Search found 355 matches

by pjifl
Fri Nov 03, 2017 2:48 pm
Forum: Equipment & Technical
Topic: Somchem S365 South Africa , Next World Champs
Replies: 18
Views: 1024

Re: Somchem S365 South Africa , Next World Champs

Rules I think limit caliber to 8mm.

So it is obviously going to be a 338-8mm. Or 338-308 !!!!

Just play around and make no commitment for a while yet. Accuracy and shootability are still paramount and I expect the 7 SAUM still will be a good contender.

Peter Smith.
by pjifl
Wed Oct 25, 2017 2:19 am
Forum: Equipment & Technical
Topic: F-Open Calibre Poll - Long Range
Replies: 14
Views: 5861

Re: F-Open Calibre Poll - Long Range

I will add that I always shoot free recoil. And that includes the 7 SAUM. I point this out because I don't want people to discount the possibility of free recoil with big cartridges. And I am now forced to shoot what I call the crossover position (no jokes please !) That is from the left shoulder, l...
by pjifl
Sat Oct 21, 2017 1:29 am
Forum: Equipment & Technical
Topic: Mastering velocity ES 284W
Replies: 27
Views: 893

Re: Mastering velocity ES 284W

Maybe I did not explain my theory very well. I believe with extremely tight or zero tolerances on neck clearance and freebore diameter, jamming the projectile actually works against you with respect to best Vsd. If there is even a minute amount of cartridge runout, the jam will jack the projectile a...
by pjifl
Fri Oct 20, 2017 2:23 pm
Forum: Equipment & Technical
Topic: Mastering velocity ES 284W
Replies: 27
Views: 893

Re: Mastering velocity ES 284W

I have given a lot of thought to the relative importance of neck clearance and adequate freebore diameter in really long range shooting compared to obsessive turned necks and snug fits in short range benchrest shooting. Short range shooting can tolerate far more variation in velocity and more of a l...
by pjifl
Fri Oct 20, 2017 2:22 pm
Forum: Equipment & Technical
Topic: Mastering velocity ES 284W
Replies: 27
Views: 893

Re: Mastering velocity ES 284W

I have given a lot of thought to the relative importance of neck clearance and adequate freebore diameter in really long range shooting compared to obsessive turned necks and snug fits in short range benchrest shooting. Short range shooting can tolerate far more variation in velocity and more of a l...
by pjifl
Thu Oct 19, 2017 6:52 pm
Forum: Equipment & Technical
Topic: F-Open Calibre Poll - Long Range
Replies: 14
Views: 5861

Re: F-Open Calibre Poll - Long Range

I think the transition point to a special rifle for the longs should be based on a distance further than 600y. 700y and 800y (an easy target anyway) can be shot well with a 'shorter range rifle' thus saving the special long range rifle barrel wear and tear. If 'long range' includes 1000y yards (many...
by pjifl
Tue Oct 17, 2017 5:48 pm
Forum: Equipment & Technical
Topic: powder in .223
Replies: 6
Views: 394

Re: powder in .223

Have not shot 223 now for ages but when I did settled on 2208 powder. Used the same powder in a 6BR and also occasionally I load 308s with 2208. So the only powders I keep these days are 2208 and 2209. One thing I found was that running hot loads sometimes pierced primers. Moved over to the small CC...
by pjifl
Tue Oct 17, 2017 12:35 pm
Forum: Equipment & Technical
Topic: Feet on concrete mounds
Replies: 5
Views: 305

Re: Feet on concrete mounds

I have screw in feet on both the front rest and rear plate. Different feet depending on different ground or concrete. Long thin spikes for very hard but irregular baked ground. Deep but far more broad ones for marshy ground which we get in the North on some ranges after a lot of rain. Have experimen...
by pjifl
Tue Oct 17, 2017 10:03 am
Forum: Equipment & Technical
Topic: Borescope
Replies: 7
Views: 374

Re: Borescope

I recently saw a BoreCam in action and found it distinctly worse than a good traditional BoreScope. That is not to say it was no good, but the quality of the image disappointed me. I believe most of the difference is in the dynamic range of the camera and software used. The nature of a view of metal...
by pjifl
Mon Oct 16, 2017 2:40 pm
Forum: Equipment & Technical
Topic: Lee Collet Neck Die
Replies: 17
Views: 2261

Re: Lee Collet Neck Die

One of the great advantages of the Lee Collet Dies is that a user can usually modify them to suite unusual cartridges or wildcats. One needs to start with a Lee Collet Die intended for the desired calibre diameter but long enough and fat enough to take the case. Then machine up spacing disks and rin...
by pjifl
Fri Oct 13, 2017 1:06 pm
Forum: Events
Topic: Canberra Queens
Replies: 25
Views: 2003

Re: Canberra Queens

One problem that seems to be emerging with the NQRA Kongsbergs is that some of the data transfer plugs occasionally give trouble. A few glitches were solved at the last Pennants shoot by unplugging, cleaning and spraying the plug pins and working them back together again. Perhaps this will get worse...
by pjifl
Wed Oct 11, 2017 5:29 pm
Forum: Events
Topic: ULTRA-LONG RANGE CHALLENGE
Replies: 32
Views: 2674

Re: ULTRA-LONG RANGE CHALLENGE

That article by Kolbe contains some outdated information on ballistic calculation methods and ballistic coefficients. But in general it is correct. There is a short addendum to it which is more recent and worth reading. I have won a few MR (FO division) contests with a 6.5 Rogue a few times and also...
by pjifl
Fri Sep 29, 2017 10:04 am
Forum: Equipment & Technical
Topic: NRAA Factory Ammo Velocity
Replies: 3
Views: 342

NRAA Factory Ammo Velocity

It is years since I had anything to do with the NRAA Supplied Factory Ammo.

Does anyone have measurements of what Velocity can be expected from this stuff ?
Both 308 and 223.
I am not really interested in knowing its quality, just the typical Velocity and bullet used.

Peter Smith.
by pjifl
Thu Sep 21, 2017 12:12 pm
Forum: Equipment & Technical
Topic: .308 Headspace
Replies: 12
Views: 826

Re: .308 Headspace

There are a whole pile of common items you cam make shims from. Scissors and Soft drink cans are always available whose wall is about 4 - 5 thou thick. Check with micrometer. Plain paper is about 3 thou thick. These are more for emergency use and are fiddly but are quite successful. Best held with a...
by pjifl
Sat Sep 16, 2017 5:35 pm
Forum: Equipment & Technical
Topic: Several primers not showing much pin strike
Replies: 61
Views: 2760

Re: Several primers not showing much pin strike

About two years ago I had a strange experience with some primers not going off. In a Barnard. This was very unexpected because I have never had primer problems before either in an Omark or Barnard over 20 years of shooting. I had just beforehand developed a very very heavy hand seating primers in SA...

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