Usable vs Inherent accuracy.
Lack of a windage adjustment handicapped the USABLE accuracy, not the INHERENT accuracy of the M1917. I believe that the M1917 won the Nationals in either 1917 or 1918 .
FWIW
---------- Post added at 01:07 AM ---------- Previous post was at 01:03 AM ----------
ACCURCY
Accuracy, like beauty, is in the eyes of the beholder. Quite frequently I see people describing accuracy by one three shot group at 100 yards. I see people talking about the accuracy of the M1917 vs the M1903. I believe that many are judging the accuracy of the service M1903 to the standards achieved by the NM M1903 which is a far different thing from the run of the mill M1903.
When I was active in High Power shooting, I established a practiced to test rife, ammunition and the combination of both. My criteria were firing three ten shot groups from the bench on as calm a day as possible. I chose 300 yards for it was the belief of my generation that most match bullets were in boat tail configuration and took at least 200 yards to “go to sleep”. Many years ago the NRA conducted some test and published the results that verified this. General Hatcher in his writings indicates that when NM M1903’s were in test, one would occasionally shoot a very tight group that he referred to as a “bumblebee group”. He indicated that when he saw one of these, he had the rifle retested and it shot about like the others in the group.
The test that I would propose would require the following conditions: Two rifles from a regular production run from mid 1918. That is 2 SA and 2 RIA M1903’s and 2 Remington, 2 Winchester, and 2 Eddystone M1917 rifles. The rifles would be fired from a standard rest (Perhaps a Woolworth cradle) at both 300 and 600 yards. Accuracy would be determined by the average of all groups using either group size or the standard US Army ordnance method of MR (mean radius). There is no direct comparison between MR and group size, but the “rule of thumb” was that group size was approximately three times MR. It would be fired using Match grade ammo the equal of 1925 NM ammo. I use mid 1918 production because by that time production problems with the M1917 were under control and the M1903 would have been produced under war time production conditions at the Amory. Of course, I have set conditions that are not achievable.
For the record, I do not believe that group size of MR fired at 600 yards would be exactly double the size at 300 yards. During the pre-WWII period the SA loaded NM, Palma and 300 meter ammunition. The results were published in the American Rifleman in the pre 1929 issues. After 1929, ammunition for the Nationals were selected lots of standard M1 Ball. I have talked to many of the old time shooters who would concur with this observation. Roy Dunlap indicated that pre-WWII Western Super match would shoot into a six inch group at 300 yards and at 600 yards. Western Supermatch was handloaded and noted for its accuracy.
I believe that the M1917 won the Nationals in 1917 or 1918
FWIW
---------- Post added at 01:08 AM ---------- Previous post was at 01:07 AM ----------
[
FWIW