Steve,stevie_d_64 wrote: You must have developed some loads that were a little hotter than the factory stuff I found...I may do some experimenting later on down the road with that...Got to shoot some of this to get a collection of brass to reload...
I have a box of Winchester 300gr. "train-stoppers" that are supposed to put out at about 1300fps...Which is what I thought was about an average velocity for this caliber...
The energy into the target is what impresses me...Obviously a heavy punch...
I have seen some pics of a 405gr. punching holes (groups) of about 5" at 200 yards...That over at leverguns.com
Almost brought a tear to muh eye...
The 1884fps average was the starting load from a Speer datasheet.
I have found, in a couple of load manuals, that there are three levels of
loads for the 45/70.
Our Marlins fall into the middle group with max pressures at about 28,000 psi.
Factory loads may be accomodating the lower group with a max of 21,000psi.
The top group goes up to the 35,000psi level.
Given the thumping that I get from my starting load I am not interested in testing the higher limits.
Yours should be quite comfortable to shoot at 1300fps.
Kind Regards,
Tom