With a 200 gr truncated wad cutter, like the famous H&G #68, try seating the bullet to just barely expose the full diameter shoulder. Only a 1/32" of lead needs to show. I use a taper crimp with just enough to remove the flare necessary to seat the bullet without shaving lead, plus a little more...just a little.
Leaving that little bit of full dia. shoulder of lead showing cushions the bullet as it enters the chamber in my thinking. The round should still pass the "plunk" test. Conversely, seating the bullet all the way so that it is flush with the case mouth never works for me. The 1/32" of lead exposed seating depth comes from Al Dinan, a "back in the day" master gunsmith and is currently used by every competition shooter I know.
If the 1/32" of lead showing seating depth method doesn't work, I seat it out just a bit more, allowing a bit more of the lead to show. It's still got to pass the "plunk" test however. If I can't get the seating depth right before the "plunk" test fails, I know that there is another factor at work: magazine lips, barrel ramp, something...In your case, you're working with a Kimber, right? Have you completed the Kimber recommended (totally BS in my opinion), 200-300 "break-in" rounds? You can always call their so-called customer service. If that bullet won't feed through the Gold Cup, then the load or seating depth are off.
Most commercial .45 ACP wadcutters now use a clone of the H&G #68 for the simple reason that they will feed through most any 1911 that doesn't have major issues. That Laser Cast 200 gr SWC looks like a H&G 68 to me, in a search I just did.
I'm not familiar with Titegroup in the .45, but I do know that WST, WSF, Unique, Win 231, HP 38, Bullseye, and Herco all work well at charge levels that produce 750 to 850 fps. If your Titegroup load isn't producing that velocity, you'll need to adjust it or pick another powder.
HTH's Rod
