Originally Posted by
firefly1957
I have my grandfather's Winchester Model 1907 and have been reloading for it for about 20 years. Two deer have been taken during this time I have not recovered a single case fired while hunting and lose some no matter how careful when target shooting.
Last deer season I put .351 cartridges in a box next to some .223 Remington (5.56 NATO) and was surprised by how close they where the only difference was the missing semi rim of the .351.
After some research I trimmed some 223 cases to the length of a 351 primed them and run them in gun primers fired so I loaded a few with speer 160 half jacket bullets SWAGED TO .351 diameter they functioned fine in my rifle. I do not use heavy loads in these but just enough to eject and feed reliably, it seems that they actually head space more on ejector then case mouth as I cut a few short to test and they did work fine. I have used both swaged cast and jacketed .357 bullets (@.351 diameter) with good accuracy and feeding . I plan to use this gun and trimmed down .223 cases for pest control now that I have easy to make cases. I have .351 RCBS dies but have used 38/357 mag to load. I use lee factory crimp die to hold bullet firmly in place as no one puts crimp groove in the right place on their bullets for the 351 which is only .2 inches in case. I have loaded and fired some of these cases 11 times with no problems but remember the case volume is not the same as .351 so those loads may be too hot at maximum loads.
For deer hunting I use a Sierra 170 gr. JHC SWAGED TO .351 and 351 cases this bullet is very destructive and when I use the remaining 40 I have loaded (loaded 100 in 1995) I will switch to a non hollow point. Above hunting load shoots 1 inch 50 yd groups!