PDA

View Full Version : 420 gr 457193 bv COAL problems


4719dave
10-15-2011, 08:33 PM
Okay..1ST 45/70 reloads .The boolits i casted are 50/50 stick on ww and clip on .ww
Brass was all trimmed to 2.100
MY mold says 457193BV
287
UA
The problem im having is the aol All my books say 2.550 .When i seat these in the crimp grove and crimp the boolit there 2.595 . .I've run them through my 1895 GST and they cycle fine . better to ask first thanks to all you guys!!!!!!!!!!!!!!!!!!!!
TXGunNut
10-15-2011, 08:47 PM
If it works for you, great. Lyman's OAL length of 2.550 puts the case mouth very near the edge of the top driving band for me and I think this boolit was not designed with a crimp groove. I'm using a very light roll crimp but my taper crimp die just arrived this week, can't wait to give it a try in the Guide Gun. JMHO, of course, YMMV.
white eagle
10-15-2011, 09:10 PM
set the o/a for the gun first
the manual listings are references
each guns chambers are different but manuals need to assume their
references will work in every firearm
TXGunNut
10-15-2011, 09:45 PM
set the o/a for the gun first -white eagle


Yes, of course. In my Guide Gun Lyman's published OAL happens to work quite well with my Lyman 457193. Usually doesn't work that way for me either.
4719dave
10-15-2011, 11:26 PM
thanks guys im headed to the web in am will see
w30wcf
10-16-2011, 08:03 PM
Dave,
The 457193 was originally designed for the 1895 Marlin 45-70 and was to be crimped over the front driving band.

w30wcf
4719dave
10-16-2011, 08:12 PM
well , should i pull these ? I them loaded with 12.0 unique they cycle fine with NO MARKS on the boolits ,
bigted
10-17-2011, 12:01 PM
heck no dont pull em....just shoot em if they run thru yer gun fine. nothing wrong if your coal works thru yer action.
Crawdaddy
10-17-2011, 04:20 PM
Shoot 'em they are fine. I have the same issue with my 1895/450 Marlin. If they cycle they are fine.
4719dave
10-17-2011, 10:22 PM
Thanks guys love this place
TXGunNut
10-17-2011, 11:10 PM
Main thing is that they cycle OK, I think that's part of the reason for the 2.550 OAL. Mine will cycle cartridges a bit over 2.550, just not much. I don't think .45-70 boolits much enjoy a jump from the case mouth to rifling but we have to get them in the chamber, right?

Nice Truck!