Editing Project HARP (section)

==== Yuma Proving Ground ====
The 16-inch HARP gun at Yuma Proving Ground was constructed in 1966 in order to establish a functional 16-inch gun on American soil and holds the record for achieving the highest projectile launched.<ref name=":3" /> It was almost identical to the 16-inch gun on Barbados, being 119&nbsp;ft long, but was limited by a 35-mile range restriction. However, unlike the Barbados gun, its projectiles could be recovered since they were not lost in the ocean upon their journey back down. The Yuma 16-inch gun was primarily used for flight tests, such as those testing altitude control and telemetry components.<ref name=":5" /> In 1966, the 16-inch Yuma gun underwent three firing series using wooden slugs, Martlet 2C's, and a Low Altitude High-Velocity cone.<ref name=":0">{{cite report |url=https://apps.dtic.mil/dtic/tr/fulltext/u2/654123.pdf |archive-url=https://web.archive.org/web/20181216040500/https://apps.dtic.mil/dtic/tr/fulltext/u2/654123.pdf |url-status=dead |archive-date=December 16, 2018 |title=HARP 5-Inch and 16-Inch Guns at Yuma Proving Ground, Arizona |last1=Murphy |first1=Charles |last2=Bull |first2=Gerald |date=February 1967 |publisher=Ballistic Research Laboratory |id=AD654123 |via=Defense Technical Information Center}}</ref>
{| class="wikitable sortable" style="text-align:right;"
|+Performance Test of Yuma 16-inch HARP gun in 1966<ref name=":0" />
!Date
!Round<br /> number<ref>All projectiles used for this test were Martlet 2C's, except for the ones indicated with (W), i.e. wooded slugs, and (L), i.e. Low Altitude High Velocity cone.</ref>
!Mass<br /> (lb)
!Muzzle<br /> velocity<br /> (ft/s)
!Apogee<br /> (kilofeet)
!Apogee<br /> (kilometers)
|-
|June 7
|001 (W)
|700
|3360
|No track
|No track
|-
|June 8
|002 (W)
|800
|3190
|No track
|No track
|-
|June 13
|003 (W)
|660
|4810
|No track
|No track
|-
|June 13
|004
|760
|5930
|415
|126.5
|-
|June 13
|005
|780
|5810
|398
|121.3
|-
|June 14
|006
|780
|6060
|400
|121.92
|-
|June 14
|007
|800
|6270
|Damaged
|Damaged
|-
|June 15
|008
|760
|5630
|375
|114.3
|-
|June 15
|009
|780
|5850
|410
|125
|-
|Oct. 25
|010
|1095
|5250
|310
|94.5
|-
|Oct. 26
|011
|1225
|5950
|410
|125
|-
|Oct. 26
|012
|920
|6800
|540
|164.6
|-
|Oct. 27
|013 (L)
|900
|7100
|No track
|No track
|-
|Oct. 27
|014
|1275
|5900
|415
|126.5
|-
|Oct. 27
|015
|920
|6780
|535
|163
|-
|Oct. 27
|016
|950
|7040
|Damaged
|Damaged
|-
|Nov. 16
|017
|1290
|5900
|396
|120.7
|-
|Nov. 16
|018
|1292
|5900
|395
|120.4
|-
|Nov. 16
|019
|1296
|5850
|415
|126.5
|-
|Nov.17
|020
|1296
|5950
|415
|126.5
|-
|Nov. 17
|021
|1290
|NA
|Damaged
|Damaged
|-
|Nov. 18
|022
|1263
|5900
|400
|122
|-
|Nov. 18
|023
|1263
|5850
|410
|125
|-
|Nov. 18
|024
|922
|6650
|510
|155.5
|-
|Nov. 18
|025
|880
|6400
|490
|150.3
|-
|Nov. 19
|026
|910
|6650
|530
|131
|-
|Nov. 19
|027
|1270
|5850
|400
|122
|-
|Nov. 19
|028
|960
|7000
|590
|180
|-
|Nov. 19
|029
|1270
|NA
|Damaged
|Damaged
|-
|Nov. 19
|030
|960
|6350
|480
|146.3
|-
|Nov. 19
|031
|1270
|5650
|367
|112
|-
|Nov. 19
|032
|1270
|5650
|370
|113
|-
|Nov. 19
|033
|880
|6750
|550
|167.6
|}