XCR-l breakin- diff ammo?

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Brianma65

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Hey people, I'm waiting on my XCR-l 1/8 twist heavy barrel and was wondering if it makes any difference , what ammo is used on beakin ? I have hornady 55 g and 62 g , and I was told that the 1/8 barrel likes the 60 g cartridges better. So should I breakin the rifle with the 60 g?
 
XCR break-in is not the same as barrel break-in.
The suggested break-in is for the action and gas system, not the barrel.
Bolt 'er on and make some noise, she'll be good to go.
 
9x19p said:
XCR break-in is not the same as barrel break-in.
The suggested break-in is for the action and gas system, not the barrel.
Bolt 'er on and make some noise, she'll be good to go.
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It's the barrel that I'm wondering about?
 
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As long as the projectile diameter matches the bore, the weigh doesn't affect how the barrel will break in, XCR were designed as a service rifle, where the acceptable accuracy is not Sub MOA.
 
hbean said:
As long as the projectile diameter matches the bore, the weigh doesn't affect how the barrel will break in, XCR were designed as a service rifle, where the acceptable accuracy is not Sub MOA.
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I'm not expecting sub MOA, but would like to get it to do what it's capable of. So what difference will I notice with the 55g opposed to 60 -70 g ammo? Is it possible that the heavier bullits be a little more accurate. ( I only sight it in from a bench, then it's only blasting away. I would be happy with 2 MOA, just wondering which bullit would be better suited to do it?)
 
The difference between 55, 60, or 70gr bullets at say 100 or 200yd, will not likely be noticed.
If you were shooting at 300-600yd, then bullet size plays a role. Typically the heavier bullet will have a higher BC, giving the advantage at distance.

add:
A match grade 45gr bullet will be more accurate at 100, than a bulk 70gr bullet.
Size or weight isn't always the deciding factor.
 
The reason I'm asking is , I got a 1000 55 g projectiles and a 1000 60g projectiles, that I'll be reloading soon. I want to order a few more thousand bullits and was wondering which ones would be more accurate,if it even makes a difference? I'm not concernered with sub Moa,if I was ,I would of got a bolt. I like to shoot a couple mags from a bench, just to sight in,see how it groups,then it's just banging away. But I would like to get it to do the best it can. ( all projectiles are hornady v max)...
 
9x19p said:
The difference between 55, 60, or 70gr bullets at say 100 or 200yd, will not likely be noticed.
If you were shooting at 300-600yd, then bullet size plays a role. Typically the heavier bullet will have a higher BC, giving the advantage at distance.
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Ok , got it, so bullit weight,or twist,has no impact on accuracy at 100 to 200 yards . ( which is 90% of my shooting distance.)
 
Brianma65 said:
The reason I'm asking is , I got a 1000 55 g projectiles and a 1000 60g projectiles, that I'll be reloading soon. I want to order a few more thousand bullits and was wondering which ones would be more accurate,if it even makes a difference? I'm not concernered with sub Moa,if I was ,I would of got a bolt. I like to shoot a couple mags from a bench, just to sight in,see how it groups,then it's just banging away. But I would like to get it to do the best it can. ( all projectiles are hornady v max)...
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Every barrel is different so no one can tell you what your barrel will shoot the best. I would try a few different types and weights of bullets before I bought any more 1000 lot boxes. Once you find a load it likes then buy your supplies in bulk. You may need to try 3 or 4 different powders and a few different bullets before you find the best combination.
With a 1:8 I would suggest 60 grain or heavier if you plan to shoot past 100 yards but that being said my HK SL8-4 with a 1:7 twist would shoot 50 and 55 grain bullets sub moa at 100 yards. you'll just need to try a few and find out yourself.
If you can get 1.5-2 moa with an XCR you're doing really well. Be happy if you get that and build 1000 of those.

Good luck
 
cr5 said:
Every barrel is different so no one can tell you what your barrel will shoot the best. I would try a few different types and weights of bullets before I bought any more 1000 lot boxes. Once you find a load it likes then buy your supplies in bulk. You may need to try 3 or 4 different powders and a few different bullets before you find the best combination.
With a 1:8 I would suggest 60 grain or heavier if you plan to shoot past 100 yards but that being said my HK SL8-4 with a 1:7 twist would shoot 50 and 55 grain bullets sub moa at 100 yards. you'll just need to try a few and find out yourself.
If you can get 1.5-2 moa with an XCR you're doing really well. Be happy if you get that and build 1000 of those.

Good luck
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I have winchester,federal ,remington ,hornady,and nosler , factory hunting rnds on hand . Plus AE , federal, remington FMJ . So I should find something that works. Most of my shooting is in the bush , so FMJ is a no go. Except for the scatter range trip. I'm still waiting on my press , so I'll be using factory ammo for a little while longer.
 
"FMJ a no go", says what?

Is this a provincial thing?

add:
Cr is right, my earlier reply about the 40gr Match was only an example of match vs bulk. I'm not suggesting you use it.
 
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Brianma65 said:
I have winchester,federal ,remington ,hornady,and nosler , factory hunting rnds on hand . Plus AE , federal, remington FMJ . So I should find something that works. Most of my shooting is in the bush , so FMJ is a no go. Except for the scatter range trip. I'm still waiting on my press , so I'll be using factory ammo for a little while longer.
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You should still be allowed to use FMJ for random target shooting on crown land just not for critters.
I had a huge surprise with my AR-10 when it shot Federal Fusion 150gr sub moa at 100yds. Just goes to show that you don't always need to have match grade ammo. That rifle has a 24 inch heavy stainless barrel though and is now the property of my buddy.
 
No FMJ allowed on crown land in NL. At least that's what wildlife told me. No FMJ allowed to be in your possession , on crown land frequented by wild life.
 
I've been waiting on a heavy 1/8 barrel , and I've been told it will be awhile longer. They do have a 1/8 light profile barrel that I could have now. What do you think? Should I wait on the heavy barrel? Take the light barrel?
 
Brianma65 said:
I've been waiting on a heavy 1/8 barrel , and I've been told it will be awhile longer. They do have a 1/8 light profile barrel that I could have now. What do you think? Should I wait on the heavy barrel? Take the light barrel?
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I'd take the light barrel...I just sold my heavy barrel last week so I could buy the light profile, I carry mine in the bush a lot too. It's only .8 lbs lighter than the heavy barrel, but it significantly changes the balance of the rifle for the better. BTW, my new 1:8 light barrel shot 2.5" @ 100 yards with the first LAR mag full of AE223 through it and about 1/2 that with handloads. I got to the range late on Wednesday and only managed to get off 40 or 50 rounds.
 
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