Testing Rocky Mtn cases in NEF.Got 1850 fps
with 125 gr AA 1680 and 132gr of RE-7.
And long barrel would get over 2000.
Cases are 2.9 after 3 firings. AA 1680
load had .135 card wad and 2 1/2 in lubed felt
wads, and RE-7 load had same card and
a 1/2 and a 1/4 lubed wad. Re-7 less dense.
Base expansion ahead of thick base was
.002 to .003 and resized without huge effort.
The base is .300 thick, case has shotgun primers. By the way I put primers in with
bmg primer post. Works good. Next we cut back
some cases for the 87 levergun.About same
loads used in NEF minus wads worked.
I also felt now that having found loads that
get velocity without a huge expansion to
the turned cases(that can't take pressures like
our cases built from bmg brass), that good low base plastic
would do the same velocity, in strong alloy
barreled guns, so I tested plastic with 600 gr
hardened Dixie slugs, the last 3 days along
with turned Rocky Mtn cases, and a good result.
Plastic does as good as turned case loads in NEf.
And 100 gr Re-7 in 87 gets 1600 in plastic case.
We load plastic in 87 down due to base expansion
just ahead of rim in two spots due to extractor
cutouts. With heavy barrel we will change cutouts.
If it had long heavy barrel you could get over 2000.
The plastic will get all the potential that NEF
and 1887 with long heavy barrel added
can deliver with RE-7 type loads. And plastic is
a 100 times more available.And with regular primers so
gun doesn't have to be worked over for big primers.Ed