Blue68f100
Member
CAUTION: The following post includes loading data that is not in any manual, aka wildcat load USE AT YOUR OWN RISK. Neither the writer, The High Road, nor the staff of THR assume any liability for any damage or injury resulting from use of this information.
I was able to shoot some rounds over the crony this afternoon.
Gun used is Custom 1911 5" Kart Barrel in 357 sig
All crony data was collected at 5'
Brass used is RP of unknown source and some Speers range brass for 7.1 & 7.2.
Winchester SP primer used in all
Powder was Dispensed using a RCBS 1500 ChargeMaster and checked against a GP250. I allowed ±0.02 gr variation.
Max length of 1.140" used for these test.
I did a volume measurement to see what I had to work with, RMR 124gr HP @ 1.140" and came up with a internal volume of 0.74cc. This does not include the primer pocket. Just the space under the bullet.
My research showed very little data for the WSF powder. Published data is available for 147 gr bullet weight. With all of these I decided to start my load workup at 6.5 gr of WSF. Below is the crony numbers I came up with. I did not shoot for accuracy, have no sights on the gun. My dot sight has not come in yet.
5 shot average to determine my working range.
gr Avg ft/sec ES SD Comments
6.5 1257, 30, 11 Cold barrel
6.6 1255, 18, 7
6.7 1274, 16, 5
6.8 1288, 16, 6
6.9 1302, 34, 14 Don't know why these numbers (ES, SD) are out of line with the others.
7.0 1316, 25, 8
7.1 1341, 21, 7 Speers Brass, Primers starting to flatten, still have rounded edges, starting to get snappy. I would call this Max load since no velocity was gained at 7.2. but 7.2 had better ES & SD
7.2 1341, 8, 4 Speers Brass, Primers flattening but still have rounded edges. Snappy.
May be getting into +P loads some where around here.
I did test 7.3 and velocity jumped. Primers flattened but still had rounded edges on a few. every thing opened up.
7.3 1384, 52, 20 DO NOT LOAD. OVER PRESSURE, FLATTEN PRIMERS
This chart show the 7.1 & 7.2 running flat, no velocity gain. Remember shot groups of 5 on the chart starting at 6.5 gr
Will continue test once my dot sights come in to determine the most accurate load. Then on to 115gr XTP's.
I was able to shoot some rounds over the crony this afternoon.
Gun used is Custom 1911 5" Kart Barrel in 357 sig
All crony data was collected at 5'
Brass used is RP of unknown source and some Speers range brass for 7.1 & 7.2.
Winchester SP primer used in all
Powder was Dispensed using a RCBS 1500 ChargeMaster and checked against a GP250. I allowed ±0.02 gr variation.
Max length of 1.140" used for these test.
I did a volume measurement to see what I had to work with, RMR 124gr HP @ 1.140" and came up with a internal volume of 0.74cc. This does not include the primer pocket. Just the space under the bullet.
My research showed very little data for the WSF powder. Published data is available for 147 gr bullet weight. With all of these I decided to start my load workup at 6.5 gr of WSF. Below is the crony numbers I came up with. I did not shoot for accuracy, have no sights on the gun. My dot sight has not come in yet.
5 shot average to determine my working range.
gr Avg ft/sec ES SD Comments
6.5 1257, 30, 11 Cold barrel
6.6 1255, 18, 7
6.7 1274, 16, 5
6.8 1288, 16, 6
6.9 1302, 34, 14 Don't know why these numbers (ES, SD) are out of line with the others.
7.0 1316, 25, 8
7.1 1341, 21, 7 Speers Brass, Primers starting to flatten, still have rounded edges, starting to get snappy. I would call this Max load since no velocity was gained at 7.2. but 7.2 had better ES & SD
7.2 1341, 8, 4 Speers Brass, Primers flattening but still have rounded edges. Snappy.
May be getting into +P loads some where around here.
I did test 7.3 and velocity jumped. Primers flattened but still had rounded edges on a few. every thing opened up.
7.3 1384, 52, 20 DO NOT LOAD. OVER PRESSURE, FLATTEN PRIMERS
This chart show the 7.1 & 7.2 running flat, no velocity gain. Remember shot groups of 5 on the chart starting at 6.5 gr
Will continue test once my dot sights come in to determine the most accurate load. Then on to 115gr XTP's.
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