Is the Crosman 1377 or 1322 capable of 100 meter LR shooting?

I just finished putting together a Crosman 1377 with a Marauder 26" barrel, steal breach and rifle stock and I was sighting it in today and I could easily hit cans and water bottles at 40 meters which is the limit of my backyard range. I'm reasonably sure the longer barrel increased the velocity and reach. Is it capable of reaching 100 meters without further modifications? I also shoot a 1322 with 14.6" barrel, steal breach and rifle stock and I may change the barrel to something in the 18-24" range if that means more velocity and more reach. I'm not yet into power mods but I am researching them. I'm retired and only rediscovered the joys of airgunning in 2021 due to the CCP pandemic and retirement meaning I have lots of time on my hands. I used to shoot Crosman airguns back in the 80's but the availability of custom parts was scarce back then. I've purchased parts for my guns from around the world thanks to the internet and learning about the hobby on YouTube and on this forum.
 
Will it get to 100 yards yes, will you be able to hit anything possibly. I remember pulling off some long range shots with my Benjamin and Sheridan as well but it was a hit and miss thing most of the time as there was a huge holdover and the slightest breeze would blow things way off course.

You can increase the power on the guns by increasing the valve volume, just cut a couple of threads off of the valve cap on the 1322, but then it requires more pumping and unless you beef the guns up at the pump pin area you will tear them up. 

You can purchase a metal barrel band, metal breech, flat top valve and piston and other aftermarket stuff for the 1322.

Mac1 used to do the hop ups for the rifles.

Crosman parts

https://alliancehobby.com/masterclass.htm

https://cothranmachine.com/crosman-parts/

https://maverickcustomairguns.com/product-category/crosman-upgrade-parts/crosman-1377-1322-parts/

http://mountainaircustomairguns.com/faq/

https://onlinestore.magnumairpower.com/t/custom-upgrade-parts

https://ssl.tko22.com/


 
No is a easy answer....I am sure somebody will say sure you can,like a 50 gallon drum,LOL..

A longer barrel is just a small equation,you need more power...you would be lobbing your shoots without it....

Be happy to stay in a 1/2" at 25 yards,1" in 50 yards then go from there

As has been said, much easier to accomplish your goals with the right tool....