Pressure Trace:pn45 duplex:4 different boosters
Jul 21, 2011 15:13:47 GMT -5
Post by TGinPA on Jul 21, 2011 15:13:47 GMT -5
Pressure Traces: pn45 duplexing same primary with different boosters at the same ratio.
Several have asked if I would do duplex traces of the three popular boosters, all with the same ratio in the duplex, using the same primary for each. OK. Here it is. There is so much here, that it may be best to let those who are interested comment.
TG
Gage and Module Manufacturer = RSI USB model
Trigger Sensitivity = 0, Strain Gage Voltage =5.0 Gage Factor =2.11 PSI Correction Factor: 2kpsi.Barrel Temp = 75-78 degrees F. measured at the sensor (IR). Rifle Stand: Caldwell Lead Sled. Altitude: 450 ft Chronograph: Chrony Alpha Model 8 ft from muzzle. (13 fps. added to all recorded velocities to correct for distance of chrony from muzzle.)
Barrel Type: PacNor .45 Cal Muzzleloader Barrel OD = 1.06in. Barrel ID = .452in.
Breech Plug:Savage Std. (screw-in ventliner) ventliner orifice .032 in. Sensor dist fm BP=1.07in. Bullet Diam.= .448in. Type = Hornady .452in. 250xtp resized to .448in Bullet weight = 250gr. ,unknurled. Sabot:None Wads .462x.06in lubed fiber under lubed wool. Primer: Fed 209A
Powder: Trace 1-2 = N110/H322 14/55gr
Trace 3 = SR4759(metal can)/H322 14/55gr
Trace 4 = SR4759(plastic jug)/H322 14/55gr
Shot fm. dirty barrel. These loads seemed safe in my barrel under the test conditions but may not be so in other conditions.
Several have asked if I would do duplex traces of the three popular boosters, all with the same ratio in the duplex, using the same primary for each. OK. Here it is. There is so much here, that it may be best to let those who are interested comment.
TG
Gage and Module Manufacturer = RSI USB model
Trigger Sensitivity = 0, Strain Gage Voltage =5.0 Gage Factor =2.11 PSI Correction Factor: 2kpsi.Barrel Temp = 75-78 degrees F. measured at the sensor (IR). Rifle Stand: Caldwell Lead Sled. Altitude: 450 ft Chronograph: Chrony Alpha Model 8 ft from muzzle. (13 fps. added to all recorded velocities to correct for distance of chrony from muzzle.)
Barrel Type: PacNor .45 Cal Muzzleloader Barrel OD = 1.06in. Barrel ID = .452in.
Breech Plug:Savage Std. (screw-in ventliner) ventliner orifice .032 in. Sensor dist fm BP=1.07in. Bullet Diam.= .448in. Type = Hornady .452in. 250xtp resized to .448in Bullet weight = 250gr. ,unknurled. Sabot:None Wads .462x.06in lubed fiber under lubed wool. Primer: Fed 209A
Powder: Trace 1-2 = N110/H322 14/55gr
Trace 3 = SR4759(metal can)/H322 14/55gr
Trace 4 = SR4759(plastic jug)/H322 14/55gr
Shot fm. dirty barrel. These loads seemed safe in my barrel under the test conditions but may not be so in other conditions.
