I chrony'd a couple loads through the factory repaired model-48 today. It has a 4" medium-taper barrel. The chambers can be a little sticky, which I heard (here?) was common with the 48. Dunno if that means the chambers are generally too large, small, or rough. They certainly didn't feel small when I rattled rounds around in them.
I used an Alpha Master Chrony about 8ft from the muzzle. Temp was about 70deg.
* Winchester Dynapoint 45gr (the ugly bullet): 1159fps avg, ES 129, SD 42
* CCI Maxi-mag 40gr HP: 1370fps avg, ES 86, SD 44
Unfortunately I didn't do any accuracy testing as I was occupied with handloads for another gun.
I was hoping the Winchester 45gr's would fare better in the short barrel, figuring trading mass for velocity would be ok in a handgun. Instead they kinda suck. I can get 1106fps from CCI Velocitors in a 4" revolver, and that's a .22LR. Why waste maggies for the same performance, especially for defense or field shooting where you'll deafen yourself with the extra powder.
The CCI's surely had a little more pop to them, and 1370fps is squarely in magnum handgun territory, giving a solid 23% more velocity than the nearest .22LR competition (the same Velocitors). That translates to quite a bit more KE, and since the .22Mag is generally aimed at shooting non-paper targets, I guess this is a decent go-to load. It's harder to extract than the Winchester.
This pretty much indicates what is already known - that the .22mag in a handgun is neither fish nor foul. At 6" of barrel it really starts to turn into something, but shorter than that it's very inefficient compared to a .22LR. Yes, you WILL get more performance, but it's a weak trade for the extra noise without tuned ammunition. Too bad it can't practically be handloaded. (Yes, I know it's been done).
I'd like to get a .22LR cylinder for this handgun, which I think would get a lot more use.
-Daizee
I used an Alpha Master Chrony about 8ft from the muzzle. Temp was about 70deg.
* Winchester Dynapoint 45gr (the ugly bullet): 1159fps avg, ES 129, SD 42
* CCI Maxi-mag 40gr HP: 1370fps avg, ES 86, SD 44
Unfortunately I didn't do any accuracy testing as I was occupied with handloads for another gun.
I was hoping the Winchester 45gr's would fare better in the short barrel, figuring trading mass for velocity would be ok in a handgun. Instead they kinda suck. I can get 1106fps from CCI Velocitors in a 4" revolver, and that's a .22LR. Why waste maggies for the same performance, especially for defense or field shooting where you'll deafen yourself with the extra powder.
The CCI's surely had a little more pop to them, and 1370fps is squarely in magnum handgun territory, giving a solid 23% more velocity than the nearest .22LR competition (the same Velocitors). That translates to quite a bit more KE, and since the .22Mag is generally aimed at shooting non-paper targets, I guess this is a decent go-to load. It's harder to extract than the Winchester.
This pretty much indicates what is already known - that the .22mag in a handgun is neither fish nor foul. At 6" of barrel it really starts to turn into something, but shorter than that it's very inefficient compared to a .22LR. Yes, you WILL get more performance, but it's a weak trade for the extra noise without tuned ammunition. Too bad it can't practically be handloaded. (Yes, I know it's been done).
I'd like to get a .22LR cylinder for this handgun, which I think would get a lot more use.
-Daizee