What fps do you get with these?
Quote from: 45flint on August 01, 2017, 01:26:12 PMWhat fps do you get with these?Steve, I've had several Mk 3's over the years. The majority you will find are in .22, and be advised those are made to the old British "No. 2 Bore" standard, a true 0.22 inch, or about 5.6 mm, slightly bigger than most modern pellets which are made to metric 5.5 mm size. The best ammo in those is usually the old "blue tin" 5.6 mm Eley Wasp. Mk 3's in .177 are more tolerant of modern pellets, though.The velocities are all averages of 15-shot strings.Serial 192xx, an old .22 that I've used various springs in: 537 fps with Wasps. Got 553 fps with Hobbys but they dieseled like crazy due to loose fit.Serial A76XX, a .177: 720 fps with Superdomes, 774 with Hobbys. Very newish condition, probably dieseling a bit.Serial B59xx, a .22: 453 fps Wasps, 509 fps Superdomes, 587 fps Hobbys.Serial F4XX, a .177: 590 fps Superdomes, 620 fps Hobbys.Serial A25xx, the .177 Supertarget I posted earlier: 646 fps Hobbys, 630 fps Lapua Marksman, 622 fps Eley Wasp.I've never chrono'd the .22 in my post here but it's quite strong and smooth, apparently had a good tune as I mentioned!