flyandscuba
Master
This project started with a base Rock Island wide body 1911 (using P14) type hi-cap mags in .45 ACP. This gun was chosen because the design did not use a ramped barrel - allowing the installation of a Clark Custom or Johnny Rowland conversion kit. However, I wanted to experiment a bit. Having borrowed a .45 chamber reamer from a local gunsmith - I decided to simply ream the stock .45 ACP chamber to .460 Rowland and try to make the creation work WITHOUT a compensator! To do so, I installed a 28 pound recoil spring, extra power firing pin spring, and a 32 pound hammer spring - along with a flat bottom firing pin stop to provide a tougher surface for the recoil to overcome as the pistol cycled. Without a compensator, the slide and barrel needs to remain in lock-up until the bullet exits the bore. These added spring weights and the firing pin stop give it the dwell time necessary to do so. Recoil was no worse to me than my converted Glocks - or even a 10mm Glock 20 - to me. The pistol functioned well with 185 gr bullets as long as only 10 rounds were loaded into the magazine. The heavy 255 gr hard cast loads would not cycle - but nose down into the magazine. I was using stock magazine springs - so I have ordered extra power magazine springs from Wolff in hopes that it will solve the feed problems. Spent cases were ejected about 3 feet away - so I might be able to go with a lesser recoil spring weight. Study of the spent cases reveal no bulging, splitting, or unusual primer character. So, for a first range session - I think this creation was a success...
Attachments
Last edited: