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Velocity ?

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Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: September/24/2010 at 10:59
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Guys, got a question.

I have a Mauser 3000 .30-06 that I picked up a couple of years ago.  Problem is that my loads don't come within 200 fps of what they should even when I take into account the 22 vs. 24 in. barrel.  Accuracy is fair but not outstanding (1.25"-1.5").  My gut tells me "loose bore" but I thought I'd get some input from the experienced and knowledgable shooters/loaders on this board.  I've been loading about 8 years now and this is the first time I have seen this problem.  I have tried several different powders; all on the slower side.  Should I try a faster powder?  Should I try a different bullet?  Any input is appreciated.
 
Thanks,
 
Chris
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: September/24/2010 at 11:16
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I would play with several different weight bullets if you haven't already.  Could be the twist and bullet aren't matching up good.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: September/24/2010 at 12:00
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I'd have to agree with the loose bore, but also would try a faster burn rate powder.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: September/24/2010 at 12:22
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  What powder and bullets are you using,Chris?  What powder loads have you tried?
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: September/24/2010 at 12:35
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Originally posted by magshooter1 magshooter1 wrote:


Problem is that my loads don't come within 200 fps of what they should


What is your source for "should"?



Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: September/24/2010 at 15:35
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Have a qualified gunsmith slug the bore to find out if the bore is to large, or if you reload, expeariment with different bullits and powders to try and tighten the groups up. Slower burning rate powders will give you higher velocities; just make sure you match powder to bullit weight according to your manual.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: September/24/2010 at 18:30
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Originally posted by 300S&W 300S&W wrote:

  What powder and bullets are you using,Chris?  What powder loads have you tried?

yes do tell
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: September/24/2010 at 20:42
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You will lose velocity if you are seating with a large jump to the lands.  How far are you seating from the lands?
 
Some barrels are slower.  Nothing you can do about it.
 
Also try RL17, many are getting greater velocity, I know I am getting approx 100 fps more than comparable loads with no pressure signs.  IMO in 3 or 4 years RL17 will be considered THE powder for the 30-06.
 
Use a Federal 215 magnum powder and you will gain a little.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: September/24/2010 at 22:37
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My mauser for a while shot like crap.  I used different bullets which helped.  Also helped free floating the barrel, but I am not sure I would mess with that until you try other bullets and powder.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: September/29/2010 at 08:10
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Powders and bullets tried:  H4350, IMR4350, IMR 4831 and R-19 (haven't shot all these but initial results low too) Hornady 165g SST and Nosler Ballistic Tip 165g.  Using data from Hornady and Nosler manuals.  Worked up to max loads from both manuals. 
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: September/29/2010 at 13:14
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What kind of pressure signs were you getting if any ?
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: September/29/2010 at 17:16
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   +1
 
    Also,what were your velocity increases from the start loads to max?
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: September/30/2010 at 07:41
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Originally posted by Roy Finn Roy Finn wrote:

What kind of pressure signs were you getting if any ?
 
No signs of pressure at all.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: September/30/2010 at 07:45
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Originally posted by 300S&W 300S&W wrote:

   +1
 
    Also,what were your velocity increases from the start loads to max?
 
I'll have to go back and look at my notes for the start loads but the max loads topped out in the mid to high 2600's with one breaking 2700.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: September/30/2010 at 09:54
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You can continue up then in 1/2 grain increments.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: September/30/2010 at 09:58
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Just for the record, I can load 58 grns of IMR-4350 in pretty much any 06 I worked with and I've gone to 58.5 before accuracy started to fall off.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: September/30/2010 at 10:04
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  As you increase you loads watch for pressure signs,unusually hi increases in velocity,or decreases in velocity.  DO NOT exceed Noslers max velocity even if none of the previous things mentioned show up.  
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: September/30/2010 at 10:14
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Was that a CYA ? Guess I shouldn't just say it's safe should I.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: September/30/2010 at 11:06
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  But it is safe and not really a CYA cause you had already asked if he had seen any pressure signs and by his answer we knew he had the knowledge to watch for them.  You know yourself from being involved in other threads involving the "discussions" of exceeding max published loads how things can go.  So all I wanted to do was put out some info that has worked for me over the yrs that he can add to what he already watches for IF he chooses to.  To me the more technical info and on hand experiences I learn about the better chances of me keeping all my body parts where they belong.  Bucky 
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: September/30/2010 at 14:22
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Originally posted by magshooter1 magshooter1 wrote:

Originally posted by 300S&W 300S&W wrote:

   +1
 
    Also,what were your velocity increases from the start loads to max?
 
I'll have to go back and look at my notes for the start loads but the max loads topped out in the mid to high 2600's with one breaking 2700.
What bullit weight and design are you using, and what are you measuring the velocity with?
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: September/30/2010 at 15:07
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Originally posted by 300S&W 300S&W wrote:

  But it is safe and not really a CYA cause you had already asked if he had seen any pressure signs and by his answer we knew he had the knowledge to watch for them.  You know yourself from being involved in other threads involving the "discussions" of exceeding max published loads how things can go.  So all I wanted to do was put out some info that has worked for me over the yrs that he can add to what he already watches for IF he chooses to.  To me the more technical info and on hand experiences I learn about the better chances of me keeping all my body parts where they belong.  Bucky 
 
Actually, I misread your post at first. I thought I read to not exceed Noslers max loads and you said velocity. That is 100% correct. I'm glad I just saw that cause I thought I was going to have to ban you for disagreeing with me. That was close.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: September/30/2010 at 16:12
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  GOOD enough!
 
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: October/01/2010 at 23:30
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SmileAll sounds like good advice. Does it shoot well? Get sombody that knows more than you to take a look at it -- I don't mean to be "snarky" but we all have our limitations and there might be somebody out there who could spot some overlooked problem. Also, carefully review your data collection techniques -- are your chronographed recordings accurate? Possibly, you could run some additional readings (data) using some other weapon having known velocity capabilities.
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