M48 Custom Rifle ( Left Handed )

That is very nice Vince.. Sure will put the fear in those moose up north this fall. Best of luck with it.
 
Vince,

Very nice buddy.
When do you expect to get your M48 Custom?

JD338
 
About April I think.

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FOTIS":dd93g4pd said:
Nice Still doing the 26" barrel?
So far.
I have a 22 " barrel on my 30-06 now so I was thinking a 26 " barrel on this one for a two gun 30-06 combo.
Having second thoughts about that now. Just wondering what gains I can expect to see.

Vince

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Vince":2k50gciy said:
FOTIS":2k50gciy said:
Nice Still doing the 26" barrel?
So far.
I have a 22 " barrel on my 30-06 now so I was thinking a 26 " barrel on this one for a two gun 30-06 combo.
Having second thoughts about that now. Just wondering what gains I can expect to see.

Vince

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I don't know... never put the chronograph to work when my 1917 .30-06 had a 26" barrel. It's close to "book" velocity trimmed to the 21" length, so I'm thinking there might be a fair bit to gain with a full 26" tube...

Dunno. You'll have to tell us! :grin:

Guy
 
I read a really interesting article about longer barrels on the 30-06 by a bloke named German Salazar.
He seems to contradict a lot of the gunshop wisdom. I've been getting told by some that I won't see significant gains over the 22" barrel. I guess I'll just have to try it and see.

Vince

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Vince my Ruger #1B in 30-06 has the standard factory 26" barrel and I am getting 2940 fps with 165 gr. Partitions or Accubonds with 57.4 grs of IMR4350. I used that exact same load in a 22" barrel on a Model 700, but when I had that rifle I did not own a chronograph. It would be interesting to see how it would shake out. Take a look at some testing I did.

viewtopic.php?f=45&t=19372

In this testing I used 3 different rifles in 6mm Remington with three different bullets. The loads were the exact same used in each rifle. The little model 600 Remington has the 18 1/2" barrel, the Ruger M77 has a 22" barrel, and my #1B in 6mm has the 26" barrel. This gives a good view of different barrel lengths and effects on muzzle velocity. What my test showed seemed to go along with most of the reading I have done on how barrel length effects velocity in most cases.

By the way I cannot wait for you to get that new rifle. It is gorgeous!
 
MV 2000-2500 fps, the approximate change in MV per 1" change in barrel length is 10 fps.
MV 2500-3000 fps, the approximate change in MV per 1" change in barrel length is 20 fps.
MV 3000-3500 fps, the approximate change in MV per 1" change in barrel length is 30 fps.
MV 3500-4000 fps, the approximate change in MV per 1" change in barrel length is 40 fps.
 
80 fps if that's accurate.
Not as big of a gain as I was hoping. :(
I'll just have to give it a go and see. One of my mates has a 26" barrel on his 30-06 and loves it. He states he's in the high 2900 fps to just over 3000 fps with 165/168 grail pills.

Vince

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Vince":35klo5t4 said:
80 fps if that's accurate.
Not as big of a gain as I was hoping. :(
I'll just have to give it a go and see. One of my mates has a 26" barrel on his 30-06 and loves it. He states he's in the high 2900 fps to just over 3000 fps with 165/168 grail pills.

Vince

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I don't think you'll be too far off with the right powder...

Cartridge : .30-06 Spring. (SAAMI)
Bullet : .308, 168, Nosler BalTip 30168
Useable Case Capaci: 59.813 grain H2O = 3.884 cm³
Cartridge O.A.L. L6: 3.340 inch = 84.84 mm
Barrel Length : 26.0 inch = 660.4 mm
Powder : Alliant Reloder-17

Predicted data by increasing and decreasing the given charge,
incremented in steps of 2.0% of nominal charge.
CAUTION: Figures exceed maximum and minimum recommended loads !

Step Fill. Charge Vel. Energy Pmax Pmuz Prop.Burnt B_Time
% % Grains fps ft.lbs psi psi % ms

-20.0 82 47.20 2466 2268 31572 7588 95.9 1.544
-18.0 84 48.38 2527 2382 33765 7785 96.9 1.503
-16.0 86 49.56 2588 2498 36121 7966 97.7 1.463
-14.0 88 50.74 2648 2616 38647 8130 98.4 1.419
-12.0 90 51.92 2709 2737 41359 8277 99.0 1.375
-10.0 92 53.10 2768 2859 44272 8405 99.5 1.333
-08.0 94 54.28 2828 2983 47405 8514 99.8 1.293
-06.0 96 55.46 2887 3108 50780 8603 100.0 1.254
-04.0 98 56.64 2945 3235 54415 8671 100.0 1.216
-02.0 100 57.82 3002 3363 58322 8732 100.0 1.180 ! Near Maximum !
+00.0 102 59.00 3059 3492 62577 8790 100.0 1.145 ! Near Maximum !
+02.0 104 60.18 3116 3622 67164 8844 100.0 1.112 !DANGEROUS LOAD-DO NOT USE!
+04.0 106 61.36 3172 3753 72130 8896 100.0 1.079 !DANGEROUS LOAD-DO NOT USE!
+06.0 108 62.54 3227 3886 77532 8944 100.0 1.048 !DANGEROUS LOAD-DO NOT USE!
+08.0 110 63.72 3283 4020 83399 8988 100.0 1.018 !DANGEROUS LOAD-DO NOT USE!
+10.0 112 64.90 3338 4156 89795 9028 100.0 0.989 !DANGEROUS LOAD-DO NOT USE!

Results caused by ± 10% powder lot-to-lot burning rate variation using nominal charge
Data for burning rate increased by 10% relative to nominal value:
+Ba 102 59.00 3169 3745 76557 8415 100.0 1.064 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 102 59.00 2890 3115 50540 9132 98.5 1.253
 
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