NeverAgain26
Member
I finally did it. I got an AR10A4 last week. (The shame was I got it Thursday and had to leave for a trip overseas before I got a chance to play with it. I am still traveling now). I put a Trijicon Reflex II on the Flat Top Rail (I wanted a Tripower but there is a 37 week backlog on them as the first ones made need to have new lenses swapped out by Trijicon).
I have some questions on the ammo. I did hours of searching TFL and THR on these questions and did not really get a clear understanding of the answers:
1. I was told by Armalite I can use either .308 or 7.62 X 51 ammo. I understand that the interchagability of these ammo depends on the gun, but my gun takes both, so that is not an issue.
2. I see some companies carry 7.62 X 54 (some of them with an 'R' designation). I looked up the case specs on ammoguide and they seem to be different in case length. Can someone give me a brief explanation of the difference between 7.62 X 51 and 7.62 X 54 ammo? The 7.62 is the same, so I am assuming the 7.62 is bullet diameter. What part of the cartridge is the 51 or 54 part? Case length? Does 51 mean 51mm?
3. If case length is difference, I am assuming 7.62 X 51 and 7.62 X 54 can not be used in the same gun.
4. I also see 7.62 X 25 and 7.62 X 39. If my above assumptions are correct, then these ammos have the same bullet diameter but not the same length and cannot be used in my gun. Am I correct? What types of guns use these ammos?
5. I got a box of PMC ammo but I want to buy some surplus ammo. I did my homework and see that there are some countries' surplus ammo I need to stay away from. I wanted to know if there were any places I could buy small lots (100 plus rounds) of different types of surplus (even a bit more expensive) to try them out and see how the gun liked them. I did not want to get stuck with caseloads of ammo which my gun did not like.
6. I also wanted to try ammo in different bullet weights and see which worked best with my gun so the same applies; where can I get some small lots of different weights to try out?
7. Lastly, I would like some feedback from AR10A4 owners on what surplus ammo your guns do best with in terms of reliability and accuracy and where the best deal on that ammo is to be had.
I will be punching paper at 100 yards (with this sight, not much further I can go out; so I guess I need to look into an additional sight with magnification for longer range shooting). I have not done a lot of hunting yet, but I guess I will start this year).
Thanks in advance for all your help.
NA26
I have some questions on the ammo. I did hours of searching TFL and THR on these questions and did not really get a clear understanding of the answers:
1. I was told by Armalite I can use either .308 or 7.62 X 51 ammo. I understand that the interchagability of these ammo depends on the gun, but my gun takes both, so that is not an issue.
2. I see some companies carry 7.62 X 54 (some of them with an 'R' designation). I looked up the case specs on ammoguide and they seem to be different in case length. Can someone give me a brief explanation of the difference between 7.62 X 51 and 7.62 X 54 ammo? The 7.62 is the same, so I am assuming the 7.62 is bullet diameter. What part of the cartridge is the 51 or 54 part? Case length? Does 51 mean 51mm?
3. If case length is difference, I am assuming 7.62 X 51 and 7.62 X 54 can not be used in the same gun.
4. I also see 7.62 X 25 and 7.62 X 39. If my above assumptions are correct, then these ammos have the same bullet diameter but not the same length and cannot be used in my gun. Am I correct? What types of guns use these ammos?
5. I got a box of PMC ammo but I want to buy some surplus ammo. I did my homework and see that there are some countries' surplus ammo I need to stay away from. I wanted to know if there were any places I could buy small lots (100 plus rounds) of different types of surplus (even a bit more expensive) to try them out and see how the gun liked them. I did not want to get stuck with caseloads of ammo which my gun did not like.
6. I also wanted to try ammo in different bullet weights and see which worked best with my gun so the same applies; where can I get some small lots of different weights to try out?
7. Lastly, I would like some feedback from AR10A4 owners on what surplus ammo your guns do best with in terms of reliability and accuracy and where the best deal on that ammo is to be had.
I will be punching paper at 100 yards (with this sight, not much further I can go out; so I guess I need to look into an additional sight with magnification for longer range shooting). I have not done a lot of hunting yet, but I guess I will start this year).
Thanks in advance for all your help.
NA26
