Effects of chopping a bbl?
- Thread starter jimmyp
- Start date
OldTurtle
Moderator - Deceased
What caliber??,, Under normal circumstances, I'd initially say you won't see much, if any, effect at 300...
I have a Rem 700 SPS ,223 with a 20" barrel and have no problems at that range...Just be sure that the person cutting the barrel puts an 11* target crown on in..
I have a Rem 700 SPS ,223 with a 20" barrel and have no problems at that range...Just be sure that the person cutting the barrel puts an 11* target crown on in..
cal? There have been many test on this...velocity decrease seems to be more pronounced as case capacity vs bore increase. It will handle better.....but...I have the same gun (varmint coutours) in both barrel lengths w/ same stock/scope and in my opinion the 26" is heavier "dah" but "feels" lighter. The 20" feels like a rock. Must be something with balance? I have thought about cutting a 26" 243 down to 24" as I think it may be the best compromise. I am also getting away from varmint barrels in general for calling as they are just too heavy for my liking. I love heavy barrels but they just don't work well for calling IMO. I have recently put the 243 700v away and only use a 700 243 22" sporter, the small diff. in accuracy is easily made up in "HANDLING".
ps. chopping a larger bore hvy barrel 700 all the way down to 20" would probablly hurt the value.IMO
ps. chopping a larger bore hvy barrel 700 all the way down to 20" would probablly hurt the value.IMO
turtle,
quick question, what is the science/math behind 11 deg. crown what about 10,9,12 or 13 not trying to be smart a$$ I have just always wondered? I can tell you why to set the compound rest @29.5 deg when cutting threads but I can't tell you why you should crown @ 11 deg.
Sotex
quick question, what is the science/math behind 11 deg. crown what about 10,9,12 or 13 not trying to be smart a$$ I have just always wondered? I can tell you why to set the compound rest @29.5 deg when cutting threads but I can't tell you why you should crown @ 11 deg.
Sotex
Sorry guys this is a .223 1:9 twist gun. its a heavy bbl gun with the same stock as the sendero, it weighs in at [beeep] near 14lbs with glass and bipod, im hoping to lose a couple lbs by chopping 6in or so of bbl.
My big concern is that I bought this gun as a pdog/paper puncher and while I dont hunt pdog but about a week a year i would still like to be able to punch paper and not rip my hair out at 300-400yds. can I still expect sub MOA? I know every gun will be different, and i have several very capable calling rigs Im just thinking about doing something different.
Jim
My big concern is that I bought this gun as a pdog/paper puncher and while I dont hunt pdog but about a week a year i would still like to be able to punch paper and not rip my hair out at 300-400yds. can I still expect sub MOA? I know every gun will be different, and i have several very capable calling rigs Im just thinking about doing something different.
Jim
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Widow maker 223
Well-known member
All u will loose is weight and velocity. As long as the crown is good, the accuracy should still be there.
coleridge
Active member
A shorter barrel is stiffer & will in theory shoot better (their may not be enough difference for you to be able to tell). Either way, it won't hurt accuracy. In that range of lenths expect to loose ~25fps +/- per inch you cut off. Your "dope" will change very slightly due to slower bullet.
As far as the crown. I had an 11 degree crown on my first 6BR & it always shot great. However, I have had SEVERAL gunsmiths tell me the 11 degree crown is the worst crown you can use. I shoot a lot of competitions & I can not tell you if I have ever seen the imfamous "11 degree target crown" on any rifle that was competative (the only ones you really pay attention to). A flat crown is the best. Since your hunting with it you want to recess a flat crown.
As far as the crown. I had an 11 degree crown on my first 6BR & it always shot great. However, I have had SEVERAL gunsmiths tell me the 11 degree crown is the worst crown you can use. I shoot a lot of competitions & I can not tell you if I have ever seen the imfamous "11 degree target crown" on any rifle that was competative (the only ones you really pay attention to). A flat crown is the best. Since your hunting with it you want to recess a flat crown.
jimmyp,
rem. 700v .223 factory barrel 26" should be 12 twist.
rem. 700 sps tactical .223 factory barrel 20" should be 9 twist.
not sure of the twist on factory 700pss 223 26" it might be 9 twist which would be better for heavier bullets....heavier bullet would prolly benifit from the longer barrel/higher vel. might want to think twice before you cut a 26" 9 twist factory barrel as they are prolly harder to come by than the std. 12 tw. vbarrel. I have several new take off 223 26" 12tw 700v matte barrels and one 223 9t 700 sps tactical 20"......if you cut it and have buyer remorse. also have several 22-250 & 308 barrels 700v 26" new take off but your have wrong bolt face for them.
Sotex
rem. 700v .223 factory barrel 26" should be 12 twist.
rem. 700 sps tactical .223 factory barrel 20" should be 9 twist.
not sure of the twist on factory 700pss 223 26" it might be 9 twist which would be better for heavier bullets....heavier bullet would prolly benifit from the longer barrel/higher vel. might want to think twice before you cut a 26" 9 twist factory barrel as they are prolly harder to come by than the std. 12 tw. vbarrel. I have several new take off 223 26" 12tw 700v matte barrels and one 223 9t 700 sps tactical 20"......if you cut it and have buyer remorse. also have several 22-250 & 308 barrels 700v 26" new take off but your have wrong bolt face for them.
Sotex
coleridge
Active member
Originally Posted By: SoTexjimmyp,
rem. 700v .223 factory barrel 26" should be 12 twist.
rem. 700 sps tactical .223 factory barrel 20" should be 9 twist.
not sure of the twist on factory 700pss 223 26" it might be 9 twist which would be better for heavier bullets....heavier bullet would prolly benifit from the longer barrel/higher vel. might want to think twice before you cut a 26" 9 twist factory barrel as they are prolly harder to come by than the std. 12 tw. vbarrel. I have several new take off 223 26" 12tw 700v matte barrels and one 223 9t 700 sps tactical 20"......if you cut it and have buyer remorse. also have several 22-250 & 308 barrels 700v 26" new take off but your have wrong bolt face for them.
Sotex
Yep, I do believe all the 223 PSS's were 1-9.
I wouldn't worry about hurting the resale value. If you cut it to lenth you want your gonna keep it right... If you cut it & don't like it, then you have an excuse to rebarrel with a better tube!
rem. 700v .223 factory barrel 26" should be 12 twist.
rem. 700 sps tactical .223 factory barrel 20" should be 9 twist.
not sure of the twist on factory 700pss 223 26" it might be 9 twist which would be better for heavier bullets....heavier bullet would prolly benifit from the longer barrel/higher vel. might want to think twice before you cut a 26" 9 twist factory barrel as they are prolly harder to come by than the std. 12 tw. vbarrel. I have several new take off 223 26" 12tw 700v matte barrels and one 223 9t 700 sps tactical 20"......if you cut it and have buyer remorse. also have several 22-250 & 308 barrels 700v 26" new take off but your have wrong bolt face for them.
Sotex
Yep, I do believe all the 223 PSS's were 1-9.
I wouldn't worry about hurting the resale value. If you cut it to lenth you want your gonna keep it right... If you cut it & don't like it, then you have an excuse to rebarrel with a better tube!
nockhunter
New member
Thats 11* from the centerline of the bore. You still need to face the end of the barrel and then the 11* crown. You will never get good accuracy from just a sawn barrel.
Mike
Mike
I've seen hacksawed crowns shoot great - but don't count on it.
People debate the crown shape thing ad infinitum ... 11°, recessed target, sporter radius etc etc etc... All of them work just fine. The key is that its symmetrical about the bore...thats it...and even then, sometimes they shoot great without symmetry.
People debate the crown shape thing ad infinitum ... 11°, recessed target, sporter radius etc etc etc... All of them work just fine. The key is that its symmetrical about the bore...thats it...and even then, sometimes they shoot great without symmetry.
