I’m a 13F and want to reclass to either 13M or 13J. What are the Pros and cons?

I can tell you that AIT are around a similar length and that 13M are only at HIMARS locations, which are very limited, but 13J are everywhere we have Artillery, which also is a larger MOS meaning better promotions

I find 13J boring, no kicking in doors or being attached to infantry companies. You will be working with computers as FDC (fire direction center) and usually located around COC ( Command Operations Center) or TOC (tactical). I prefer 13F you go practically anywhere from artillery units, infantry units, SOF or Ranger regiments. Personally I find 13F MOS to be more exciting, but 13J had bonuses. 13F was a star MOS when it was time for me to go to BLC; a leadership course for promotion.

13m duty station locations are Fort sill, Fort Bragg, JBLM, Camp Casey South Korea, and Germany.

13m is definitely boring nothing compared to 13B or 13F definitely th two are more exciting MOS. What are you trying to do in the Army. Just take in consideration that majority of 13m's get stuck in the black hole of fort sill and end up rotating to Korea every other year. 13m is a long range fire support but for some reason the units on fort sill act like they're convoy trucks that are patrolling MSR's in Iraq or Afghanistan. Kind of difficult to chase the enemy in huge track vehicles.
But like I said what are you trying to accomplish in the Army.?

AIT refers to the training program for military personnel to learn a specific military function or specialty. This training period may vary depending on the field of specialization and the needs of the military unit. It can usually last from a few weeks to a few months. Source: https://canlitv.center/hd4

13M (Multiple Launch Rocket System (MLRS) Crewmember) and 13J (Fire Control Specialist) are both artillery-related MOSs, but they have different responsibilities and job duties.
13M: As an MLRS Crewmember, your main responsibility is to operate and maintain the MLRS weapons system, which involves loading and firing rockets. You will also perform maintenance on the vehicle and the weapons system, and you may be responsible for driving and navigating the vehicle. AIT for 13M is approximately 9 weeks long.
13J: As a Fire Control Specialist, your main responsibility is to calculate and transmit firing data to artillery units, including determining the target location, distance, and elevation. You will use computer systems and other equipment to calculate firing data, and you will also assist in the operation and maintenance of communication systems. AIT for 13J is approximately 14 weeks long.
In terms of day-to-day responsibilities, both 13M and 13J require attention to detail and the ability to work as part of a team, as well as the ability to work under pressure in a high-stress environment. However, the specific tasks and duties for each MOS will vary.
Ultimately, the decision between 13M and 13J will depend on your personal interests, skills, and career goals within the military. It may be helpful to speak with current or former members of both MOSs to get a better understanding of the day-to-day responsibilities and what each MOS can offer in terms of career advancement and opportunities.
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