Scope/shorten barrel on Schmidt-Rubin K31 ??????
I recently bought a swiss Schmidt-Rubin K-31 karabiner 7.5mm rifle (maybe more than one) and I wonder what it would cost to have a gunsmith shorten the barrel to the minimum legal length? Or can a gunsmith even shorten ANY barrell? I understand that it involves much more than just a nice clean cut and polish. I understand that if ALL the lands and grooves do not stop at the same percise point, the bullet leaving the barrel will be "tilted" and you will never have good accuracy.
Also, since this round, from the ballistics table seems to have one of the best and most powerful ballistics of most of the WWII military rifles, I would like to put a good and powerful scope on the rifle for some seriously long-distance paper-punching. Since the rifle has a straight-pull bolt and therefore the bolt handle and the safety will not interfere with a scope, one would think it would be quite easy to scope such a rifle. Not true, because like the M-1 Grarand, it ejects straight up and a scope mounted directly over the bore would be impacted by the empty shell casing being ejected. So I understand that, as with the M-1 Grarand, the scope must be mounted somewhat off-center (to the left) of the bore. I am guessing that this would negatively effect long range shooting. If this is true, can that defect be off-set by "tilting" the rifle to the 2 o'clock position and "tilting" the scope to be usualable in the position? Or is their another solution? I would love to be able to take this rifle to the range and out-shoot long distant shooters using $1,000.00 rifles when I only paid $89.00 fof mine.
Quote "Somehow government decided that the Constitutional Bill of Rights has become the Bill of "Suggested" Rights and are to be rationed to the citizens as the power elite sees fit"
Also, since this round, from the ballistics table seems to have one of the best and most powerful ballistics of most of the WWII military rifles, I would like to put a good and powerful scope on the rifle for some seriously long-distance paper-punching. Since the rifle has a straight-pull bolt and therefore the bolt handle and the safety will not interfere with a scope, one would think it would be quite easy to scope such a rifle. Not true, because like the M-1 Grarand, it ejects straight up and a scope mounted directly over the bore would be impacted by the empty shell casing being ejected. So I understand that, as with the M-1 Grarand, the scope must be mounted somewhat off-center (to the left) of the bore. I am guessing that this would negatively effect long range shooting. If this is true, can that defect be off-set by "tilting" the rifle to the 2 o'clock position and "tilting" the scope to be usualable in the position? Or is their another solution? I would love to be able to take this rifle to the range and out-shoot long distant shooters using $1,000.00 rifles when I only paid $89.00 fof mine.
Quote "Somehow government decided that the Constitutional Bill of Rights has become the Bill of "Suggested" Rights and are to be rationed to the citizens as the power elite sees fit"
0
-
The minimum LEGAL length for a rifle barrel is 16".
Your going to have to trust me on this. You shorten a K 31 barrel to 16", with full power ammo ( 173 grain bullet, 2570 fps ), the muzzle blast will make your ears ring & your eyes water. Not a good idea.
0 -
According to my good Swiss friend Rudi of Bern (a beautiful Swiss city and you should never waste your time in Zurich) the Swiss fielded at least two variations of the K-31 rifle equiped with optical sights going as far back as WWII. Each variation had a scope off set mounted on the left side of the receiver and the scopes themselves could be folded down when not in use. A later up date of these rifles had barrels fitted with a LARGE muzzel brake and heavy sniper style stocks. I've never seen an example of either type in this country, although there may be a few held in private collections somewhere.
Mark T. Christian0 -
thanks rufe-snow for that info. But with ear plugs in my ear canals and shooting muffs and shooting googles I feel confident I can handled any hand-held firearm. But I will be careful. What about my question of if a gunsmith can actually and effectively shorten a barrel?
Mark, always glad to see a posted answer to almost any question posted by you. But don't you ever sleep? I am starting to think you are some kind of computer program setup on a NORAD computer programmed to catch and respond to question such as this.
Quote "Somehow government decided that the Constitutional Bill of Rights has become the Bill of "Suggested" Rights and are to be rationed to the citizens as the power elite sees fit"0 -
Hey Fox!, I gotta go with Rufe on this one. That thing will blow a fireball out the end that will leave you blind for a follow up shot and get you dirty looks from the guy at the next bench. Any smith with a lathe can shorten and crown the barrel for you. I saw offset mounts like Mark was talking about somewhere in my net surfing. May have been gunparts inc.
"Aim small...Miss small"0 -
GRAF AND SONS latest catalog has 3 differant purpose built low mount, left of the reciever, offset scope mounts that are based on the original sniper rifle design, but allow use of modern standard rings, and even a weaver style rail. they also carry a rear diopter front match globe olympic style target sights that accept all ANSHUTZ and GHEMAN accsesories.
you could also utilize a long eye relief, scout style, pistol scoped set up that mates with the rear battle sight.
i would not cut down your rifle. there were some shorter "engineer / pioneer" carbines produced, but i have never handled one.
i have seen 20" BBL`d carbines converted to .30-30 WCF. they were set up for deer hunting, and were made sometime in the `50s in PA.
best regards, mike.
What other dungeon is so dark as ones own heart, what jailer so inexorable as ones own mind.
contact me at the shop at waltsgun@aol.com best regards, mike.0 -
quote:Or can a gunsmith even shorten ANY barrell?
Yes a gunsmith can shorten a barrel. I just had a M44 cut down to 16 1\2 to make a scout rifle it cost 20 bucks. Just make sure he re-crowns the muzzle but any decent gunsmith knows this.
Guns kill people like spoons made Rosie O'Donnell fat0 -
thanks everybody for the replies!
Quote "Somehow government decided that the Constitutional Bill of Rights has become the Bill of "Suggested" Rights and are to be rationed to the citizens as the power elite sees fit"0 -
Shortening and recrowning is no big trick. Any actual gunsmith (as opposed to a kitchen-table parts-swapper) should be able to handle the task.
Scrappy Doo sleeps with the fishes.0 -
One thing not mentioned in any of the above responses - is the SIGNIFICANT velocity loss that accompanies shortening the barrel - to 16 inches. Having done this with several Rem 740 series semi-autos in 30-06 (the ballistics of the '06 and the 7.5 Swiss are remarkably similar) you can expect a 400 to 600 fps drop in muzzle velocity. Yes the blast is AWESOME. But they sure get handy.
Best.......!0 -
MAD DAWG; that was some good information. For some reason I just like the idea of a shortened K-31 and I feel it already has great muzzle velocity that it can stand to lose 400-600 fps and still be a hard-hitting round out of a short rifle. Kinda like my Mosin-Nangant carbine with the 16 & 1/2" barrel measured from the start of the barrel in front of the chamber to the end of the barrel.
BTW, is that the proper way to measure barrel length??
Quote "Somehow government decided that the Constitutional Bill of Rights has become the Bill of "Suggested" Rights and are to be rationed to the citizens as the power elite sees fit"0
Please sign in to leave a comment.
Comments
10 comments