Tripp Research Magazine

This afternoon I fired 100 rds of Remington 230-gr ball through the little Kimber CDP using the Kimber mag and a new 7-shot mag from Tripp Research. Except for the finish, the mags are nearly identical:


Check out the "skirt" on the followers that prevents the follower from tilting forward or shifting forward:


Same patent number, too:


These mags are not identical; in the photo above, notice the different openings in the top of the tube: the Tripp is rounded and the Kimber is squared off.

The other mags that I tried last week, from Wilson Combat and Chip McCormick, do not have a "skirted" follower, and consequently on the last round the follower can tilt forward or shift forward (or tilt AND shift forward) and contact the frame. In an aluminum-framed gun, this can cause scratching. Is this a scratch? I don't know. The next two pictures were taken before the range session:


Here's an ECU:


The area of concern is the tiny triangle (about 2-mm on each side). It is found on the inside of the magazine well.

This last picture was taken after the session; I can't see any change in the little triangle:


Both magazines worked well today. There was a single failure to extract, on round #2 with the Tripp mag, and after that the gun ran perfectly, alternating the Tripp and Kimber mags every seven shots. After this I fired 50 rds of Remington 230-gr JHP, again without a single failure.

The NRA range was packed again today, a 45-minute wait.

I have more magazines on the way, from Wilson, Baer, Novak, Mec-Gar and Springfield.