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.260 Remington Barrel Length?

 
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Old 02-18-2011, 11:08 AM
KPK KPK is offline
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.260 Remington Barrel Length?

What's your thoughts on this? I've read a lot about it and everyone has a different opinion that 26" is better than 24" etc. I'm sure it will give you a little more velocity, but are you losing much at 24"?

The rifle will be used for long range target, maybe tactical match someday, etc. I'd really like the handiness of the 24", but don't want to leave myself to short.

Plan is probabl 139 Scenars or 140 Bergers.
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Old 02-18-2011, 01:30 PM
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Re: .260 Remington Barrel Length?

IMHO the extra 2" is worth it. Espescially since it is a smaller bore for that case. There is already less burn area than with the 708 or 308. You may only see 50FPS but every bit helps.
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Old 02-18-2011, 07:24 PM
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Re: .260 Remington Barrel Length?

Quote:
Originally Posted by Michael Eichele View Post
IMHO the extra 2" is worth it. Espescially since it is a smaller bore for that case. There is already less burn area than with the 708 or 308. You may only see 50FPS but every bit helps.
+1
27 1/4 in both the rifles I had was getting 2950 from 140g AMAX I would say 26" min no exceptions.
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Old 02-18-2011, 08:45 PM
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Re: .260 Remington Barrel Length?

I would say depends a bit on the distance you need it for. I have a brux 4 groove cut at 23"

H4831 gives excellent accuracy but was a little slow. I have now went to H4350 and am running 140 a-maxes at 2855. This load showed ejector button marks on the case heads with one grain more powder at 2900 fps so I dropped it a grain.

The accuracy is good for anything I will shoot at to as far as I would shoot a 260 (1/2 moa) the slower load with h4831sc, was just over 1/4 moa at 600.
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Old 02-18-2011, 09:13 PM
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Re: .260 Remington Barrel Length?

Quote:
Originally Posted by KPK View Post
What's your thoughts on this? I've read a lot about it and everyone has a different opinion that 26" is better than 24" etc. I'm sure it will give you a little more velocity, but are you losing much at 24"?

The rifle will be used for long range target, maybe tactical match someday, etc. I'd really like the handiness of the 24", but don't want to leave myself to short.

Plan is probably 139 Scenars or 140 Bergers.


For targets, I would chose 26" to ring out every bit of velocity.

For hunting I would cut 23 or 24" for handing. you will loose a little velocity but not enough
at hunting distances.

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Old 03-09-2011, 11:31 AM
KPK KPK is offline
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Re: .260 Remington Barrel Length?

Thanks for the info guys. It's been awhile and just remembered this thread.

I went ahead and got a Rock 27" 6.5 barrel for the 260. It'll be finished at 26" is possible. Maybe a little shorter.

What loads should I try? It'll be on a Surgeon 591, A5, etc.
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Old 03-09-2011, 12:43 PM
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Re: .260 Remington Barrel Length?

Sounds like you got to a good place!

For others who are still wanting to get a good feel for changes in barrel length, there are two things that can help. First, a tool that can give one a feel for how much muzzle velocity changes with barrel length for a given load. Here is one:

Velocity Estimator « Shooters Notes

Second, one needs to get a feel for what that change means in terms of bullet drop and drift. Remember, drop is a lot more consistent than drift, so look at the drift figures to see how much you will be affected by the unpredictable wind components in your calculations. (Most trajectory calculators use 10 mph crosswind component as the default. You may be good for a 2 mph uncertainty in steady wind and a little more for gusts. Either reset the 10 mph for your uncertainty value or use the 10 mph as your guideline.)

There are a lot of good trajectory calculators available, but my favorite is:

JBM - Calculations - Trajectory

You will be surprised at how little a 50 ft/sec difference changes things at typical .260 Remington velocities! It may still be important to you, so doing your own assessment is the way to go.

Cheers!
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