375HH Swift 250gr A-Frame load data

[Ngonyama]

I’m looking for load data on the 250gr A-Frame for my 375HH if someone has a manual.

Im on 66.5gr of S335 at the moment.H20 case volume with bullet seated is 86.1 grains.Fired cases neck sized

 

[Luvthunt]

I use Re 15 for 2800 fps behind a 260 Nosler Partition. Works well

 

[IvW]

I would use S355 you should get up to 2800 fps depending on rifle and cases used...

 

[Goat416]

From the Swift Manual

 

[Ngonyama]

I would use S355 you should get up to 2800 fps depending on rifle and cases used...

I have a fast flat shooting round in Viper 235gr monolithic.The A frame is for Bushveld shorter ranges .I bought what I could get at the time .N150 for the vipers ,varget and S335 for the 250’s

 

[Ngonyama]

From the Swift Manual

View attachment 680600View attachment 680601

Thank you .

 

[PHOENIX PHIL]

I've used H4895 and Varget to develop loads for the 250gr North Fork. I would expect them to work well with the same size A-Frames. Pressure was lower with the H4895 load for the same velocity as the Varget was getting. And my velocities were in the 2800-2850fps range.

 

[FlyGuy]

I have a fast flat shooting round in Viper 235gr monolithic.The A frame is for Bushveld shorter ranges .I bought what I could get at the time .N150 for the vipers ,varget and S335 for the 250’s

Use the IMR4064 data for S335 but work up slowly!!!!
335 is a bit faster burning than 4064

 

[Ngonyama]

Use the IMR4064 data for S335 but work up slowly!!!!
335 is a bit faster burning than 4064

Use the IMR4064 data for S335 but work up slowly!!!!
335 is a bit faster burning than 4064

Thanks ,I will .

 

[IvW]

Use the IMR4064 data for S335 but work up slowly!!!!
335 is a bit faster burning than 4064

Just rather use the Somchem reloading data on their site.....

 

[Ngonyama]

Just rather use the Somchem reloading data on their site.....

They don’t have Swift .I used the Somchem data and P-max software to get me going .

 

[IvW]

Swift and Rhino are close.....

 

[Jefferry404]

@Ngonyama
i agree with your load. What I do, I fit known data in Quickload. In this case, fitted s335 with Sochem data for 235gn speer bullet. Then, with the same QL fitting parameters, use Swift bullet. Get 2650fps at 61272psi with 24" barrel. BTW, QL was near max. PSI for the maximum Sochem data.
Steve

 

[pilar]

I took a quick glance and it kicked out this

 

[FlyGuy]

They don’t have Swift .I used the Somchem data and P-max software to get me going .

Do yourself a favour and download Gordon’s Reloading Tool.
It’s free, and has both Swift and Somchem listed.
BUT… the default Swift initial pressure is incorrect. You can set it to 3626psi.
Once you know how to drive the program, it’s surprisingly accurate.

Like QL, it’s not the final solution, but it will get you close.
Especially important with bullets like Swift that are as scarce as hen’s teeth.

 

[Jefferry404]

@FlyGuy
What is the shot start pressure for swift in GRT.
FWIW, looked into it in QL and the author responded that he had the Swift shot start pressures measured.

 

[Ngonyama]

Do yourself a favour and download Gordon’s Reloading Tool.
It’s free, and has both Swift and Somchem listed.
BUT… the default Swift initial pressure is incorrect. You can set it to 3626psi.
Once you know how to drive the program, it’s surprisingly accurate.

Like QL, it’s not the final solution, but it will get you close.
Especially important with bullets like Swift that are as scarce as hen’s teeth.

I’ve used GRT,works well but not available for iOS .Been using P-max.Ive had these swifts in my safe for 3 years,hoping they’d multiply

 

[FlyGuy]

@Jeff…
The IP changes with every individual load combination.
Try the following…
Set the IP at 3626psi for the Swifts.
Choose a moderate load and shoot 3 over the chrony.
Enter the charge weight and velocities into the measurement tab.
Adjust the IP, until the velocity in the results tab equals the actual velocity results.
Eg. 2664.3 fps
That is the actual IP value for your load.

 

[FlyGuy]

I’ve used GRT,works well but not available for iOS .Been using P-max.Ive had these swifts in my safe for 3 years,hoping they’d multiply

I know the feeling…
Even planted a few hoping for a Swift tree to grow, but no luck
According to Bill from Swift, Nicolas Yale are going to be importing Swift to SA.
Unfortunately, nobody at Nicolas Yale can tell me when they’re arriving.

 

[Ngonyama]

I know the feeling…
Even planted a few hoping for a Swift tree to grow, but no luck
According to Bill from Swift, Nicolas Yale are going to be importing Swift to SA.
Unfortunately, nobody at Nicolas Yale can tell me when they’re arriving.

That’s good news .At least I have 3 boxes