypod would help though since I am not consistent with my 6 Dasher shot off a Seb Mini.
What are some things I can take away from these groups knowing that I am not very consistent? Or do I give up trying on my own and trick a FTR shooter into being my friend?
It seems like the 120 jump is bad all around. Group size on the 40 and 80 jumps at 24.6 seem good but again, inconsistency means this may just be luck. 25 is also good on the 40/80 if you remove the outlier but I'm not a huge fan of just removing shots you don't like. Jam 10 POI on 23.8 and 24.2 are close but the groups seem erratic. Jump 40 POI on 24.6 and 25 are also close, same for 23.8 and 24.2. The POI differences seem too small to really be sure it is harmonics in powder charge and not just a bad shooter having inconsistent cheek pressure or imperfect parallax.
If the internet didn't exist I would end up rechecking Jam 5, Jump 40, and Jump 80 (24.6 and 25 only).
I do not have velocity data, the batteries were dead on the chronograph but I thought the consensus from BR and F Class shooters was the target tells the truth, not the SD/ES.My first question would be what is the extreme spread and standard deviation on your load?
Target tells the truth but I wont even go to the target in load testing without muzzle velocity and SD. Different strokes fot different folks. Saves me lots of time and ammo.I do not have velocity data, the batteries were dead on the chronograph but I thought the consensus from BR and F Class shooters was the target tells the truth, not the SD/ES.
Well GentsYou better get some good prices for what you sell or have a LOT of guns. She looks expensive and unpredictable.
In the end, you will be heartbroken either way.