So my first trip to the range with my new Kahr had mixed results. I won't rehash it all here, but for background see this thread:
http://www.thehighroad.org/showthread.php?p=9347966#post9347966
Suffice it to say that I had major issues with Silverstate 230 LRNs going in to battery and failing to feed at an oal of 1.265, whereas I had much better results with xtreme 230 plated LRNs at an oal of 1.260.
I thought the problem was that I had not sufficiently crimped the silverstates. Wrong!
The throat on a CW45 is very short. It was failing to go in to battery because the bullet was contacting the rifling. Granted, 1.265 is long, but the published max oal for 45acp is 1.275.
I colored and plunk tested:
Silverstate 230 LRNs at 1.265
Xtreme plated RNs at 1.260
Zero 230 FMJ RN at 1.260
Result:
the Silverstates lodged on the rifling. I had to gently leverage off the case rim to get it out of the chamber. The coloring indicated that the bullet was contacting the rifling on the leading edge of the bearing surface.
the xtremes passed the plunk test. no bullet/ rifling contact
The zeros made contact with the rifling, but not as severely as the silverstates. The coloring indicated that the contact was near the rear of the ogive.
Note to self: every reloading manual says to work up new loads every time you change a component (this includes the firearm!). Each of these bullets has a slightly different ogive profile, and the Kahr has a shorter throad than the PT1911. Self, you are a knucklehead :banghead:
I'm gonna test the xtremes over 4.9grains of 700x loaded to a length of 1.25. I'll post the results.
http://www.thehighroad.org/showthread.php?p=9347966#post9347966
Suffice it to say that I had major issues with Silverstate 230 LRNs going in to battery and failing to feed at an oal of 1.265, whereas I had much better results with xtreme 230 plated LRNs at an oal of 1.260.
I thought the problem was that I had not sufficiently crimped the silverstates. Wrong!
The throat on a CW45 is very short. It was failing to go in to battery because the bullet was contacting the rifling. Granted, 1.265 is long, but the published max oal for 45acp is 1.275.
I colored and plunk tested:
Silverstate 230 LRNs at 1.265
Xtreme plated RNs at 1.260
Zero 230 FMJ RN at 1.260
Result:
the Silverstates lodged on the rifling. I had to gently leverage off the case rim to get it out of the chamber. The coloring indicated that the bullet was contacting the rifling on the leading edge of the bearing surface.
the xtremes passed the plunk test. no bullet/ rifling contact
The zeros made contact with the rifling, but not as severely as the silverstates. The coloring indicated that the contact was near the rear of the ogive.
Note to self: every reloading manual says to work up new loads every time you change a component (this includes the firearm!). Each of these bullets has a slightly different ogive profile, and the Kahr has a shorter throad than the PT1911. Self, you are a knucklehead :banghead:
I'm gonna test the xtremes over 4.9grains of 700x loaded to a length of 1.25. I'll post the results.