MAGAZINE

QUIGLEY SHOOTINGASSOCIATION NEWSMany BPCR rifles (mine included) have a barrel lengthof around 30 inches with a sight radius of around 34inches. This means that we can treat 1/100th of aninch on the rear sight to equate to one minute of angle(MOA).Interim distances not listed can usually be estimatedaccurately enough to put a round on target, enablingfurther adjustment. It should be noted that whenshooting at ranges other than Diggle, these settingsvary slightly depending on elevation above sea level,atmospheric conditions and range construction.Many mid-range sights are fitted with a only a 21/2inch staff, which would really be suitable for shootingup to 800 yards but, the Pedersoli USA 405 Mid RangeSoule is fitted with a 3 inch staff, although not all thiscan be used due to the scaled aperture block, whichtakes up valuable space.However, from this data we can see that if you intendto shoot at ranges not exceeding 1000 yards, thena mid-range vernier sight with a 3 inch staff will beadequate for the job but, with a free play of only 0.5inches or 50 MOA then you are at a maximum. It canalso be noted that my Sharps is fitted with a windageadjustable front sight which is somewhat taller thanthe fixed version, therefore it follows that the sightsettings would in fact be lower if a fixed front sightwas used, giving more adjustment.Actual sight-setting for 1000 yds showingadjustment remaining.Long-range vernier sights are usually fitted with a 4instaff allowing for approximately 31/2 inches of verticaladjustment and so should be adequate for 1200 yardsor perhaps even longer ranges.Comments and questions please to;khall6548@aol.comFull extent of of Pedersoli USA med. rangesight adjustment.75