The best way to use a speed strip is to lineup two-cartridges at a time and peel the strip away from them. You only need to insert them partially into the chambers. You will learn how far with practice.
Tuff Products suggest when using their QuikStrips to start the first two cartridges at the “top” of the strip into the chambers and then to peel the strip away to towards the “top.” After that insert the next two-rounds and peel the strip away towards the “bottom” of the strip. Keep loading two-at-a-time by peeling away towards the bottom of the strip. It seems to work slightly better this way instead of always working towards the top.
I then discard the strip (regardless if there are any rounds left in it) and return to the target. Ideally you never leave live rounds behind, you always retain them. But if you are in the middle of a shooting you need to get your weapon ready and up on target as quickly as possible. If the situation allows you to, recover the live rounds but pocket them away from any other full speed strips that you have on you. Partially loaded strips go into a different pocket, same thing for a partial magazine.
Also, practice loading your weapon (SAFELY) using snap caps, and hold the weapon up about shoulder high. You need to look at what you are doing but you need to keep your head up and eyes downrange where the threat is.
Practice does not make perfect. Only perfect practice makes perfect.
Vince Lombardi
Frank