sweet. bloody nice scope too btw :)Quote:
Originally Posted by Tikka7mm08
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sweet. bloody nice scope too btw :)Quote:
Originally Posted by Tikka7mm08
Is that with 140 grains?Quote:
Originally Posted by Tikka7mm08
Easily addressed ;)Quote:
Originally Posted by Tikka7mm08
Thanks to @AlonzoQuote:
Originally Posted by Gibo
142gn LRABs.Quote:
Originally Posted by Danny
My ears ringing with earmuffs on...but hard bolt lift at 67gn so will play with 66.5gn. Groups not great though.
Mine sits in the same place if not a tad closer.Quote:
Originally Posted by Tikka7mm08
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Yeah sorry about shooting your one mate[emoji13]Quote:
Originally Posted by R93
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Better muffs, earplugs as well, different brake, suppressor, a few options there :thumbsup:Quote:
Originally Posted by Tikka7mm08
Wow...140gn ABs over 67.5gn 2217.
http://images.tapatalk-cdn.com/16/01...cb4d4c4730.jpg
http://images.tapatalk-cdn.com/16/01...fc6c111247.jpg
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Is that why it only reads pedestrian .243 speeds now?Quote:
Originally Posted by BRADS
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As we speak my 243 is getting turned into a fire breathing deer slaying machine[emoji13]Quote:
Originally Posted by R93
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I am surprised you used those words in a sentence regarding a .243😆Quote:
Originally Posted by BRADS
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Keeping it as it is then?Quote:
Originally Posted by BRADS
http://images.tapatalk-cdn.com/16/01...77f4bf5fd9.jpg
Seating depth (COAL) trial: 2.840" (touching), 2.835", 2.825", 2.815", 2.803". All 45.5gn RE17, CCI mag primer, Lapua brass.
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based on a 6.5 G case?Quote:
Originally Posted by BRADS
Start a new 243 thread fellas.
1000 yard drop table (NB based on claimed BC, will real world verify):
Bullet weight, grains: 142.0
Bullet speed, f/s: 3007.0
at temperature, °F: 64.0
Temperature coefficient, %: 1.388889
Ballistic coefficient (G1): 0.715
Zero Distance, yards: 100.0
Scope height, inches: 2.0
Vert. click, MOA: 0.25
Hor. click, MOA: 0.25
Altitude, feet: 328.0
Temperature, °F: 59.0
Pressure, inHg: 25.33
Wind speed, mph: 10.0
Wind direction, degrees: 90.0
Attachment 44698
Are those ft-lbf correct?
Based on Shooter my 308 (168) is at 970ft-lbs @ 600...bet I've done something wrong [emoji849][emoji849]
Attachment 44699
Very impressed regardless mate[emoji106] thanks for posting. I'm going to get a 260 soon.
Just what came out of Strelok+...?
Litz suggests .572 for the 142 LRAB .....
Definitely a hell of a difference between them at that and the Berger 30 cal @ snails pace.Quote:
Originally Posted by Kiwi Greg
Yep .628 G1 over 3000fps. Not sure if Strelok correct bc as velocity drops?
How are the LRAB grouping?
1" at 100yards in a gale...! Hoping to shoot some this arvo if the drizzle stops with the wind.
Got some promise then, no drizzle and not much wind at my place.
Bit of a breeze here but trying to clear. 1" would be marginal for 1000yards?
Possibly, once you have a load with promise at 100, then try 300. Some loads that group OK at 100 group even better at 300 plus. (ie 1" at 100 but 2" at 300) I can't ( and I don't think anyone else can) explain how that works but it does, sometimes.
Bryan Litz covers why in one of his books. I cannot remember the exact reasoning - it took several sentences to explain. A point he also makes is the other way around - a tight group at 100 yds doesn't guarantee that at the further distances the group size will be proportional to the 100yd group, particularly if the ES is high. So like you say essential to test further out. Also well known with boat tail projectiles being more stable once further out.Quote:
Originally Posted by stug
I always thought we just shoot better further out
As normally you are aiming at a smaller dot % wiseQuote:
Originally Posted by Fisherman
The equal of a 2.5 inch dot at 1000yrds is a 1/4 inch dot at 100yrds
Start using a 1/4 inch dot for a 100yrd aimpoint and see what happens to your groups with an accurate rifle
Aim small hit small
As the gun operator if you cannot shoot close up how can you shoot better further out? :)Quote:
Originally Posted by Fisherman
Wow what an interesting morning. Finally stopped drizzling and more importantly blowing. First up shot the 260AI with the seating depth test. Started with the extremes - 2.803" and 2.840"...the latter went into 0.4". The rest didn't show much variation.
In between sighted my 7mm08 with suppressor on. 120gn 3018fps. Looks about 0.25"...and has shot that before too.
I use to not bother with seating depth. But got caught out shifting from a Remington Sendero to HS Precision SPL. Both shot the same load into 0.5" but then on a hunt the HSP left the bullet stuck as an unfired round was ejected. Lesson 1: Seating depth is impt. Lesson 2: cycle each hunting round before goinf on a hunt.
Well pleased now as really concentrated today as I have not been happy at all with my shooting lately.
http://images.tapatalk-cdn.com/16/01...1846767acf.jpg
And my 2 beauties.
http://images.tapatalk-cdn.com/16/01...b717d26e96.jpg
I did full length size but noticed a couple of rounds tight to chamber? Length is fine. I notice when FL sizing there seems to be very little effort required compared to other cals....put this down to very close chamber and die??
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PS the reason for the big shift between the 1st and 2nd 7mm08 sighters is I was being generous with the adjustment and also forgot the Z6i is in cm not MOA. D'oh.
Thanks @mikee :)
Had a play with my Ackley and FF some cases with projectiles. I have not even tried it with this barrel before so was pleasantly surprised how well it went.
129 gr interlock hard into the lands shot pretty well at 2740ish. A lot of mirage today with the heat. So surprised they went as well considering my eyesight.
http://uploads.tapatalk-cdn.com/2016...861070490e.jpg
Not bad ES over 3 rounds. Jumped out to 23 over the 9 shots but I shot them faster than I would normally
http://uploads.tapatalk-cdn.com/2016...b37effe003.jpg
Didn't form a perfect shoulder so could probably up the load a bit.
http://uploads.tapatalk-cdn.com/2016...b6cf06f75f.jpg
Certainly good enough to hunt with.😆
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Geez...all this 260 Improved stuff has finally rattled me enough to get all my parts off to the gun plumber today :) Only been sitting on it for a year or so, but other guns have been absorbing my energy till now.
Keep up the progress reports, it may save me some work :thumbsup:
@R93 nice shooting, what powder & load did you use?
43 grns of 2209.
Pretty sure it can handle another grain at least as the shoulders only formed about the same as I can get without projectiles.
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