quote:

"Lyman's 47th" 1992
385 cast gr cast, 17.5 gr Unique, 1411 fps, 38,500 cup, for Ruger #1

quote:

Originally posted by tnekkcc:
...So why do I(aka Batman) bother interacting with them? ...

quote:

So I validated the calculations.
That did not change any one's attitude.

quote:

If I use my Quickload program to estimate the pressures that destroyed
the Enfields in
Ackley's book:

P.O. Ackley 'Handbook for Shooters and Reloaders Vol. 2', 1966, page 2,
actions to be
tested:

6. Eddystone-Enfield Number 952302
62 gr 3031 140 gr .270 Ackley magnum
102,000 psi

7. Remington-Enfield Number 673777
68 gr 3031, 180 gr .270 Ackley magnum
197,000 psi

13. British Lee Enfield, Mark III caliber .303, Number 41469
50 gr 2400, 150 gr .30-40 Improved [.303 Epps]
159,000 psi

I have done destructive tests, and reading between the lines, more
testing is needed before
we form conclusions.


The big problem with Ackley is that no one has written anything better
since. He thought that the P14 was a strong action in Volume 1, but when
he tests it in volume 2 he finds differently. This is obscured by the
use of the term "Enfield" on page 10 that can only be identified from
inference from the test ordering corresponding to the paragraph
description order.

1962, Volume 1 , page 447:
"Any rifle chambered for the 303 British can be rechambered for the Epps
version but the SMLE type rifle will not accept the heavy charges as the
P14 Enfield rifle"

1966 Volume 2, page 10:
The Enfield action [Remington and Eddystone] proved somewhat of a
disappointment in these tests. It was expected that it would be the
strongest one, and further tests will be run with this particular action
to see if the two used were representative. However, the two which have
been tested so far are widely different in physical characteristics.
That is, the heat treatment given the two actions varied a great deal.
One action [Eddystone] was extremely hard and blew up rather easily.
When the blowup occurred, the action was nearly disintegrated and is one
of the few blowups which would have perhaps proven fatal to the shooter.
The other Enfield action [Remington] was extremely soft. It was
practically impossible to break the action but after the loads reached a
high pressure level, excessive setback was indicated on each successive
shot, resulting in a dangerous headspace condition."

1966 Volume 2, page 13:
The British Enfield gave us an example of the rear locking lug system.
The strength of this action seemed to be good; probably a little better
than the Krag. [page 15: "The Krag actions tested showed surprising
strength."] However the locking lugs are over four inches back from the
face of the bolt. When this action gave way, the receiver itself went
down at the rear, allowing the front end of the bolt to come up out of
the receiver ring, thus allowing the bolt to be bent and to be broken.
The locking lugs themselves did not give way. The whole action appeared
to have plenty of strength except for this one characteristic, which
allows too much spring in the bolt and receiver. This action is not of
prime consideration, however, because it des not have the appearance or
another feature which make it desirable for sporting use. It also must
be noted that regular .30 caliber bullets were used in this rifle
instead of the oversized .303 British bullets. This, doubtless, gave
slightly lower pressure than the standard bullet would have given."

quote:

When this action gave way, the receiver itself went
down at the rear, allowing the front end of the bolt to come up out of
the receiver ring, thus allowing the bolt to be bent and to be broken.
The locking lugs themselves did not give way