MUSTANG
08-14-2023, 06:23 PM
This Test was a 10 Round string of fire with the bullet being a Swaged 195 grain bullet having an 8s Nose, made from 5/16 copper tubing. Powder was Winchester 760, and mixed brass. Primers were my remanufactured primers using the FH-42 Primer mixture in the 308 Winchester. The paper foil disks used were made from cash register tape; disks cut ¼ inch hole punch.
Potassium Chlorate 15.6 gr.
Antimony sulfide 10.2 gr.
sulfur [S] 7.3 gr.
Aluminum Powder [AL] 0.2 gr.
Sodium Bicarbonate 0.2 gr.
Total FH42 mixture weight 33.5 Grains. Individual Large primer cups use ~ 0.55 grains for each primer cup.
Rifle: Remington 700 ADL Varmint .308
Barrel Twist: 1 in 12
Wind: 5 Mph left to right.
Temp: 87 degrees F.
Boolit: Swaged Jacketed Bullet using 5/16 Coper tubing- 195 Grains
Ballistic Coefficient:
Brinnel Hardness: N/A
Bullet sized: .308
Alloy: Core - 96% Lead, 3% Antimony, 1% Tin
Bullet Lube: None
Gas Check: None – Bullet Swaged using 5/16 Copper Tubing
Powder: Winchester 760
Primer: Remanufactured – FH-42 Primer Mixture
Case: Mixed military and commercial Brass
OAL: 2.80 inches
Distance: 100 Yards.
10 Shot Group Size: 1 & 5/8 inches.
Velocity: Average 2333; High 2356; Lowest 2292; Spread 64
317038
One goal of this test was to determine if there were issues with higher “Full Load” Pressures of Heavy Jacketed Bullets. Pressures for these loads were approximately 43,000 PSI – extracted from the Load Data listed in the Lyman 48th Edition Reloading Handbook. As seen below; there are no visual indicators of problems with the primers used in this test. These primers had been shot/remanufactured 11 times previously. There is no visible flattening of the primers.
317039
Click on the Picture to expand for a better view.
Some have expressed concerns that the “Remanufactured Primer Cups” might begin to show failure after only a couple of cycles. It appears that in the 43,000 PSI and below pressure levels, the cups survive quite well (11 Loadings). I have not tested them at higher pressure levels anticipated in higher pressure loads such as in full 30-06 or 300 WinMag loads with heavy bullets. Might give them a try later in my testing phases.
Potassium Chlorate 15.6 gr.
Antimony sulfide 10.2 gr.
sulfur [S] 7.3 gr.
Aluminum Powder [AL] 0.2 gr.
Sodium Bicarbonate 0.2 gr.
Total FH42 mixture weight 33.5 Grains. Individual Large primer cups use ~ 0.55 grains for each primer cup.
Rifle: Remington 700 ADL Varmint .308
Barrel Twist: 1 in 12
Wind: 5 Mph left to right.
Temp: 87 degrees F.
Boolit: Swaged Jacketed Bullet using 5/16 Coper tubing- 195 Grains
Ballistic Coefficient:
Brinnel Hardness: N/A
Bullet sized: .308
Alloy: Core - 96% Lead, 3% Antimony, 1% Tin
Bullet Lube: None
Gas Check: None – Bullet Swaged using 5/16 Copper Tubing
Powder: Winchester 760
Primer: Remanufactured – FH-42 Primer Mixture
Case: Mixed military and commercial Brass
OAL: 2.80 inches
Distance: 100 Yards.
10 Shot Group Size: 1 & 5/8 inches.
Velocity: Average 2333; High 2356; Lowest 2292; Spread 64
317038
One goal of this test was to determine if there were issues with higher “Full Load” Pressures of Heavy Jacketed Bullets. Pressures for these loads were approximately 43,000 PSI – extracted from the Load Data listed in the Lyman 48th Edition Reloading Handbook. As seen below; there are no visual indicators of problems with the primers used in this test. These primers had been shot/remanufactured 11 times previously. There is no visible flattening of the primers.
317039
Click on the Picture to expand for a better view.
Some have expressed concerns that the “Remanufactured Primer Cups” might begin to show failure after only a couple of cycles. It appears that in the 43,000 PSI and below pressure levels, the cups survive quite well (11 Loadings). I have not tested them at higher pressure levels anticipated in higher pressure loads such as in full 30-06 or 300 WinMag loads with heavy bullets. Might give them a try later in my testing phases.