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Posted: 10/3/2004 10:03:29 AM EST
Can I get 3 and 4 inch groupings at 300 yards with a chrom-lined 20" Government profile, 1:9 Bushmaster barrel?

Or should I just get a Stainless or Chrome-moly?

Thanks
Link Posted: 10/3/2004 10:04:52 AM EST
If you are up to it, using optics and a free float, yes, you can do that with chome.
Link Posted: 10/3/2004 10:28:04 AM EST

Originally Posted By Combat_Jack:
If you are up to it, using optics and a free float, yes, you can do that with chome.



I should have said I intended to use it with a free float, and a Leupold MRT M1 IL or MRT M3,

Spending all this money on Optics, I just want to make sure I would be happy with a 20 chrome-lined.

What does the military use in thier SPRs?
Link Posted: 10/3/2004 10:29:14 AM EST
Douglas 1/8 stainless. If you have the budget, get one of those, or a stainless barrel. More maintenance, but for the ultimate in accuracy, its the only way to go.
Link Posted: 10/3/2004 11:18:00 AM EST
Yes you can. I do that all the time with my TA-11 equipped 20" chrone, 5.56 BM barrel. It's just a matter of feeding it the proper fuel.

Luck,

SD
Link Posted: 10/3/2004 12:19:12 PM EST
Hell, I've done that on occasion (couldn't do it on demand, but it happened often enough), with a 16" HBAR and 3-9x scope at 300 yards. Plain "ol M855 ammo (IMI). I'd say 50-70% of the time, prone on a blanket. That was when I was in better practice.
Link Posted: 10/3/2004 12:39:07 PM EST
[Last Edit: 10/3/2004 12:41:52 PM EST by Dave_A]

Originally Posted By POOR_MAN:
Can I get 3 and 4 inch groupings at 300 yards with a chrom-lined 20" Government profile, 1:9 Bushmaster barrel?

Or should I just get a Stainless or Chrome-moly?

Thanks



SPR is a STAINLESS barrel... NO CHROME...

Oh, and DO NOT USE 1:9 & 55gr ammo for 300yds and out...

1:7 with 75s or 77s is far better...

Remember: 3-4" 10-shot group at 300 would be a 10-X in HP, however that would also be with no optics & an A2 rifle...

It's doable, but the 1:9 twist will make it harder...

Are you planning on shooting 40 or 50gr loads? If not, then 1:7 will work for everything from 55gr surplus to 'good' 77gr SMK Black Hills



Link Posted: 10/3/2004 1:17:23 PM EST

Originally Posted By Dave_A:
Oh, and DO NOT USE 1:9 & 55gr ammo for 300yds and out...

It's doable, but the 1:9 twist will make it harder...

Are you planning on shooting 40 or 50gr loads?I was planning on useing 55.gr Q3131A If not, then 1:7 will work for everything from 55gr surplus to 'good' 77gr SMK Black Hills, Does any one offer a 1:7 Stainless in 20"?



Thanks,
Link Posted: 10/3/2004 1:22:23 PM EST
RRA, Bushmaster, Olympic...just about everrybody offers a tight twist stainless barrel. Many stainless barrels are 1/8. That will do the trick.
Link Posted: 10/3/2004 1:24:53 PM EST

Originally Posted By Dave_A:
[Oh, and DO NOT USE 1:9 & 55gr ammo for 300yds and out...

1:7 with 75s or 77s is far better...


The carbine portion of the ITRC (Int'l Tactical Rifleman Championships) was won this year with a 16" stainless Rock River barrel (1:8) shooting a 52gr bullet, Benchmark powder, in once-fired LC cases. That had carbine shots to 350-375 yards, and misses were heavily penalized.

(I shoot the 75's, FWIW)

-z
Link Posted: 10/3/2004 1:55:32 PM EST
Thanks everyone,

I made another post asking about Varminter Barrels and HBARs if you want to go in and give me some suggestions here is a Link
Link Posted: 10/3/2004 1:57:53 PM EST
its as any accurate as any other barrel with iron sights...

with an optic you may see a differnce between a SS and CL...

but you don't get an CL from an accuracy sake... you get it for killing-sake... it will be more accurate than you...

GET A CHROMELINED
Link Posted: 10/3/2004 2:00:37 PM EST
Link Posted: 10/3/2004 4:21:27 PM EST
3-4 inch groups? With a free float, and a Leupold MRT M1 IL or MRT M3? You will be able to take a hair off a gnats ass at 300 meters with that setup my friend. Practice makes Perfect.
Link Posted: 10/7/2004 6:25:05 PM EST
Not many people are focusing on the lightweight government profile note. I dont think its gonna be as accurate as an Hbar, but not much difference.
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