please just listen to us
as a young shooter id again agree with the others, put that gun away till your ready for it , its not a "starter gun", it was a full military service battle rifle, and is in no way suited to your experience level. i started on 22lr at age 5,and i now shoot 308 and i personally dislike 30 06 when shooting, i have less control , than on my 308 rifles.
you first need to do a few shooting classes that introduce you to new calibers
till you find that one or two you can handle and be accurate with. there is no shame starting at the beginning and id have much more respect for more shooters who do the same.
its the same as if i gave you 1000cc motorcycle and expected you to be a motogp racer, when you should be on a 250 cc bike. its not within reason that i should expect you to properly control the device of that caliber, if you havent yet learned to control the basic system. following?
we are not trying to be mean , but to guide you with knowledge and experiences we ourselves have learned, and as you came to this forum requesting the knowledge , isn't it in your best interest to listen ?
That said ....
to help control the mosin i can state the following:
mosins are a higher caliber rifle and can kick
(id recommend the
recoil pad that replaces the but plate , just two easy screws and quick install to reduce recoil looks like a rubber L shaped pad with 2 holes)
the other is more of a technique, using the sling firing technique , i recommend you watch a few youtube videos demonstrating the proper method which wraps one are around sling for a more stable shooting position. this was the proper military method to firing the rifle
Alternative caliber to look into
-223, 22 (LR)