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104-10216-10234 JFK Assassination Records Archives 1 (07/01/1964)

handle is hein.jfk/jfkarch77049 and id is 1 raw text is: 104-10216-10234 2022 RELEASE UNDER THE PRESIDENT JOHN F. KENNEDY ASSASSINATION RECORDS ACT OF 1992 4 e. SECRET 1 July 1964 NZRANDUM 0R! T RRORD SUBJECT: Test of Open Sight Hood for 7.682s Belgium (TAL) Rifle A) Memo for .Red. dated 25 May 1044, snbject: 8'.- Iilencers/Sights, from C/W/BA/D)B/vP B) seo for Rcd. dated 10 June 1964, Subject: Tests of odified Sights tos 7.62 Belgium (AL) Rifle 1. On 15 and 16 June 1964, the undersigned and Mr. Bob Ricker, TSD/SDB went to Isolation to test an open Sight hood for the 7.62mm Belgium (yAL) Rifle developed in answer to Ref. A. The Modified Williams peep sight developed previously in answer to Ref. A and reported on in Ref. B. proved unsatisfactory to the requester. The snap-on sight hood was then developed on a quick reaction basis to be simpler to install and easier to use than the illiams sight. In addition somo improved underloaded 7.62mm A1 rounds having Soft, annealed casms and cream of wheat filler were tested for performance. These were developed in hopes of the 55StaU&e anaicIVa UT P4&P e ~ 2. The open ight hood snaps over the ezisting rear sight - _ ,of the PAL rifle, and in theory makes shooting in poor light or at night easier. It can be used with either standard factory loads or the underloaded aamunition in conjunction with the muzzle -attachment silencer. The notch on the rear eight hood is U shaped and raised to compensate for the more curving trajectory of the low velocity amunition. The hood is easily detached making the con- vent ional peep sight available any tipe it i desired. - 3. .The attached data sheet suwmarizes the teat results. It was found that some familiarization was necessary to get used to th4 open sight. Under ideal conditions the eight was as easy to use as the peep sight although it was sore difficult to maintain uniform vertical grouping. The relationship between the eye and rear sight was found to be very critical. As the tests proceeded - a change was noted in the point of impact vs. point of aim which was - thought to be due to a change in sight picture on the part of the - dersiged.- e mpro auition was found to be quite consistant =; :in pertormance. The use of cress of wheat filler to tamp the powder charge against the primer was as attempt to get more even ignition - , with correspondingly improved accuracy. The expended cartridge cases were checked periodically-and no evidence ss found of the `' soft annealed cases not expanding properly. During the tests the rifle and ammunition combination instilled a degree of confidence in the undersigned not present in the previous tests. g, ; - -._~ _. _ _ ° ' .' 7 % : ` ! ''. : w 7 y- ,;> `: .a - . ,* . + ` + i rs ' ' t L ~ 1 W L [ . - :.

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