You are pushing the top cartridge into the bottom of the carrier, most load full then remove one cartridge. Try pulling the carrier back and locking it, insert the mag then trip the bolt release, it may be easier.
The 6.8 is the fastest growing cartridge and #1 choice for hunting deer and hogs with an AR15.
To view links or images in signatures your post count must be 10 or greater. You currently have 0 signatures.