This is a second report in a series of SW Match Rifle powder tests.
Heres a link to the first and some history.
http://www.65grendel.com/forum/showthrea...tch-Rifle
Starting with data from the Shooters World loading PFD.
https://shootersworldpowder.com/wp-conte...manual.pdf
Starline brass, CCI #41 primers and a 2.260 COAL
Im switching to the Sierra 130 GC, instead of the Sierra 130 TMK used in the SW data.
The book calls for a min charge of 25.0 grns up to a max of 31.0 grns
Power is dispensed with a Chargemaster Lite
Using a Howa Mini 20 HB
3 shot groups recorded with a LabRadar
Pretty much a Standard day, 60f/ at Sea level
Grns/FPS/ES/SD
1. 28.9 2373/ 32/18 ( 1.0 3rd)
2. 29.2 2412/ 7/4
3. 29.5 2431/ 3/1.4 (.71 2nd)
4. 29.8 2447/ 20/11
5. 30.1 2473/ 29/15
6. 30.4 2486/ 27/14 ( .7 Best Group)
7. 30.7 2495/ 28/14
8. 31.0 2525/ 13/6.6 (1.2 4th)
Once again no signs of pressure or anything else for that matter, just a nice steady predictable increase in speed across the series. Looks promising. Powder burns clean also, really clean. A plus in my book.
Ive never put much stock in 3 shot groups, if any but, there looks like there is at least some potential there. Especially for just throwing these loads together, with little regard for concentricity, neck tension or having any idea what the jam or jump is/was with this combo?
Going to try some 129 ABLRs next out of the CZ 527. Ill have more mag room to work with and a 4 longer tube. Maybe get north of 2650? 2700+? Well see.
Heres a link to the first and some history.
http://www.65grendel.com/forum/showthrea...tch-Rifle
Starting with data from the Shooters World loading PFD.
https://shootersworldpowder.com/wp-conte...manual.pdf
Starline brass, CCI #41 primers and a 2.260 COAL
Im switching to the Sierra 130 GC, instead of the Sierra 130 TMK used in the SW data.
The book calls for a min charge of 25.0 grns up to a max of 31.0 grns
Power is dispensed with a Chargemaster Lite
Using a Howa Mini 20 HB
3 shot groups recorded with a LabRadar
Pretty much a Standard day, 60f/ at Sea level
Grns/FPS/ES/SD
1. 28.9 2373/ 32/18 ( 1.0 3rd)
2. 29.2 2412/ 7/4
3. 29.5 2431/ 3/1.4 (.71 2nd)
4. 29.8 2447/ 20/11
5. 30.1 2473/ 29/15
6. 30.4 2486/ 27/14 ( .7 Best Group)
7. 30.7 2495/ 28/14
8. 31.0 2525/ 13/6.6 (1.2 4th)
Once again no signs of pressure or anything else for that matter, just a nice steady predictable increase in speed across the series. Looks promising. Powder burns clean also, really clean. A plus in my book.
Ive never put much stock in 3 shot groups, if any but, there looks like there is at least some potential there. Especially for just throwing these loads together, with little regard for concentricity, neck tension or having any idea what the jam or jump is/was with this combo?
Going to try some 129 ABLRs next out of the CZ 527. Ill have more mag room to work with and a 4 longer tube. Maybe get north of 2650? 2700+? Well see.