Search found 620 matches

by KHGS
Wed Dec 11, 2019 5:28 pm
Forum: Equipment & Technical
Topic: 204 short - off topic
Replies: 4
Views: 363

Re: 204 short - off topic

I have done a number of 20 HI chamberings. This is a 204 reamer run in to 223 case length. Dies shortened to 223 length, cases are formed in one pass, load & shoot. This chambering will launch a 40 grain bullet at around 3700 fps. the loaded round will fit all short action mags better than 204 R...
by KHGS
Tue Nov 05, 2019 5:19 pm
Forum: Equipment & Technical
Topic: Tips for those with an open mind
Replies: 24
Views: 1774

Re: Tips for those with an open mind

Gman, I think you have to have a foot in each camp on this one, depending on conditions. But I can say, some barrels do not tolerate various degrees of cooling with variable time intervals in waiting things out. Tests from the machine rest at 1000 yards from a dozen different barrels I used perform...
by KHGS
Mon Nov 04, 2019 7:36 am
Forum: Equipment & Technical
Topic: Tips for those with an open mind
Replies: 24
Views: 1774

Re: Tips for those with an open mind

http://forum.accurateshooter.com/threads/shooting-tips-practice-shooting-fast-and-accurately.3990694/ Tips on adding another string to your bow. Matt P Do you mean that it's not cheating to shoot fast??? So it really is a "skill" that must be learned just like any other skill?? Funny that...
by KHGS
Mon Nov 04, 2019 7:24 am
Forum: Equipment & Technical
Topic: Problems with CCI 450s
Replies: 85
Views: 9392

Re: Problems with CCI 450s

One of my Barnards is a'98 model. Bolt has always been de-cocked at end of days shooting. Always goes bang with all brands of primers. Do not know how many shots fired. Cheers, Trevor. You must of got one of the springs not made of "metals which dont weaken like Barnard springs do" :roll:...
by KHGS
Sat Nov 02, 2019 8:17 am
Forum: Equipment & Technical
Topic: Problems with CCI 450s
Replies: 85
Views: 9392

Re: Problems with CCI 450s

I think what Keith meant was that although lock time has nothing to do with longevity of the spring, it does at the pointy end where we live, because military actions have freight train firing pins and they travel interstate to get to the primer, a large percentage of the energy required for igniti...
by KHGS
Fri Nov 01, 2019 1:06 pm
Forum: Equipment & Technical
Topic: Problems with CCI 450s
Replies: 85
Views: 9392

Re: Problems with CCI 450s

True, but if Barnard spring is worn out in 4 years just being under tension then it is not a good spring. There are military actions with 50 year old springs which are still hitting very hard with no miss fires. Either Barnard are making springs out of old coat hangers or CCI are the problem. Chris...
by KHGS
Fri Nov 01, 2019 10:18 am
Forum: Equipment & Technical
Topic: Problems with CCI 450s
Replies: 85
Views: 9392

Re: Problems with CCI 450s

Whether decocked or not, firing pin springs can still loose their strength. De- cocking will help but the spring is still under tension. True, but if Barnard spring is worn out in 4 years just being under tension then it is not a good spring. There are military actions with 50 year old springs whic...
by KHGS
Wed Oct 23, 2019 5:20 pm
Forum: Equipment & Technical
Topic: Twist rate to charge weight
Replies: 14
Views: 942

Re: Twist rate to charge weight

It would be interesting to get very accurate muzzle V measurements. On one hand, more energy is carried by a faster spinning bullet with the same MV, but on the other hand there is likely to be an increase in pressure perhaps also leading to higher MV. Everything else needs to be absolutely identic...
by KHGS
Wed Oct 23, 2019 5:18 pm
Forum: Equipment & Technical
Topic: To turn or not to turn
Replies: 26
Views: 1455

Re: To turn or not to turn

Tim N , its quite simple really , If your goal is LONG RANGE PRECISION !! Then prep your Brass with PRECISION .... Period!!! Aahhh, but the definition of "precision" is the thing! For some it is doing every possible thing under the sun (nothing wrong with that) for me it's doing the minim...
by KHGS
Wed Oct 23, 2019 5:08 pm
Forum: Equipment & Technical
Topic: Should I go an 8 twist in a 7 mm?
Replies: 18
Views: 977

Re: Should I go an 8 twist in a 7 mm?

What Bruce said. 9 twist will handle any sensible to use 7mm bullet!! Unless you want to make some of the overweight bullets work......that no one else has been able to get to work ..........consistently and for what gain???? I imagine you have heard the term.....point of diminishing returns???? Kei...
by KHGS
Wed Oct 23, 2019 7:36 am
Forum: Equipment & Technical
Topic: Twist rate to charge weight
Replies: 14
Views: 942

Re: Twist rate to charge weight

My question is, does changing twist rate necessitate a change in powder load? Example going from a 9T to a 8T need a reduction in powder charge owing to the extra resistance in the tighter twist. I believe that any change is lost in the "noise" of barrel to barrel variations in velocity w...
by KHGS
Tue Oct 22, 2019 6:06 pm
Forum: Equipment & Technical
Topic: To turn or not to turn
Replies: 26
Views: 1455

Re: To turn or not to turn

I avoid neckturning like the plague!!! I use a Lee collet die & shoulder bump with a body die when needed, at about 6 to 9 reloads. My cartridge is based on 30/06 cases with a 40 degree shoulder and std Ackley body taper. I have never annealed a case in my life & cannot remember when I last...
by KHGS
Tue Oct 22, 2019 3:40 pm
Forum: Equipment & Technical
Topic: To turn or not to turn
Replies: 26
Views: 1455

Re: To turn or not to turn

Neck turning for F-Class is all about "headspace"!!! :) :) :) :) :)
Keith H.
by KHGS
Tue Oct 22, 2019 11:05 am
Forum: Equipment & Technical
Topic: To turn or not to turn
Replies: 26
Views: 1455

Re: To turn or not to turn

I avoid neckturning like the plague!!! I use a Lee collet die & shoulder bump with a body die when needed, at about 6 to 9 reloads. My cartridge is based on 30/06 cases with a 40 degree shoulder and std Ackley body taper. I have never annealed a case in my life & cannot remember when I last ...
by KHGS
Mon Oct 21, 2019 8:56 pm
Forum: Equipment & Technical
Topic: Optimum 308 Win neck engagement
Replies: 13
Views: 796

Re: Optimum 308 Win neck engagement

I must admit I do it the other way round. I use a ptag FTR reamer that gives 308 freebore. Neck engagement is the result of whatever jump/jam i end up with. I take it you want to know the ideal neck engagement in order to determine freebore? Tbh Shane i don't think anyone has looked closely enough ...

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