Short Barreled 7 Rem Mag

Its not rocket science...
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It is not rocket science to understand that if R-17 with a 24" barrel can't match R-22 in a 24" barrel in a 7mmremmag, R-17 in a 22" barrel certainly won't match R-22 in a 24" barrel in a 7mmremmag.

If R-17 was indeed the magic powder that you would have us believe, then Hornady might actually use it in their highest velocity loads, but as has already been proven, Hornady does not use R-17 in their highest velocity loads.
 
Velocity loss in standard cartridges = appr 40fps - 50fps per inch RL17 will increase the velocity in a 22" barrel 40fps - 50fps per inch = bumping the velocities back up to the original velocities in a 24" barrel...

I couldn't care less if RL22 beats out RL17 in equal length barrels that is not what the OP asked about or what my response to him that you seem to not be able to fathom was...

:rolleyes:
 
]I couldn't care less if RL22 beats out RL17 in equal length barrels that is not what the OP asked about or what my response to him that you seem to not be able to fathom was...
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The OP asked what velocity a 7mmremmag rifle with a 22" barrel would give up to a 7mmremmag rifle with a 24" barrel.To which you replied.


Switch to RL17 powder and you will not have a velocity loss of any kind...
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I am simply pointing out that if you cut 2" off of the barrel of a 7mmremmag, contrary to your statement above, you will give up some velocity potential.

If the OP had a 7mmremmag, and he was already using the powder that produced the best velocity in his 24" barrel, (and by the way, the Alliant data that I posted the link for indicates that it won't be R-17) he won't be able to produce the same velocity with that gun with the 22" barrel, regardless of what powder he tries.

In order for there to be no velocity loss of any kind, simply by switching to R-17 as you suggested, the R-17 would have to produce more velocity in a 22" barrel, than R-17 could produce in a 24" barrel. Common sense would indicate that shortening the barrel and using the same powder will not result in an increase in velocity.
 
I am simply pointing out that if you cut 2" off of the barrel of a 7mmremmag, contrary to your statement above, you will give up some velocity potential.
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and I am saying with RL17 he will not be giving up anything in a 2" shorter barrel. I didn't in the two rifles I experimented with one was a 30-06 cut down from 24" - 20" =4" shorter and a 375RUM cut down from 26" - 21" = 5" shorter and I can equal velocities when I switched to RL17 and no matter how hard I tried RL22 would not do for me what RL17 does...

Yep thats right I have actual experience with this powder in shorter barrels not just a theory or what I've read on the internet...

:cool:
 
I didn't in the two rifles I experimented with one was a 30-06 cut down from 24" - 20" =4" shorter and a 375RUM cut down from 26" - 21" = 5" shorter
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So would those two rifles have produced more velocity using R-17 with the original barrel lengths, than they now produce using R-17 with the shortened barrels?
 
stubblejumper said:
So would those two rifles have produced more velocity using R-17 with the original barrel lengths, than they now produce using R-17 with the shortened barrels?
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Possibly I do not know I did not try it out before I shortened the barrels.

I do know that after the barrels were shortened that the velocities dropped so much with IMR4350 & RL22 that I had to find something to boost the velocities back up.

RL17 was the answer for me and to say that I was totally surprised by the velocity gains is an understatement...

CC
 
Possibly I do not know I did not try it out before I shortened the barrels.
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It doesn't take a rocket scientist to realize that the longer barrels would have produced more velocity using the same R-17 powder. Therefore you gave up potential velocity by shortening the barrels.
 
I had specific requirements for shorting the barrels of these two rifles the 30-06 was for all round use for my wife/daughter-in-law and for me to use in thick bush hunting coastal blacktail deer the 375RUM replaced my Marlin 1895GS 45-70 for my defense rifle while prospecting and instead of being limited to a max 200 yards hunting with the 45-70 I am now good out to 500 yards hunting when I pop a scope on it.

With RL17 the 20" barreled 30-06 with 180gr Scirroco gives me 2750fps which is the same as the 24" barrel gave me with IMR4350 the 21" barreled 375RUM gives 3020fpswith 260gr Accubonds which is exactly what I got with IMR4350 in a 26" barrel...

Here is a pic of the shortened 375RUM with the XS Sights backup ghost ring sight mounted and the scope options I have for it...

Finished_21_Inch_Rem_700_LSS_in_375RUM_Dec_2009_011.jpg
 
With RL17 the 20" barreled 30-06 with 180gr Scirroco gives me 2750fps which is the same as the 24" barrel gave me with IMR4350 the 21" barreled 375RUM gives 3020fpswith 260gr Accubonds which is exactly what I got with IMR4350 in a 26" barrel...
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And it is quite logical to assume that R-17 would have produced more velocity in both rifles, before the barrels were shortened. Therefore, there was a loss in potential velocity when the barrels were shortened. End of story.
 
Who cares if it does or not that has a nothing to do with the OP's question or my response too him...
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On the contrary, it is totally relative to what the OP is asking.

What does a 22 inch barrel in 7mm Remington give up in speed to a 24 inch? Worth worrying about?
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You are posting that the OP will not lose any velocity by going with a 22" barrel, and that is not at all true. We can't give an exact number, but he will definitely lose some velocity potential.
 
Thats easy... "he knows more about firearms and spends far to much time playing with firearms and their components and he can actually use them more proficiently than most"...

:D
 
Thats easy... "he knows more about firearms and spends far to much time playing with firearms and their components and he can actually use them more proficiently than most"...
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That sounds like wishful thinking on your part.I doubt that she tells her friends anything even remotely close to that.
 
Ok Ok you got me her is what she would say to her friends... "he is a freaking lazy no good for nothing bastard that ignores me all of the time except for when he wants ### which is all the freaking time and when I say "NO" which is all the freaking time he runs from me and spends all of his time/money on his guns or in his gun room loading/cleaning/changing scopes or at the gun club or on the computer talking guns... but you know I am really proud of him because he knows more than most about guns/loads and is far more proficient in the use of them than anyone I have ever met"...

:D
 
Ok Ok you got me her is what she would say to her friends... "he is a freaking lazy no good for nothing bastard that ignores me all of the time except for when he wants ### which is all the freaking time and when I say "NO" which is all the freaking time he runs from me and spends all of his time/money on his guns or in his gun room loading/cleaning/changing scopes or at the gun club or on the computer talking guns...
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We have a winner.:D
 
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