I have an SVT 40 that was suffering from FTE. I disassembled and cleaned the entire rifle to make sure there was no debris affecting the extractor. A little further research showed there was an adjustable gas port. I played around with the settings making sure each was lined up correctly and it only ejects on the 1.7 setting. That is the highest setting. I was wondering how normal this is?
Svt 40 fte
- Thread starter DaveM
- Start date
Dave. Thats not normal at all. Even on low settings the empty case should partially eject with S&B loads, they are hotter than surplus loads. When I use 185gr S&B for hunting, I have my gas port on the second lowest setting.
I'm thinking that you either have a blockage going into the gas port from the barrel, or you have some extra resistance in the action. Its not unusual to use a 2x4 or a rubber mallet open the bolt to eject a case when the gas port is set too low, but you should have some partial ejections between the lowest and highest settings.
I'm thinking that you either have a blockage going into the gas port from the barrel, or you have some extra resistance in the action. Its not unusual to use a 2x4 or a rubber mallet open the bolt to eject a case when the gas port is set too low, but you should have some partial ejections between the lowest and highest settings.
Exactly what I am thinking. I had a partial ejection at 1.5. Any ideas on how to clean the gas port without damaging it? The bore is dark. I know why it is (Not my doing) but it suffered from FTE when the bore was good. There is not much for lube on the rifle right now. How much lube should be on the rails of the receiver? I had to use a lot of lube on the op rods on my Garand's. Is this an issue with the SVT 40 too?
Look to the gas port first, Dave. If its clean , unclogged and tight, then try taking the springs out of the receiver just to see how smooth it cycles by hand. The fact that it is able to operate a full cycle on the largest port tells me that everything works. Something is partially blocked, plugged or is creating extra friction to impair proper cycles at lower pressure.
Evening guys. I cleaned the regulator and gas port with carb cleaner. Now it's extracting reliably at 1.5. I had a partial extraction at 1.3. So there is a noticeable improvement. At 1.3 I noticed the brass was still cool to the touch and extracted easily by hand. No whackin' the bolt handle with a 2x4. The extracted brass on 1.5 however was too hot to pick up initially. I did lube the rails with oil but in the next session will try dry graphite. From my reading it sounds like 1.3 is the ideal setting for everyday use. Any thoughts fellahs?
1.5 is good. Of the 3 svt i have, the 1 i use run at 1.5 all year long,hot summer and very cold winter without problems. Another thing to keep in mind is that variation exist between svt 40, some will run perfect at 1.3 and some will require 1.5 or even 1.7 in somes situations but usually,1.5 should be the highest setting ever needed.
Jocelyn
