The inertia puller I have (some cheap generic brand by Frankford Arsenal), has no problem with 375 HH length carts of COL of 3.6"- so dunno? It will even handle a slightly longer cart if needed. Once the bullet pops out I just hold the part of the puller with all the powder and bullet over a container and invert it while catching the bullet in my fingers like a sieve. The only marks on the bullet are superficial from the neck contact. The bullet is good for another go. It may help for extra length, if needed, to secure the collet on the case body ABOVE the belt (as shown in the following pics) then secure the collet really well by a good tightening of the locking nut. One or two good raps on a solid metal surface usually pops the bullet out. You can easily watch the process through the transparent walls of the puller body. Pics are of a 450 Watts with COL of 3.6"
