Search found 24 matches

by Audax
Tue Sep 04, 2018 11:37 am
Forum: Equipment & Technical
Topic: 7mm SAUM Rechamber/Barrel Life
Replies: 83
Views: 5998

Re: 7mm SAUM Rechamber/Barrel Life

Looks more like rust pitting to me, particularly noticeable in A-3 & A-5. Pitting will do the same as fire-cracking in respect of copper fouling. The muzzle end has quite a different look. Water base solvents may be good for the environment, but I suspect they may leave amorphous residues in you...
by Audax
Sat Sep 01, 2018 5:41 pm
Forum: Equipment & Technical
Topic: SAUM fired case capacity
Replies: 2
Views: 397

Re: SAUM fired case capacity

72.60gr water trimmed to 2.020". Do not trust data for ADI AR2213 in QL. Unless you have the data for ADI AR2213sc use another powder...!
by Audax
Sun Aug 12, 2018 5:50 am
Forum: Equipment & Technical
Topic: The effect of too much twist and speed
Replies: 6
Views: 928

Re: The effect of too much twist and speed

Walker Flatline will be OK if you are not shooting under ICFRA rules ICFRA rule F2.20. Ammunition may be commercial or handloaded but loaded in a manner consistent with the ammunition industry’s accepted standards; must be safe to fire in the rifle for which it is intended and must meet in all respe...
by Audax
Sat May 26, 2018 1:56 pm
Forum: Equipment & Technical
Topic: More on Barrel Tuners
Replies: 147
Views: 10297

Re: More on Barrel Tuners

I am glad that one got the cut...wonder how many more were in the box...?
https://www.ganderoutdoors.com/product/ ... &from=grid
by Audax
Sat May 19, 2018 5:43 am
Forum: Equipment & Technical
Topic: More on Barrel Tuners
Replies: 147
Views: 10297

Re: More on Barrel Tuners

Don't be confused by the air in the tip of the projectile shown.....they are all hollow. This one shown however has uneven lead, more one side than the other creating an out-of-balance issue, and potentially a flyer. The weight was not outside the range of any other in the box.....weighing will not ...
by Audax
Fri May 18, 2018 3:53 pm
Forum: Equipment & Technical
Topic: More on Barrel Tuners
Replies: 147
Views: 10297

Re: More on Barrel Tuners

:roll:
Bullet sectioned.jpg
Ya reckon a barrel tuner would fix this......a good quality expensive unit.....we will never know if it was a flyer.....
by Audax
Sat Mar 10, 2018 8:37 am
Forum: Helping F-Class to Grow
Topic: PRS IS COMING , WE HAVE TO EVOLVE !
Replies: 112
Views: 12800

Re: PRS IS COMING , WE HAVE TO EVOLVE !

There are many out there that also have muzzle breaks on their rifles...that would solve the dust and debris problem.....!
by Audax
Tue Feb 20, 2018 5:31 am
Forum: Equipment & Technical
Topic: Sierra 183gn
Replies: 2
Views: 820

Re: Sierra 183gn

Yes Albert and Williada...the SMK 183gr are the smallest of any. I had some that would not shoot well in some barrels and suspect the diameter was the cause being 0.2839". Sierra when queried responded that size is at the bottom end of their manufacturing tolerance range so it is surprising sma...
by Audax
Wed Nov 01, 2017 6:00 am
Forum: Equipment & Technical
Topic: RSAUM with Energy restrictions
Replies: 32
Views: 3394

Re: RSAUM with Energy restrictions

Check other websites for Trentham conditions, but there is also some good data here....http://www.wmac.org.nz/trenthamweather/
by Audax
Tue Oct 31, 2017 8:08 am
Forum: Equipment & Technical
Topic: RSAUM with Energy restrictions
Replies: 32
Views: 3394

Re: RSAUM with Energy restrictions

Been there done that with the 183gr in both 284W and SAUM....the energy limit for 183gr is 2857fps,vs 180gr of 2882fps, a much wider window in the latter for any ES error. You might want to seriously consider those lighter bullets to widen that window. Your tolerance over the limit is 1 shot in 20 a...
by Audax
Mon Oct 23, 2017 7:34 am
Forum: Equipment & Technical
Topic: 21st Century - Calibrated Bullet Seating Die vs. Others
Replies: 22
Views: 2517

Re: 21st Century - Calibrated Bullet Seating Die vs. Others

Lapping is the answer to a ridge free bearing surface against your bullet down from the tip, but as Barry says the stem will contact all bullets at the same OD, and that length will vary within a batch....! Try using the seating stem once lapped to measure the overall dimension of the bullet ie base...
by Audax
Sat Oct 21, 2017 7:50 am
Forum: Equipment & Technical
Topic: Mastering velocity ES 284W
Replies: 27
Views: 2613

Re: Mastering velocity ES 284W

Yes Peter unfortunately we do have these theories that are difficult to implement. You did explain enough for me to understand exactly where you are coming from. It is precisely that alignment theory that was behind the design for my reamers and re-sizers. I have four and three work exceedingly well...
by Audax
Fri Oct 20, 2017 4:36 pm
Forum: Equipment & Technical
Topic: Mastering velocity ES 284W
Replies: 27
Views: 2613

Re: Mastering velocity ES 284W

Yes so true Peter....BR powder loads invariably are "thrown" and so is the brass if a shot deviates from the group. Not so with the purists....we need BR accuracy with LOW ES, and I do wonder why greater clearances both in the neck and freebore affect the ES so dramatically. And are we mak...
by Audax
Fri Oct 20, 2017 12:50 pm
Forum: Equipment & Technical
Topic: Mastering velocity ES 284W
Replies: 27
Views: 2613

Re: Mastering velocity ES 284W

Further experimentation today revealed some interesting data. The freebore was enlarged to 0.2844" (half a thou larger than the bore for testing the SMK projectiles [ID 0.2839"]) meaning by default the Lapua Scenar-L now has zero clearance. Interestingly the results for both projectiles wi...
by Audax
Wed Oct 18, 2017 12:28 pm
Forum: Equipment & Technical
Topic: Mastering velocity ES 284W
Replies: 27
Views: 2613

Re: Mastering velocity ES 284W

Yes Norm I have heard they can get a bit erratic at lower temperatures, and it appears there can be as much as 20fps with 284W over the range of summer and winter temperatures we get. I only keep them warm to mitigate the ES not to help the stability....hopefully keeping them warm and up to speed wi...

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