22lb Wolff recoil spring has tamed EAA/Tanfoglio Witness Hunter 6" 10mm ejection

[Arizona_Mike]

Took the big 10 out yesterday and it was throwing casings into low earth orbit instead of geosynchronous orbit. Recoil was nice and mild even with the hot and heavy Underwood loads.

180gr XTP Underwood was landing about 10-13 paces away to 4:00. PPU FBI-level loads were going 8-12 feet to 2:30 (previously 25 or so feet to 2:00 with the 6.5kg spring).

I had one FTF with the XTP and I can't be sure my 2nd hand did not hit the slide stop. I should have paused to inspect closely but my hands did their thing without conscious thought and got the gun back into battery. The PPU is probably the mildest bulk I'll ever shoot and it seems 100% reliable so no need to go down ti the 20lb spring. The springs act 2lb lighter on the long slides anyway.

I've got 200gr Underwood on order but it did not arrive in time.

The 6" barrel makes it a very comfortable gun to shoot.

Mike

 

[murf]

10-13 paces would be 30-40 feet. that's a lot of feet; of course, underwood ammo is at the top of the velocity pile. has the stiffer spring helped in the accuracy department? have you noticed any frame battering, or does this gun already have a spring buffer?

i put a 21 lb. spring in my glock 30 (along with a fully case-supported after-market barrel) so i can shoot +p++ stuff. i noticed about a third reduction in case ejection distance with the hot stuff. surprisingly, that spring still allows jam-free ejection with normal 45 acp loads.

i can't say the glock is "comfortable to shoot" with the heavier spring, but it beats blowing the gun up with the heavy loads.

luck,

murf

 

[Arizona_Mike]

I dont think there's is any difference in accuracy. The Hunter recoils less than my Glock 20. The Hunter had a huge spacer that makes the spring travel about the same as the 5" barrel long slide and gives a large slide contact area.

Mike

 

[murf]

sounds like the spacer acts like a huge spring buffer. that will probably save the frame. a bit more weight over the glock is probably why it recoils less.

the reason for the accuracy question is that a heavier spring will keep the barrel and slide together longer in recoil.

looks like you have a winner here. enjoy!

murf

 

[Arizona_Mike]

I'll have to see what my velocity standard deviation is. Underwood recommends a stronger spring if the standard deviation is over 50 feet per second.

I really don't have a stronger spring option.

You can see what the spacer looks like about 4 minutes into this video:


Mike