quote:

Originally posted by ALF:
500 gr:

Do you believe or give proof that the mechanics of projectile progression in air is equal to that in dense media?

If so you that belief is in direct opposition to accepted and published ballitistics science?

quote:

Originally posted by Ganyana:
The bull, turned, and immediately charged. The guide fluffed the frontal brain shot, and the LPH backed him up with a frontal chest shot- at 6m. Bull changed from a mock charge to a real one and there was a frantic chase round a baobab until the appy PH managed a frontal brain shot.

quote:

Flesh doesn't have much effect on solids of any nose shape

quote:

Originally posted by Ganyana:
Juan and Mr Rigby

Shooting exam is given in the Africa Information forum (one below shot size topic) has all diagrams.

Basic procedure

1) Write learners theory exam. 4 x 3hr papers on a) Law; b) Habbits and Habitats; c) firearms; d) General paper

2) Be apprenticed to a PH for a minimum of two years

3) Pass the Mars Advanced (or equivalent) First aid cource. We are fighting with MARS as they will no longer teach drips and Dangerous drugs courses. (need drugs license to hold morphine/ Pithedine etc)

4) Pass Shooting exam

5) Shoot a minimum of 5 head of dangerous game (lion, Ele and Buff)- and not all of one! Accompany sufficient hunts to know your trade!

Once you have completed 1-5 you come to an "interview" where a pannel of parks and industry asses weather you have sufficient experience to do reasonably well on the final proficiency. If yes...

Proceed to week long proficiency exam in the Zambezi Valley. In addition to setting up camp and hosting an examiner, each candidate will be required to skin, track, set up a hunt (too many guys used to rely on their staff to do the skinning and the actual hunting). He will be questioned on birds trees geology, termites or anything else the examiner knows about- A PH is also alowed to conduct eco- tourists on walks so he had better know more than the five "hunters trees" - (a Shade tree; a Bait tree; a Thorn tree; a Firewood tree and an Escape tree).

Each candidate will have to shoot either an elephant or Buffalo or occasionally may be detailed to bait and shoot a hyaena. (all candidates will be examined on baiting but usually only where the candidate has plenty of ele and buff experience but is short of cat will he have to set up and shoot a hyaena. Often I get candidates to bait leopard or lion for photography purposes instead)

At the end of all of that, if the joint examinations committee (parks & ZPHGA) are satisfied, you come out with a PH license

We do run a week long "finishing school" at rifa before the final proficiency. This is open to visitors.

quote:

Originally posted by 500grains:


I believe I know where the .416 blue Barnes came from, and if I am correct the load was as follows:

416 Rigby
102.0 grains H4831 (regular cut)
F215 primer
about 2420 fps

As to the question of why it would tumble, there is a two part answer. First, the bullet is made from brass which is not very dense and hence very long. Unless a faster than normal twist is used in the barrel, then such a bullet will be less stable than a lead core bullet due to excessive yaw caused by length. The solution is to step down 10% in bullet weight if using brass bullets, or to use a faster twist barrel. the second issue is nose shape. The Barnes blue bullets had a hemispherical nose which seems to have a negative influence on both penetration and bullet stability.

quote:

Originally posted by Ganyana:
Bell tried the 6,5 but found that the 160grn bullets lacked integral strength (ie were too long for diamiter) and bent- so he soon gave up on that plan. Looking at the last two proficiency exams I feel (but do not have sufficient data) that the Barnes 450grn .458 bullets penetrate better than the 500grn ones - I have not seen a distorted 450grn bullet yet (but almost all have exited)