jdgabbard
07-04-2023, 04:33 PM
I'm hoping someone may be willing to run some QL numbers for me. I am hoping to work up some new loads in the 357mag using the Original Ranch Dog .359-190gr GC Mold. I am trying to figure out which powder I want to go with, either IMR 4227 or Alliant 2400.
I'm not entirely certain what all information you'll need, but I've listed what I believe to be enough data below. If you can help a guy out that would be great. And if so, and you need more data, let me know.
Firearm in Question: S&W 65 4"
Barrel Slug: 0.3575"
Cylinder Gap: Can't find my feeler gauges, think the kid ran off with them...
Bullet Sized: 0.358"
Hardness: Estimated 13-14bhn (Aircooled and PC'd 50/50 WW and Range Scrap +2% SN)
Bullet Length: 0.770" with Gas Check (Hornady Copper)
Actual Weight: 190.3gr - 191.1gr
COAL: 1.68"
Seating Depth: 0.385"-ish
Charge weights:
IMR 4227: 10gr - 14gr w/ Magnum Primers
Alliant 2400: 10gr - 12gr w/ Standard Primers
I have run the numbers through GRT, but I'd prefer not to trust it since the 2400 and 4227 do not appear to be the most calibrated of the powders available. But I've added the numbers it suggests below for the given load parameters. GRT says the 4227 will have a low burn rate and inconsistent combustion, I presume due to the lower pressures. But at 14gr it is getting close to touching the base of the boolit what what I'm eyeballing.
IMR 4227
10gr 750fps @ 12,603PSI
11gr 814fps @ 15,347PSI
12gr 883fps @ 18,714PSI
13gr 957fps @ 22,849PSI
14gr 1035fps @ 27,939PSI
Alliant 2400
10gr 934fps @ 21,942PSI
11gr 1017fps @ 27,551PSI
12gr 1101fps @ 34,270PSI
Also if anyone has used loads in this range, and can share their experiences, that would be helpful as well.
Thanks in advance.
I'm not entirely certain what all information you'll need, but I've listed what I believe to be enough data below. If you can help a guy out that would be great. And if so, and you need more data, let me know.
Firearm in Question: S&W 65 4"
Barrel Slug: 0.3575"
Cylinder Gap: Can't find my feeler gauges, think the kid ran off with them...
Bullet Sized: 0.358"
Hardness: Estimated 13-14bhn (Aircooled and PC'd 50/50 WW and Range Scrap +2% SN)
Bullet Length: 0.770" with Gas Check (Hornady Copper)
Actual Weight: 190.3gr - 191.1gr
COAL: 1.68"
Seating Depth: 0.385"-ish
Charge weights:
IMR 4227: 10gr - 14gr w/ Magnum Primers
Alliant 2400: 10gr - 12gr w/ Standard Primers
I have run the numbers through GRT, but I'd prefer not to trust it since the 2400 and 4227 do not appear to be the most calibrated of the powders available. But I've added the numbers it suggests below for the given load parameters. GRT says the 4227 will have a low burn rate and inconsistent combustion, I presume due to the lower pressures. But at 14gr it is getting close to touching the base of the boolit what what I'm eyeballing.
IMR 4227
10gr 750fps @ 12,603PSI
11gr 814fps @ 15,347PSI
12gr 883fps @ 18,714PSI
13gr 957fps @ 22,849PSI
14gr 1035fps @ 27,939PSI
Alliant 2400
10gr 934fps @ 21,942PSI
11gr 1017fps @ 27,551PSI
12gr 1101fps @ 34,270PSI
Also if anyone has used loads in this range, and can share their experiences, that would be helpful as well.
Thanks in advance.