goodgrouper
Well-Known Member
Re: Bill & Lerch\'s \"APS Xtreme Range 338 Allen Mag\"
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With live fire fireforming loads, it is nearly impossible to get pressures high enough , quickly enough to prevent these pressure dents. Believe me I have tried. Even used MUCH faster powders and lighter bullets. When you have 155 grains of usible powder capacity, live fire fireforming has many problems and is not very practical.
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That may be and makes good sense. I think selling your cases already pre-fireformed would be a great way to do it. You could have a scrap action and a burnout barrel set aside for this task and then your customers wouldn't have to use up precious barrel life doing it themselves.
Unc B and I have done this before with a scrap model 7 barrel and it worked great.
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I do hear what you are saying on the bead blasting effect of corn meal and there may be some potential there but I have never seen it in my rifles. These are not rifles where you will be fireforming 100 rounds of brass all at once. At least that is not my design purpose. 50 max is plenty.
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This might be a fun little experiment for you. On a piece of scrap metal, load your beadblaster full of cream of wheat and see what it turns out. It is cheap media!
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This is the BAT 2"x 10" not the 8.5" that you used on the MOAGs. It has a huge thread length and Bruce at BAT said it would handle a 40" 1.750" diameter straight cylinder barrel.
That is what I have on my Black Sunshine, totally freefloated and have never had any problems at all with consistancy
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That is good to know. The next rifle project I will do is a 3" diameter barrel at 40" long and I was planning on using that 10" bat to thread into.
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Anyway, from my borescope inspections of my own personal barrels
[/ QUOTE ]
Speaking of this, how many rounds are down the Sunshine now and how does it look? Anywhere near the MOAG condition?
[ QUOTE ]
With live fire fireforming loads, it is nearly impossible to get pressures high enough , quickly enough to prevent these pressure dents. Believe me I have tried. Even used MUCH faster powders and lighter bullets. When you have 155 grains of usible powder capacity, live fire fireforming has many problems and is not very practical.
[/ QUOTE ]
That may be and makes good sense. I think selling your cases already pre-fireformed would be a great way to do it. You could have a scrap action and a burnout barrel set aside for this task and then your customers wouldn't have to use up precious barrel life doing it themselves.
Unc B and I have done this before with a scrap model 7 barrel and it worked great.
[ QUOTE ]
I do hear what you are saying on the bead blasting effect of corn meal and there may be some potential there but I have never seen it in my rifles. These are not rifles where you will be fireforming 100 rounds of brass all at once. At least that is not my design purpose. 50 max is plenty.
[/ QUOTE ]
This might be a fun little experiment for you. On a piece of scrap metal, load your beadblaster full of cream of wheat and see what it turns out. It is cheap media!
[ QUOTE ]
This is the BAT 2"x 10" not the 8.5" that you used on the MOAGs. It has a huge thread length and Bruce at BAT said it would handle a 40" 1.750" diameter straight cylinder barrel.
That is what I have on my Black Sunshine, totally freefloated and have never had any problems at all with consistancy
[/ QUOTE ]
That is good to know. The next rifle project I will do is a 3" diameter barrel at 40" long and I was planning on using that 10" bat to thread into.
[ QUOTE ]
Anyway, from my borescope inspections of my own personal barrels
[/ QUOTE ]
Speaking of this, how many rounds are down the Sunshine now and how does it look? Anywhere near the MOAG condition?
