Confirm Action

Are you sure you wish to do this?

Confirm Cancel
Member Login

Posted: 11/1/2004 8:13:23 AM EDT
Will the SUM 1:10 barrel stablize seirra 69 grain?
Will 62 grain shoot to 300 yards without geting blown far(will it shoot to 300 acurately)?
Link Posted: 11/1/2004 8:51:25 AM EDT
IMOHO, I think it may not.

69 grain is about the limit for my 1x9, according to Kulek & Duff in the "AR-15 Owner's Guide".

They don't list the 1x10 in their book, but I believe some time back I extrapolated that the high end for a 1x10 is probably 62 grain, maybe 65 grain at most.

However, one thing many of us have learned is that, even if ten rifles from the same manufacturer have the same barrel, each of those ten rifles will show its own abilities or preferences with the same ammo.

Buy just one box and give it a try.
Link Posted: 11/1/2004 9:59:56 AM EDT

Originally Posted By JoeInCT:
69 grain is about the limit for my 1x9, according to Kulek & Duff in the "AR-15 Owner's Guide".

Don't believe everything you read - go and test it out.

1:10 should be able to handle M855, and the SS109 projectile is going to be close to the length of a 69gr OTM.

You can run the numbers all day - but do to manufacturing tolorances the only way to find out if YOUR barrel will shoot the 69gr accurately is to try it.

Both 62 & 69gr will make it to 300 no problem - I haven't had many issues with 55gr at those ranges; but at good 10mph wind from the side will move M193 (55gr) 14" at 300M. With 62gr you'd be looking at 11" of drift for the same conditions.
Link Posted: 11/1/2004 11:06:02 AM EDT
Sierra specifically rates their 69 HPBT match and new 65 SBT Gameking for 7"- 10" twist barrels.
Hornady also rates their 60 grain Vmax for 7"- 12" twist barrels.

As JoeinCT stated, each rifle is an individual and it's personal preference must be determined AT THE RANGE. Buy a box of Federal Match ammo with the 69's and let us know how she shoots.

Top Top