large vs. small flash holes.
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large vs. small flash holes.
I've noticed a large variation in primer flash holes in my mixed brass.
anyone experiment with what's the better choice.
I know when I'm making up .32 s&w blanks for my son, I have to drill the holes larger to limit primer set back.
any opinions out there?
Jim C
anyone experiment with what's the better choice.
I know when I'm making up .32 s&w blanks for my son, I have to drill the holes larger to limit primer set back.
any opinions out there?
Jim C
james r chapman- Admin
- Posts : 6375
Join date : 2012-01-31
Age : 75
Location : HELL, Michigan
Re: large vs. small flash holes.
There was an old thread about this a year or 2 ago...
Some people said it's a big deal so I tested it out with my machine rest.
I usually get just under 3" groups with my mixed brass 200gr LSWC loads over 3.8gr BE.
I dug out 5 Winchester cases with large holes and 5 Winchester cases with the small holes and shot those as a group. It came out just under 3" and I couldn't tell which holes were from which flash holes.
I then dug out all different headstamps looking for different flash hole sizes and other anomalies. I grabbed a couple split cases and loaded 10 of those.
It came up to be a 3" group....nothing noteworthy. I had a helper watching in the scope when I let the split cases fly---he said they went right through the middle of the group.
.45ACP is very forgiving...I wouldn't worry too much about brass unless you always hold 9 ring or better on the long line.
Some people said it's a big deal so I tested it out with my machine rest.
I usually get just under 3" groups with my mixed brass 200gr LSWC loads over 3.8gr BE.
I dug out 5 Winchester cases with large holes and 5 Winchester cases with the small holes and shot those as a group. It came out just under 3" and I couldn't tell which holes were from which flash holes.
I then dug out all different headstamps looking for different flash hole sizes and other anomalies. I grabbed a couple split cases and loaded 10 of those.
It came up to be a 3" group....nothing noteworthy. I had a helper watching in the scope when I let the split cases fly---he said they went right through the middle of the group.
.45ACP is very forgiving...I wouldn't worry too much about brass unless you always hold 9 ring or better on the long line.
Rob Kovach- Admin
- Posts : 2692
Join date : 2011-06-13
Age : 51
Location : Brooklyn, WI
Re: large vs. small flash holes.
OH, I hold there, the shots just don't go there, lol
thanks for the answer...
I'll just make sure the holes are open then...
thanks for the answer...
I'll just make sure the holes are open then...
james r chapman- Admin
- Posts : 6375
Join date : 2012-01-31
Age : 75
Location : HELL, Michigan
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