Also, have you ever though about the fact that the BRASS isn't designed for those pressures, either?
Actually, Winchester brass,the thinnest of 45-70 brass,was tested by George Weber at Hodgdons to 70,000 and they just fell out of the SAAMI barrel.Brass/Primers won't tell you when your getting to high in pressure..
The action is the first to go in a marlin.The man I quoted tested 1-Marlin and two Win '94's to destruction seeing if they would handle the 62-65,000 PSI of the 454 Casull.The Marlin was the first to go with less than 20 rounds with the Winchester next at somewhere around 40 rounds in the 60-62,000 PSI range...
If one wants more than the 45-70/450 Marlin can do,buy a 458 Win Mag or have the action beefed by a pro.
Jayco
