Sporterizing the Mosin Nagant Part 5- Shortening the Barrel and Removing the Rear Sight Base

AMAZON Store: https://amzn.to/2H7Lq6Y
PATREON: https://www.patreon.com/iv8888
JOIN USCCA LEGAL SELF DEFENSE NETWORK: http://usccapartners.com/IV8888
CHECK OUT OUR MUSIC CHANNEL: https://www.youtube.com/c/Guitarsenal

Some of you may choose to shorten the barrel of your rifle. The M91/30 has a 1 in 9.5" right hand twist. The barrel on a standard NATO rifle in 7.62x51mm is around 21" so I decided to go with a barrel length of 22" The crown we cut is a 11 degree crown.

The chamber is in pristine shape and the lands and grooves are strong and pronounced on this rifle.

One thing I will note is that a counter bore is done to increase accuracy in a rifle that has excessive muzzle wear or has been clean carelessly. Before we shortened the barrel, the overall bore diameter slugged at 314" when started from the muzzle end. After shortening and recrowning the barrel, the overall slug diameter is now 312", which tells me that the muzzle had a little wear.

One good thing about having a shorter barrel too is the decrease in excessive barrel vibrations, which can have a negative effect on accuracy.

Many people build .308 WIN Sniper rifles with a 20" bull barrel with a 1-10" right hand twist and get excellent accuracy out to 1000 yards.

The standard service load of WW2 in the 7.62x54r utilized a fairly heavy bullet, so the 174 grain Sierra Matchkings I plan on shooting out of this rifle should perform well with the given barrel length and fast twist.
DISCLAIMER: Our videos are strictly for documentary, educational, and entertainment purposes only. All shooting is performed on state-approved firing ranges under the supervision of trained professionals. Imitation or the use of any acts depicted in these videos is solely AT YOUR OWN RISK. All work on firearms should be carried out by a licensed individual and all state and federal rules apply to such. We (including YouTube) will not be held liable for any injury to yourself or damage to your firearms resulting from attempting anything shown in any of our videos. We do not endorse any specific product and this video is not an attempt to sell you a good or service. We are not a gun store and DO NOT sell or deal in firearms. Such a practice is heavily regulated and subject to applicable laws. We DO NOT sell parts, magazines, or firearms. We are not instructing our viewers on how to modify firearms, accessories or otherwise to change their basic legal function. These videos are free to watch and if anyone attempts to charge for this video notify us immediately. By viewing or flagging this video you are acknowledging the above.

Fair Use: In the rare instance we include someone else’s footage it is covered in Fair Use for Documentary and Educational purposes with the intention of driving commentary and allowing freedom of speech.