abosely
04-20-2009, 02:11 PM
I'm trying to learn, for my application if Cast GC or Cast PP Boolits would better.
I don't know if this info would have a bearing on my options or not but here goes..
The rifles will be a 404 Jeffery (.423 cal) with 1 in 14" twist and 9.3x62 (.366 cal) with 1 in 12" twist.
Standard J Boolits loads are a 400 gn @ 2250-2350 fps in the 404 Jeffery and 286 gn @ 2250-2350 fps in the 9.3x62.
In the 404 I would like to use a 300 to 350 grain cast boolit at 2200-2300 fps and in the 9.3x62 a 200-230 grain cast Boolit at 2250-2350 fps.
Planning on using LBT SP molds. I'll Firelap, slug & measure the bores and make a lead throat slug so Veral can make the molds to fit each rifle.
So the questions,
If I start with a bore cleaned to bare metal and fire some J Boolits then fire some GC Boolits of the correct size and hardness at at 2250-2350 fps without cleaning the bore.
Will I get bad leading and no accuracy?
What would happen if I do the above and then switch back to some J Boolits?
The reason for not cleaning the bore is not laziness but would be in the field and not able to
clean between switching from J to GC Boolits.
Would PP Boolits work or work better for the above application?
Or, when switching from J Boolits to CG or PP Boolits or vice versa I will have to clean the bore no matter what or I'll get leading/fouling and no accuracy?
If this can be done with PP Boolits, I'll go to that forum learn about PPing.
If this can be accomplished with GC Boolits I would prefer since GC Boolits will be a little less labor intensive.
I've been reading through the old posts to try and find the answers, but have been unsuccessful
so far.
Hopefully there are not stupidly basic questions.
Allen
I don't know if this info would have a bearing on my options or not but here goes..
The rifles will be a 404 Jeffery (.423 cal) with 1 in 14" twist and 9.3x62 (.366 cal) with 1 in 12" twist.
Standard J Boolits loads are a 400 gn @ 2250-2350 fps in the 404 Jeffery and 286 gn @ 2250-2350 fps in the 9.3x62.
In the 404 I would like to use a 300 to 350 grain cast boolit at 2200-2300 fps and in the 9.3x62 a 200-230 grain cast Boolit at 2250-2350 fps.
Planning on using LBT SP molds. I'll Firelap, slug & measure the bores and make a lead throat slug so Veral can make the molds to fit each rifle.
So the questions,
If I start with a bore cleaned to bare metal and fire some J Boolits then fire some GC Boolits of the correct size and hardness at at 2250-2350 fps without cleaning the bore.
Will I get bad leading and no accuracy?
What would happen if I do the above and then switch back to some J Boolits?
The reason for not cleaning the bore is not laziness but would be in the field and not able to
clean between switching from J to GC Boolits.
Would PP Boolits work or work better for the above application?
Or, when switching from J Boolits to CG or PP Boolits or vice versa I will have to clean the bore no matter what or I'll get leading/fouling and no accuracy?
If this can be done with PP Boolits, I'll go to that forum learn about PPing.
If this can be accomplished with GC Boolits I would prefer since GC Boolits will be a little less labor intensive.
I've been reading through the old posts to try and find the answers, but have been unsuccessful
so far.
Hopefully there are not stupidly basic questions.
Allen