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9/19/2017 7:27:10 PM
Posted: 3/2/2006 7:22:30 AM EDT
I just got a NIB (but 15-20yrs old) Colt H-bar Match Sporter rifle. The barrel is marked 1/7.
Aren't the current ones 1/9?
My main interest will be to see if it is good enough for predator/varmint shooting.
Any ideas what type of accuracy I could reasonably expect.
I am guessing with the 1/7 barrel I neeed to be looking at heavier bullets (55gr and up)?
Any recomendations for FACTORY ammo. Not currently set up for .223 reloading.

Any info would be greatly appreciated. thanks, Jay
Link Posted: 3/2/2006 7:37:49 AM EDT
1/7 = 62's and up
Link Posted: 3/2/2006 7:40:57 AM EDT
[Last Edit: 3/2/2006 7:42:11 AM EDT by mr_wilson]

Originally Posted By jcs271:
I just got a NIB (but 15-20yrs old) Colt H-bar Match Sporter rifle. The barrel is marked 1/7.

Aren't the current ones 1/9?
nope, their 1/7

My main interest will be to see if it is good enough for predator/varmint shooting.
suspect it will

Any ideas what type of accuracy I could reasonably expect.
sub-MOA w/ fodder it likes

I am guessing with the 1/7 barrel I neeed to be looking at heavier bullets (55gr and up)?
again suspect 77grn SMKs should group the tightest, but the 75grn match HPGBT Hornady offering should shoot well too. For self defense these are your two best choices.

Any recomendations for FACTORY ammo. Not currently set up for .223 reloading.
Black Hills or Federal Gold Medal rounds in the weights above would be my choice

Any info would be greatly appreciated. thanks, Jay



Done deal.....
Mike

ETA - welcome aboard,
Link Posted: 3/2/2006 7:46:48 AM EDT
Anybody shoot 55gr 5.56 loads out of 1/7 twist?
Link Posted: 3/2/2006 7:51:57 AM EDT

I shoot 45gr varmint bullets through my 1/7" barrels along with everything else. If you like the looks of the ammo try a box. I've never had any ammo group more than 2 - 2 1/2" at 100 yards when I did my part, except for Wolf. The better ammo will group even better.
Link Posted: 3/2/2006 7:54:04 AM EDT

Originally Posted By Hatton007:
Anybody shoot 55gr 5.56 loads out of 1/7 twist?



I do, and they work good enough for me
Link Posted: 3/2/2006 7:55:24 AM EDT

Originally Posted By Hatton007:
Anybody shoot 55gr 5.56 loads out of 1/7 twist?



Sure, for plinking around, for serious work though the heavy rounds are the ticket....

Mike
Link Posted: 3/2/2006 8:30:29 AM EDT
[Last Edit: 3/2/2006 8:30:54 AM EDT by SWO_daddy]

Originally Posted By brian427cobra:
1/7 = 62's and up

Negative. 45s and up.
BTDT.
Link Posted: 3/2/2006 8:31:49 AM EDT
I had a 1/7 twist HBAR from 1988 to about 1992. It shot federal 55 grain soft points at around an inch some times less sometimes a little more (5 shot groups). I had a guys handloads that were 62 grain and they shot consistantly under an inch. It also liked the old style 55 grain UMC bullet that it would shoot from 1 inch to 1 1/2 inchs. You just have to see what your gun likes by tring different rounds.
JRandyH
Link Posted: 3/2/2006 11:31:03 AM EDT

Originally Posted By Hatton007:
Anybody shoot 55gr 5.56 loads out of 1/7 twist?



Certainly. In military training and rifle qual we used M193 through the M16A2 service rifle for years in the Corps. I often use 55gr in my 1/7 twist AR but I love the heavier stuff from Black Hillls.
Link Posted: 3/2/2006 1:46:04 PM EDT
Interesting visual reference

The following are Sierra MatchKing bullets. This puts the "grain measure" in a bit of perspective, and allows you to see why they are so different to shoot:

53 gr.HP MatchKing --->


69gr. HPBT --->


77gr. HPBT ---->


80 gr. HPBT Match--->

Link Posted: 3/2/2006 2:06:19 PM EDT
I use 55-grain (LC XM193) ammo in a 14.5" 1/7 barrel with no problems whatsoever.
Link Posted: 3/2/2006 3:33:25 PM EDT
I have a hbar sporter form 89 i shoot 55 gr and 62 they both shoot well
Link Posted: 3/3/2006 5:46:24 AM EDT
Nice find, that's a great rifle.

Many years ago I was at the range and anothe shooter had a Colt HBAR and let me run 5 rounds through it. My offhand 100 yard group could be covered with my palm. I was impressed to say the least. (I was doing a lot of offhand bullseye shooting at the time and was in practice.)
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