Search found 45 matches

by wsftr
Thu Aug 09, 2018 4:57 am
Forum: Equipment & Technical
Topic: When does BC Adavtage , become a disadvantage?
Replies: 6
Views: 399

Re: When does BC Adavtage , become a disadvantage?

If you look at FTR there are some examples as to how a combination of recoil is most likely contributing to being a disadvantage. Typically this is with 215s and up. Most settle on 185 and 200s as that is a practical limit where a measurable disadvantage (precision) is found. Typically heavy for wei...
by wsftr
Wed Jul 18, 2018 7:40 pm
Forum: Equipment & Technical
Topic: Successful 6mm for long range
Replies: 15
Views: 1260

Re: Successful 6mm for long range

One point to consider for the little 6s in F-class and manual marking. Its harder to find the bullet hole and to detect the shot. IME in windy, changeable conditions it can lead to marking delays and often calls to the butts to examine for impact. Not because the shot is out but its just harder for ...
by wsftr
Thu Jun 28, 2018 7:54 pm
Forum: Equipment & Technical
Topic: Successful 6mm for long range
Replies: 15
Views: 1260

Re: Successful 6mm for long range

IMO and IME the 6s punch above their weight but they are still a middle weight trying to knock out in the heavy weight division...not impossible but not good odds either.... 6s can be pushed hard and still have good life and hold good vertical, plenty have run the 6BR with a 105 in the 2950+ range. ...
by wsftr
Mon Jun 18, 2018 8:25 pm
Forum: Equipment & Technical
Topic: More on Barrel Tuners
Replies: 147
Views: 7442

Re: More on Barrel Tuners

mmm - its interesting because its loooong been stated that ES doesn't matter SR BR. I assume thats why tuners are a mixed bag in SR BR as really they are a mechanism for tuning on the day which can be achieved other ways. Are high and low powder charges the powder method of positive compensation? - ...
by wsftr
Sat Jun 09, 2018 11:14 am
Forum: Equipment & Technical
Topic: Barrel Behaviour Theory
Replies: 79
Views: 4043

Re: Barrel Behaviour Theory

All, I don't have the experience of others on this site in tuning a rifle but I have spent a bit of time digging into the physics to understand what is going on so that I can learn to tune a rifle faster. I welcome all contributions and discussions. Hi Peter - thank you for your work. I wonder - do...
by wsftr
Wed Jun 06, 2018 5:55 pm
Forum: Equipment & Technical
Topic: Barrel Behaviour Theory
Replies: 79
Views: 4043

Re: Barrel Behaviour Theory

ok - I miss-understood your post, but thanks for the pic. i was thinking there might be something that showed how wide the tune was or something like that, which could in turn be related back to the theories presented.
Anyways I won't get this off topic.
by wsftr
Wed Jun 06, 2018 3:43 pm
Forum: Equipment & Technical
Topic: Barrel Behaviour Theory
Replies: 79
Views: 4043

Re: Barrel Behaviour Theory

It’s funny how you say the last 6” of the muzzle as this is where I’ve shoved the pink cricket handle grip rubber on my bart .284 ( smithed by Fairbarn) . And also where I say secondary orings should be placed . I would love to spill the beans on how to tune the barrel with orings . But again I’m s...
by wsftr
Mon Jun 04, 2018 7:16 am
Forum: Equipment & Technical
Topic: More on Barrel Tuners
Replies: 147
Views: 7442

Re: More on Barrel Tuners

Thanks Williada - great posts and you definitely have my brain ticking over (thanks for the time) - always something to ponder. I have been up to my load dev range this morning to re measure :).
by wsftr
Sun Jun 03, 2018 4:54 pm
Forum: Equipment & Technical
Topic: More on Barrel Tuners
Replies: 147
Views: 7442

Re: More on Barrel Tuners

I thought I would repost Bryans response to positive compensation theory too - it would appear he accepts it. Note that this 'compensating' effect between MV and barrel harmonics is a known and accepted mechanism for groups to have less vertical at long range than their MV variation would suggest. I...
by wsftr
Sun Jun 03, 2018 2:48 pm
Forum: Equipment & Technical
Topic: More on Barrel Tuners
Replies: 147
Views: 7442

Re: More on Barrel Tuners

Williada - thank you for the response (always great responses :) )- yes have read all of B Litz books and T Boyers - pretty much anything I can get my hands on to be honest. Sometimes the same concept gets described different ways. I have to admit after watching the youtube and reading Bryans book/s...
by wsftr
Sat Jun 02, 2018 3:30 pm
Forum: Equipment & Technical
Topic: KEEP ME IN TUNE
Replies: 10
Views: 1011

Re: KEEP ME IN TUNE

Thanks for the response :)
by wsftr
Sat Jun 02, 2018 1:58 pm
Forum: Equipment & Technical
Topic: KEEP ME IN TUNE
Replies: 10
Views: 1011

Re: KEEP ME IN TUNE

I don't have a bore scope so I reason to err on the side of over cleaning just to hopefully be sure stay of staying ahead of the build up. Plus I make damn sure to get somebody with a bore scope to have an occasional look inside just to monitor the cleaning regime I'm using. Without a bore scope I'...
by wsftr
Sat Jun 02, 2018 11:12 am
Forum: Equipment & Technical
Topic: Stock Rigidity
Replies: 62
Views: 5285

Re: Stock Rigidity

How does the front rest affect vertical? 'Tis all the same or similar dynamics at work i suggest i.e. inconsistent system movement during the bullets barrel time. I can put forward thoughts on FTR front rest dynamics as that's what I'm most familiar with. Now I'm F Open and wish Rod D was at my clu...
by wsftr
Sat Jun 02, 2018 8:45 am
Forum: Equipment & Technical
Topic: More on Barrel Tuners
Replies: 147
Views: 7442

Re: More on Barrel Tuners

what is coning and how does it matter? Is it just me or do those groups look like there is virtually no "width" from one setting to another? i.e. how sensitive to any one change (change could be environmental or a component tolerance) is it? How did the rubber hit the road - i.e. what was ...
by wsftr
Wed May 30, 2018 7:07 pm
Forum: Equipment & Technical
Topic: Stock Rigidity
Replies: 62
Views: 5285

Re: Stock Rigidity

How does the front rest affect vertical?

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