CVA Sidelock Rifle Information Manual
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the ramrod with a hammer. As the puller screw bites deeper and deeper into the soft lead projec- tile, the ramrod will become difficult to turn and it will require the use of pliers. Pad the jaws of the pliers so that you do not mar the ramrod. Once the puller screw has embedded itself firmly into the projectile, pull out the ramrod and extract the ball or bullet. In actuality, this process is some- what tedious and it will require your patience. When working with a badly fouled bore, the puller screw...
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and spaced .860 on center. Scopes should be mounted according to manufacturer Õs in- structions. R. INTRODUCTION TO THE BALLISTICS TABLES HOW VELOCITY WAS MEASURED Two Oehler 35P Proof chronographs were employed to gather velocity data. One shot was fired to Òdress the boreÓ before testing for bullet velocity. The bore was swabbed between test shots when blackpowder was used but not when Pyrodex was used. WHY DATA VARIES Two identical firearms will not produce identical velocities in spite of using...
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19 example, may be minutely slower in velocity than a bullet with less surface contact with the bore. DO NOT USE OVERSIZED CONICAL BULLETS IN YOUR CVA GUN. CVA rifles are designed for use with patched round balls, bullets with sabots (not to be confused with Poly-Patch) and most conical bullets. Some extremely large conical bullets cause very high pressures due to poor fit to bore diameter, improper gas seal and excessive mass. The use of any projectile over 400 grains in a .50 caliber rifle could cause...
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100 YARD VELOCITY One hundred yard velocity was derived from ballistic coefficient figures. A spot check to verify mathematical and actual downrange bullet velocities was conducted using an Oehler 35P Proof chronograph with Skyscreens. Computed and actual downrange velocities were quite close. ENERGY Energy figures were computed using the Newtonian formula, the only formula accepted by all ammo companies. TRAJECTORY Trajectory figures were derived mathematically with spot checks by shooting randomly...
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100 YARD VELOCITY Measured in feet per second, this number gives the speed of the projectile at 100 yards. An interesting comparison between projectiles can be noted by figuring the percentage of velocity each projectile retained at 100 yards. Example: CVA St. Louis Hawken % Muzzle 100 Yard Velocity Velocity ProjectileVelocityVelocityLostLost 300 GR Buckslayerª Bullet 1515 1212 303 20% 177 GR Round Ball 1712 959 753 44% It is easily noted that the Buckslayerª Bullet loses only 20 percent of its velocity...
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22 When checking the data you will note that many blackpowder guns are capable of out- standing accuracy. Many of the groups registered are in the one-inch class measuring 1.0 to 1.25 with some guns even yielding groups under an inch. Outstanding! Also note: All shooting in this manual was done with open sights. Scoped rifle tests that were conducted lead to the conclusion that the average group at 50 yards shown on the following tables could be dupli- cated at 100 yards by mounting a scope on the test...
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23 LOADING DATA FOR BLACKPOWDER RIFLES Manufacturer: Connecticut Valley Arms Name of Gun: St. Louis Hawken Caliber: .50 Rate of Twist: 1 in 48ÓBarrel Length: 28Ó Percussion Cap: CVA Hot FlashLube: CVA Slick Load Lube PowderMuzzle Muzzle 100 Yard 100 Yard 50 Yard Charge Velocity Energy Velocity Energy Average Projectile FFG FPS FP FPS FP Group 177 Grain .490 Patched Roundball 90 GR 1712 1152 959 362 1.75 Trajectory Sight in 25 50 100 125 Information (in inches) Yards Yards Yards Yards 0 +2.5 0 -5...
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PowderMuzzle Muzzle 100 Yard 100 Yard 50 Yard Charge Velocity Energy Velocity Energy Average Projectile FFG FPS FP FPS FP Group 225 Grain .530 Patched Roundball 100 GR 1673 1399 1004 504 2.0 Trajectory Sight in 25 50 100 125 Information (in inches) Yards Yards Yards Yards +2.0 +2.75 0 -5 Manufacturer: Connecticut Valley Arms Name of Gun: St. Louis Hawken Caliber: .54 Rate of Twist: 1 in 48ÓBarrel Length: 28Ó Percussion Cap: CVA Hot FlashLube: CVA Slick Load Lube PowderMuzzle Muzzle 100 Yard 100...
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PowderMuzzle Muzzle 100 Yard 100 Yard 50 Yard Charge Velocity Energy Velocity Energy Average Projectile FFG FPS FP FPS FP Group 177 Grain .490 Patched Roundball 90 GR 1777 1291 995 389 2.5 Trajectory Sight in 25 50 100 125 Information (in inches) Yards Yards Yards Yards 0 +2.5 0 -5 Manufacturer: Connecticut Valley Arms Name of Gun: Colorado MusketMagª Caliber: .50 Rate of Twist: 1 in 32ÓBarrel Length: 26Ó Percussion Cap: CVA Hot FlashLube: CVA Slick Load Lube PowderMuzzle Muzzle 100 Yard 100 Yard...
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26 PowderMuzzle Muzzle 100 Yard 100 Yard 50 Yard Charge Velocity Energy Velocity Energy Average Projectile FFG FPS FP FPS FP Group 225 Grain .530 Patched Roundball 100 GR 1632 1331 979 479 2.75 Trajectory Sight in 25 50 100 125 Information (in inches) Yards Yards Yards Yards +2.0 +2.75 0 -5 Manufacturer: Connecticut Valley Arms Name of Gun: Colorado MusketMagª Caliber: .54 Rate of Twist: 1 in 32ÓBarrel Length: 26Ó Percussion Cap: CVA Hot FlashLube: CVA Slick Load Lube PowderMuzzle Muzzle 100 Yard...