lar45
07-12-2006, 10:31 AM
How deap can a bullet be seated. (depends on how much weight is in the nose...)(excatly, but how about a number/ measurement?)
anyway, I took a few 230 BD acps and seated them deap in increments until I started getting a bulge, then measured it to get an idea of what base deapth would still funtion in a 45 acp.
I have a Star PD, AMT Longslide hardballer and M-98 16" barrel to test in.
I tried some WW, R-P and TZZ 87 and 93 cases.
I thought the TZZ Israeli military cases would be the worst as they have the least case capacity. They ended up being the best for deap seating a bullet.
The 230 BD acp is .6" long with a square base. The cases are .9" ish
The chamber on my Star PD is about .478" ID, the M-98 is .477", I didn't take the AMT down to measure it.
with the WW case, I seated it to 1.12"-and got a bulge ring of .471", 1.098-.473, 1.07-.474, 1.04-.476, 1.02-.478 and it didn't chamber on the last one.
So I could have the base in the case about .460" and still have it function.
R-P case, 1.07-.476", 1.04-.478 NO-GO I should do again and get more readings in between.
TZZ 87 case, 1.1-.4705", 1.068-.472, 1.035-.474, 1.02- .475, 1.004-.476, .990-.477, .980-.478 NO-GO
TZZ 93, 1.018-.476, 1.00-.478 NO-GO
So with the TZZ 87 cases I can have the base of the bullet about .510" in the case and still have it chamber.
Next thought, existing 45 bullet molds with a gas check. Now I can just measure to the bottom of the bottom drive band?
I have the Lee C452-300 RF that is .763" long and .65" to the bottom of the drive band. When seated to 1.225 OAL it would just fit in the magazine. Almost to the top crimp groove. Next I'll have to see how it shoots without a gascheck?
I also have a MM 340gn 90% nose that is .833" long and .730" to the bottom drive band. When seated to 1.19" it will fit the magazine and feed fine.
Now I'll have to spend some time with quickload and order a heavier recoil spring for the AMT. I don't think I'll even try pushing the Star PD with the aluminum frame and all.
anyway, I took a few 230 BD acps and seated them deap in increments until I started getting a bulge, then measured it to get an idea of what base deapth would still funtion in a 45 acp.
I have a Star PD, AMT Longslide hardballer and M-98 16" barrel to test in.
I tried some WW, R-P and TZZ 87 and 93 cases.
I thought the TZZ Israeli military cases would be the worst as they have the least case capacity. They ended up being the best for deap seating a bullet.
The 230 BD acp is .6" long with a square base. The cases are .9" ish
The chamber on my Star PD is about .478" ID, the M-98 is .477", I didn't take the AMT down to measure it.
with the WW case, I seated it to 1.12"-and got a bulge ring of .471", 1.098-.473, 1.07-.474, 1.04-.476, 1.02-.478 and it didn't chamber on the last one.
So I could have the base in the case about .460" and still have it function.
R-P case, 1.07-.476", 1.04-.478 NO-GO I should do again and get more readings in between.
TZZ 87 case, 1.1-.4705", 1.068-.472, 1.035-.474, 1.02- .475, 1.004-.476, .990-.477, .980-.478 NO-GO
TZZ 93, 1.018-.476, 1.00-.478 NO-GO
So with the TZZ 87 cases I can have the base of the bullet about .510" in the case and still have it chamber.
Next thought, existing 45 bullet molds with a gas check. Now I can just measure to the bottom of the bottom drive band?
I have the Lee C452-300 RF that is .763" long and .65" to the bottom of the drive band. When seated to 1.225 OAL it would just fit in the magazine. Almost to the top crimp groove. Next I'll have to see how it shoots without a gascheck?
I also have a MM 340gn 90% nose that is .833" long and .730" to the bottom drive band. When seated to 1.19" it will fit the magazine and feed fine.
Now I'll have to spend some time with quickload and order a heavier recoil spring for the AMT. I don't think I'll even try pushing the Star PD with the aluminum frame and all.