Andy_B Posted September 17, 2010 Report Share Posted September 17, 2010 I am intending to have the barrel chopped on my old BRNO its already screw cut but threads are ******** ...so a barrel chop and re cutting should save its life..the barrel measures 25" from crown to bolt face ...however i intend to cut it at 12.5" which is 2" longer than the end of the stock...is 12.5" ok for barrel length ?? fitting a SAK mod on the end should make it pretty versatile.. Quote Link to comment Share on other sites More sharing options...
markbivvy Posted September 17, 2010 Report Share Posted September 17, 2010 is 12.5" ok for barrel length yes. Quote Link to comment Share on other sites More sharing options...
Billy. Posted September 17, 2010 Report Share Posted September 17, 2010 Yes, as above 12.5" is fine and that's the same as what I've cut my semi auto .22LR. Quote Link to comment Share on other sites More sharing options...
magman Posted September 17, 2010 Report Share Posted September 17, 2010 is 12.5" ok for the wife yes. Spoiling her again Mark Quote Link to comment Share on other sites More sharing options...
markbivvy Posted September 17, 2010 Report Share Posted September 17, 2010 Spoiling her again Mark i am not folding it in half for no one. :good: Quote Link to comment Share on other sites More sharing options...
Dave 101 Posted September 17, 2010 Report Share Posted September 17, 2010 Hi . 12 1/2" is legal but its a bit too short to get the benefit of a full powder burn , to get the maximum presure 14 1/2" is best . why not experiment with the bore to see if there is a tight spot and cut there if you find one this should improve accuracy . To do this you need a patch on a cleaning rod , slowly push it down the bore till you find a tight spot , theres no gaurentee you will but its worth a go . Dave Quote Link to comment Share on other sites More sharing options...
magman Posted September 17, 2010 Report Share Posted September 17, 2010 i am not folding it in half for no one. :good: :o Good job she doesn't go on the pc Quote Link to comment Share on other sites More sharing options...
ABOLT Posted September 18, 2010 Report Share Posted September 18, 2010 Hi i personally wouldnt cut it that short because you also shortining the twist rate which would effect the accuracy for the longer shots, not only that i think the reason why they dont do them that short at the factory is for that reason. :unsure: Quote Link to comment Share on other sites More sharing options...
Billy. Posted September 18, 2010 Report Share Posted September 18, 2010 (edited) Hi i personally wouldnt cut it that short because you also shortining the twist rate which would effect the accuracy for the longer shots, not only that i think the reason why they dont do them that short at the factory is for that reason. :unsure: If the twist rate is 1 in 10 then the speed of the spin will have been set in that time. if the barrel was still 1 in 10 but it was double the length, the bullet would still spin at a rate of 1 in 10 Edited September 18, 2010 by Billy. Quote Link to comment Share on other sites More sharing options...
Lez325 Posted September 18, 2010 Report Share Posted September 18, 2010 (edited) I though 14" was the minimum for barrel length?? May be wrong bit Im sure I read that somewhere NO I just checked and it 12 inches :unsure: Les Edited September 18, 2010 by Lez325 Quote Link to comment Share on other sites More sharing options...
Dave 101 Posted September 18, 2010 Report Share Posted September 18, 2010 I think the reason for long barrels is connected with the use of open sights to get a more accurate sight picture , thats why target rifles have even longer barrels [ and barrel / sight extension tubes ] to maximise this effect . Of course now if using a scope this negates the need for such a longbarrel , providing the best MV is obtained the length is not so important . The twist rate is there to stabalize the bullet in its flight so long as the bullet weight is compatible with the twist rate length is only a matter of preference . As I said earlier I believe 14 1/2" will do the job . Dave Quote Link to comment Share on other sites More sharing options...
rtaylor Posted September 19, 2010 Report Share Posted September 19, 2010 .22lr powder burns out around 14", so much longer and its just slowing the bullet down, much shorter and you will loose accuracy. Like Dave said around 14.5" is about right. Quote Link to comment Share on other sites More sharing options...
jamie g Posted September 19, 2010 Report Share Posted September 19, 2010 12 inchs will be fine. i would have it at 14 tho. for the distance they shoot to for vermin it wont matter to muc. its more to do with how compact you want it if shooting from a 4x4. i no the annie rifles come in 14 inch barrel. and they no a thing or to about rifles Quote Link to comment Share on other sites More sharing options...
Dekers Posted September 19, 2010 Report Share Posted September 19, 2010 12.5 is far too short for any of my requirements but is perfectly legal as far as I am aware. Power and accuracy MAY be effected to a small extent but not enough to cause any concern for what will obviously be a field .22lr and not a target tool. Twist rate will remain unchanged at 16-1 on these, just not as many rotations before the bullet leaves the barrel. If it works for you then go for it. Quote Link to comment Share on other sites More sharing options...
vmax55 Posted September 19, 2010 Report Share Posted September 19, 2010 i had a 452 once and had it chopped down to 12" what a big big big mistake that was!!!!!! people will proberly argue this but im talking from experience on this one. I lost a lot of range with it and in the end i litteraly threw the rifle away. Anshutz dont go down to 12". I think you WILL regret it mate. As jamie said 14" no less. Imo i think 14" is just right for rimfire. you can always chop it again but you cant stick it back on. Quote Link to comment Share on other sites More sharing options...
sapper063 Posted September 19, 2010 Report Share Posted September 19, 2010 mines down to 13 inch no power loss on distance Quote Link to comment Share on other sites More sharing options...
mel b3 Posted September 20, 2010 Report Share Posted September 20, 2010 i have a cz 452 american , when i first bought it i used it with a bbmf mod and it was fantastic , after a couple of months of use i decided to have it cut down to make it easier to shoot from the 4x4 , i had it shortened to 12.75 inches and also bought and fitted a carbon fibre mod from the guy that did the work , when i first tried to zero it i thought id wrecked the gun , it was grouping like a shotgun , after half an hour on a target i just learned to shoot it a little differently , i think it was just because it had lost so much weight from the end of the barrel , i cant give any figures as to power loss but it seems exactly the same and i still regularly shoot rabbits past 100yrds , all in all im very very pleased that i had it done. Quote Link to comment Share on other sites More sharing options...
wabbitbosher Posted June 8, 2011 Report Share Posted June 8, 2011 I though 14" was the minimum for barrel length?? May be wrong bit Im sure I read that somewhere NO I just checked and it 12 inches :unsure: Les Not being picky picky but the limit is 30 cm and an overall length of 24 inches or it becomes a Section 5 Quote Link to comment Share on other sites More sharing options...
CharlieT Posted June 8, 2011 Report Share Posted June 8, 2011 The following information is from Mark White's book "The Ultimate Ruger 10/22 Manual and User's Guide" Ruger 77/22; Remington Standard Velocity .22 LR ammunition Barrel Length/ Velocity 28 1095 26 1107 24 1119 22 1129 20 1138 18 1149 16 1157 14 1149 Length will not effect accuracy to any measurable amount. Quote Link to comment Share on other sites More sharing options...
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