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2900 Fps .308?

 
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  #36  
Old 09-20-2008, 09:53 PM
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Re: 2900 Fps .308?

Im shooting a 168 GR over 50 gr of IMR 4350,has anyone chronoed this load?
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  #37  
Old 09-20-2008, 10:52 PM
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Location: Fredericksburg VA
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Re: 2900 Fps .308?

The key to this is the long throat setup just for the 190s. This moves the bullet well out forward from the standard COAL and increases case capacity from the norm for that weight bullet while lowering pressure due to the increased case capacity.

Not sure of the actual numbers, but anyone with quickload can see the effect themselves by adjusting the the default settings for seating and OAL in QL and watch the MV go up and the pressure down.

that is also why beware of internet posted QL numbers because they are normally run from default figures which if you are deviating from the "established norms", and you do not adjust in QL you will get bogus figures from reality.

If you trr to do this with standard 308 reamer, you will screw up as you will be short in the throat, you must go in and hand throat out to max OAL for the 190. Dave Kiff of PTG makes a really good hand throater that is easy to use.

BH
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  #38  
Old 09-21-2008, 04:21 AM
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Join Date: Oct 2006
Location: Norman, Ok
Posts: 187
Re: 2900 Fps .308?

Yep I know about this! I performed the same task with my last build a 243, with a 107SMK the COL is right at 3" I'd have to get out Mr. Caliper to be sure and with 49.1gr. of Retumbo I'm getting 3050FPS not a screamin' fast load but accurate as all get out! I was going to use this rifle for tactical matches then the word of caliber restrictions started popping up and the F/TR has caliber restrictions so now it's just my fun gun but that little bullet is flat shooting! have not got it over 500 yards yet but I'm working on that ;)

Ive just heard a lot of stuff being said that has nothing to back it up other than someones word and sometimes when you don't know the person telling you this information a guys gotta wonder about the validity of the statement, make sense? Later,

Kirk
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  #39  
Old 09-21-2008, 10:28 AM
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Join Date: Jan 2007
Location: MS
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Re: 2900 Fps .308?

There is no caliber restriction in F-open and a 243 would be very competitive with 105 to 115s at 3000+
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  #40  
Old 09-21-2008, 08:56 PM
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Join Date: Oct 2006
Location: Norman, Ok
Posts: 187
Re: 2900 Fps .308?

My bad how about the TR portion, last I recall it was 223 or 308. I have hear that some of the tactical matches are going to caliber restrictions of 223, 308, or 300 Win Mag mainly due to the 243 and others pushing the high VLD's at a good velocity. Compaired to my 308 the 243 is a cakewalk to hit targets! you can be off in you ranging a considerable amount and still make a hit since they are shooting so flat. Later,

Kirk
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  #41  
Old 09-22-2008, 12:12 AM
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Location: Wenatchee, WA
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Re: 2900 Fps .308?

The main 'caliber' restrictions in tactical matches that I've been hearing the last year or two is a) no magnums and b) a velocity limit of something like 3100fps, even for the 6 / 6.5mm stuff, both mainly oriented towards limiting the damage done to steel targets (even the AR500 stuff). They ain't cheap, and someone has to pay for new ones - usually *not* the shooters. A few places have '.308 only' matches... to try and stick to the practical/tactical 'real-world' emphasis, not the 'gaming' that is so prevalent with people choosing flat shooting high-speed low-drag calibers so they can beat the .308s. I'm finally rebarreling my #1 tactical/practical stick because I'm tired of playing second fiddle to the high-speed low drag crowd. I don't mind losing, but I want it to be on a level playing field so I know it's just me.

Now that we've gone sufficiently far afield from the topic... back to your regularly scheduled programming ;)
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  #42  
Old 09-28-2008, 12:35 AM
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Join Date: Jan 2005
Location: Pocahontas, AR
Posts: 877
Re: 2900 Fps .308?

Quote:
Originally Posted by milanuk View Post
The main 'caliber' restrictions in tactical matches that I've been hearing the last year or two is a) no magnums and b) a velocity limit of something like 3100fps, even for the 6 / 6.5mm stuff, both mainly oriented towards limiting the damage done to steel targets (even the AR500 stuff). They ain't cheap, and someone has to pay for new ones - usually *not* the shooters. A few places have '.308 only' matches... to try and stick to the practical/tactical 'real-world' emphasis, not the 'gaming' that is so prevalent with people choosing flat shooting high-speed low-drag calibers so they can beat the .308s. I'm finally rebarreling my #1 tactical/practical stick because I'm tired of playing second fiddle to the high-speed low drag crowd. I don't mind losing, but I want it to be on a level playing field so I know it's just me.

Now that we've gone sufficiently far afield from the topic... back to your regularly scheduled programming ;)
What will you change to?
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