Globe mohawk 303
- Thread starter megaskilz
- Start date
SVT mag will fit but may not feed properly due to the fact that rim and body diameter of the 303 are somewhat less than the 7.62x54. Likely little problem to crimping-in the feed lips on an SVT mag; I run a 303 mag in my own SVT with little trouble.
The 555 was built FROM Finn capture SVTs, which accounts in part for the rarity of authentic Finn SVT rifles. Globe bought ALL that were surplused and went to work on them to produce a nice, quick-handling 303 semi-auto sporter.
BIG problem with the 555 is that the gas pistons were shortened radically, accounting for an abnormally-high port pressure. I have seen the wreckage of a 555 which slam-fired itself to death in an UNLOCKED condition; bolt velocity was so high that the Ejector actually cut a SLOT through the rims of the cartridges while the body actually straightened-out during the firing process.
Be aware of the problems, Friend, then solve them and you will have a great rifle!
You may be able to cut down port pressures by installing a set-screw at the new gas-port, then drilling through the set-screw to give yourself a REDUCED quantity of gas for the operating system. Remember, also, that the original SVT had an ADJUSTABLE gas system.... and it was transferred over, unchanged, to the 555.
I don't have a 555 myself, but thoughts run in the direction of very quick powders and light bullets. Slow powders and heavy bullets WILL give you more port problems than you want to try to solve.
What I DO have is the very LAST unmolested Finn-capture SVT that Globe had when they shut down their program. It is a Tula 1940 with the 6-port muzzle brake and it is an absolute alphabet as far as numbers are concerned; the Finns ran these critters hard. Fortunately, the chrome bore has lasted very well indeed and, despite all the abuse it has sustained, looks perfect today.
The 555 was a GREAT idea that did not QUITE succeed. Today they are rarities.
The 555 was built FROM Finn capture SVTs, which accounts in part for the rarity of authentic Finn SVT rifles. Globe bought ALL that were surplused and went to work on them to produce a nice, quick-handling 303 semi-auto sporter.
BIG problem with the 555 is that the gas pistons were shortened radically, accounting for an abnormally-high port pressure. I have seen the wreckage of a 555 which slam-fired itself to death in an UNLOCKED condition; bolt velocity was so high that the Ejector actually cut a SLOT through the rims of the cartridges while the body actually straightened-out during the firing process.
Be aware of the problems, Friend, then solve them and you will have a great rifle!
You may be able to cut down port pressures by installing a set-screw at the new gas-port, then drilling through the set-screw to give yourself a REDUCED quantity of gas for the operating system. Remember, also, that the original SVT had an ADJUSTABLE gas system.... and it was transferred over, unchanged, to the 555.
I don't have a 555 myself, but thoughts run in the direction of very quick powders and light bullets. Slow powders and heavy bullets WILL give you more port problems than you want to try to solve.
What I DO have is the very LAST unmolested Finn-capture SVT that Globe had when they shut down their program. It is a Tula 1940 with the 6-port muzzle brake and it is an absolute alphabet as far as numbers are concerned; the Finns ran these critters hard. Fortunately, the chrome bore has lasted very well indeed and, despite all the abuse it has sustained, looks perfect today.
The 555 was a GREAT idea that did not QUITE succeed. Today they are rarities.
Hi Smellie!
Not only rarities but have you seen what people are asking for the things lately?? Like they're some kind of rare, valuable milsurp...
If it were me, I'd consider just using a set screw or weld to close the gas port right off. Turn it into a manual bolt action. It wouldn't be as fast but at least you wouldn't have the above problem. Since the things were never properly developed in the first place.
Last edited:
KotKotofeich
CGN Ultra frequent flyer
- Location
- Ottawa Valley
Not interchangeable but easily convertable. The only difference is feed lips length. 303 _will_ jam from a regular svt mag. Vice versa will be fine though - 7.62x54 will feed from a Mohawk modified mag. If you do pick it up, feel free to pm and I'll measure the exact length. If you don't - send him my way
Keep in mind that the mohawks were of varying grades of finish. Also some were so badly mistreated they are a pain to make work - I had one with a bent AND rusted solid piston rod - bent so much it would jam in the piston... rusted solid so it could not be removed... Was a serious pain to get it fixed... but much knowledge was gained in the process
Keep in mind that the mohawks were of varying grades of finish. Also some were so badly mistreated they are a pain to make work - I had one with a bent AND rusted solid piston rod - bent so much it would jam in the piston... rusted solid so it could not be removed... Was a serious pain to get it fixed... but much knowledge was gained in the process
maple_leaf_eh
CGN Ultra frequent flyer
Prowl the interwebs and Exchange for another Globe Mohawk, this time with a magazine. One will support the other when you break or lose parts. Remember, they're not making anymore SVT40s and Globe Firearms was located under what is now the Vanier Parkway in Ottawa.
Have you seen the stainless SVT-40 gas cylinders out there?
ht tps://www.huntinggearguy.com/equipment-reviews/svt-40-stainless-cup-piston-aftermarket-recoil-springs/
ht tps://www.huntinggearguy.com/equipment-reviews/svt-40-stainless-cup-piston-aftermarket-recoil-springs/
Not interchangeable but easily convertable. The only difference is feed lips length. 303 _will_ jam from a regular svt mag. Vice versa will be fine though - 7.62x54 will feed from a Mohawk modified mag. If you do pick it up, feel free to pm and I'll measure the exact length. If you don't - send him my way
Keep in mind that the mohawks were of varying grades of finish. Also some were so badly mistreated they are a pain to make work - I had one with a bent AND rusted solid piston rod - bent so much it would jam in the piston... rusted solid so it could not be removed... Was a serious pain to get it fixed... but much knowledge was gained in the process
Last edited:
