Back in 1998 I bought a new Win 94 AE Big Bore carbine for the 356 Win cartridge.  The 356 is the same case as the 358 Win except with a rim and a shorter loaded OAL to function in the M94.  It is loaded to the same pressure level as the 358 which gives considerable more firepower than the 30-30 class of cartridges. Like the 358 it can also be shot with any  38/357  handgun bullet and is a favorite diameter for cast bullet shooters.

This model has the crossbolt safety and rebounding hammer that replaced the traditional halfcock hammer position as the safety a few years earlier.  The Big Bore model has a beefed up receiver and substantially heavier barrel than the standard carbine which contribute to the accuracy level this model is noted for as well as cosmetic enhancements like checkering and nice blueing not usually found on the standard carbines. 

For a period of years there were no issues then at some point I began getting misfires from light primer strikes with about 5 to 10 per 100 shots requiring a second strike to go bang. Reloading equipment and techniques hadn't changed and looking around there was evidence of others experiencing it as well. So over the years since I have periodically researched for a solution  but had not taken any action except to shoot it less -.which is no fun.

Recently I again reviewed the topic looking for anything new but came away with a bit more of the same.  Many  have completely replaced the hammer spring mechanism with old model parts and disengaged or removed the crossbolt or tang safeties on even later models to revert back to the halfcock safety. But those used parts had dried up a while ago and new are not available probably for liability concerns. Others resort to using "soft primers" with Federal being mentioned most or even large pistol primers.  But I was looking for a permanent solution with 100% reliability using any primer and no special primer pocket condition - I have rarely cleaned them over the years.