This is a discussion on What is the max range of the M14, M25? within the The M14 forums, part of the M14 M1A Forum category; What is the max range of the M14, M25 with a 175 grain round without overstressing the gas system? I have been told that the ...
What is the max range of the M14, M25 with a 175 grain round without overstressing the gas system? I have been told that the rifle was built for the 600 yard range and that it won't shoot 1000 yards consistent without over stressing the gas system of the weapon. Let's say a LRB reciever and 22" krieger heavy barrell is used and what does it mean when I'm told the barrell is short chambered?
long range shooting has nothing to do with the stress the reciever or any other part of the gun goes through. If you use factory ammo no bigger than 180 grain the gas system will be fine. If you bigger rounds a good 'smith needs to look over the rifle. if you're handloading for your rifle then follow the SAMMI guidelines and dont excede 180 grain rounds.
Now for the second part. the max effective range of a 7.62 projo is (i think) about 1500 yards before it wobbles to much to get a hit. becuase the weapon is semi-auto it is less accurate than a bolt, therefore the effictive range goes down.
High-power shooters have won at Perry with M-14 varients shooting 1000 yards. The system will support you if you are good enough
well. The maximum effective range of a M14 (according to Unca Sam) is 460 meters. Which would be with standard NATO ball.
I believe the M21 was rated to 690 m (750 yd).
The M25 was rated effective to 900 m (983yd).
There are more variants (DMR, etc) but I think the 983 yards on the M25 is the longest effective range listed.
I think (and here I am out on a limb here) that short chambered means that the chamber is not cut all the way (this would be on a non-chrome lined barrel) so that the armorer / gunsmith who assembles the rifle can finish reaming it to exact tolerances for the round in question...
The max effective range of the M14 (rack grade with iron sights and using M80 with battlesight zero) is 460 meters (500 yards). The M21/M25 has a max effective range of 900 meters (1,000 yards) with M118, M118LR or M118 Special ball. Given the 100+ fps less velocity with these 22" barreled rifles vs the M24/M40A1/2/3s with 26" barrels a resonable hit ratio is still possible to 1200 meters (1350+ yards) . Takes a good rifleman and good conditions to do it though. Generally, with a good shooter who can judge the wind and known zero's, 900 meter hits on an E target are not that difficult. You will not stress the gas system with a 175 gr MK over Varget that has a muzzle velocity of 2550-2580 fps out of the M14/M25. That will get you to 1000+ yards quite nicely.
From my 22 inch using 175 gr. moving out at 2550 I can print a 10 shot group (scoped rifle shooting off a by-pod) in 19 inches. Using 168's at a thousand and the round key holes. I don't see any problems with the gas system. The alt. is about 4500 ft above sea level. I don't know what it will do below that. I think 600 yds. max is incorrect IMHO and personal experience. Out to 600 I have found that ball (Port) works fine. Moving up in bullet weight will get you out to a 1000 yds. though not as flat as some other rounds out there.