longspurr
Member
I’m experimenting with 32 loads for my wife’s Ruger 32. As I go into light loads, “cowboy†loads, I run into 2 problems. I tried to load a wadcutter bullet in a 32 mag case but the Lee die set would not seat the wadcutter flush with the mouth of the case. I seated the bullet as deep as the die set allowed and tried to chamber the round. NO GO the bullet contacts the cylinder taper to the throat and stops short of seating the round fully by about 1/8th of an inch.
2nd I have some questions about short cases in long chambers
Does anyone else load for 32 mag using a wadcutter seated flush with the case mouth? What die set do you use?
Next, I have read on this site about people shooting 32 acp’s and 32 S&W in 32 mag chambers. This made me wonder about bullet jump to the cylinder throat. How far does the bullet have to jump from the end of the case to the cylinder throat?
I wondered if the bullet was supported or guided for this jump. Does it float along like a log in a stream? The other thing that happens is there seems to be nothing to seal the powder gasses behind the bullet while it is making its millisecond free float in the chamber. I looked up the various cases and their lengths that can be chambered in the 32 mag. I subtracted the case length from the 32 mag case to get the possible bullet jump.
The 32 S&W case length is .605 difference =.470
The 32 acp case length is .680 difference =.395
The 32 long case length is .916 difference =.159
The 32 mag case length is 1.075 difference =0
I just measured a 77 grain case bullet and the bearing surface is .27 in.
90 gr cast lead and the bearing surface is .20
Hornady 85 gr XTP and the bearing surface is .290
To me this looks like the bullets from short cases will have .125 to .200 in to float in the chamber with gas blowing past and unsupported.
We know people have been shooting 38’s in 357 chambers for a long time with great success. The difference in case length there is .125 in. similar to a 32 long in the 32 mag.chamber. If we chronograph 32 acp and S&W in guns chambered for them and then test the same ammo in a 32 mag I wonder what the difference will be. This may not be a good test due to the differences in barrels / cylinder gap / etc.
Does anyone out there have a chronograph that can test the 32 S&W and 32 acp in a 32 mag chamber??
2nd I have some questions about short cases in long chambers
Does anyone else load for 32 mag using a wadcutter seated flush with the case mouth? What die set do you use?
Next, I have read on this site about people shooting 32 acp’s and 32 S&W in 32 mag chambers. This made me wonder about bullet jump to the cylinder throat. How far does the bullet have to jump from the end of the case to the cylinder throat?
I wondered if the bullet was supported or guided for this jump. Does it float along like a log in a stream? The other thing that happens is there seems to be nothing to seal the powder gasses behind the bullet while it is making its millisecond free float in the chamber. I looked up the various cases and their lengths that can be chambered in the 32 mag. I subtracted the case length from the 32 mag case to get the possible bullet jump.
The 32 S&W case length is .605 difference =.470
The 32 acp case length is .680 difference =.395
The 32 long case length is .916 difference =.159
The 32 mag case length is 1.075 difference =0
I just measured a 77 grain case bullet and the bearing surface is .27 in.
90 gr cast lead and the bearing surface is .20
Hornady 85 gr XTP and the bearing surface is .290
To me this looks like the bullets from short cases will have .125 to .200 in to float in the chamber with gas blowing past and unsupported.
We know people have been shooting 38’s in 357 chambers for a long time with great success. The difference in case length there is .125 in. similar to a 32 long in the 32 mag.chamber. If we chronograph 32 acp and S&W in guns chambered for them and then test the same ammo in a 32 mag I wonder what the difference will be. This may not be a good test due to the differences in barrels / cylinder gap / etc.
Does anyone out there have a chronograph that can test the 32 S&W and 32 acp in a 32 mag chamber??