BSA Airsporter MK2 Questions

[bobs65]

I have a rebuilt MK2 and was wondering what I should expect the muzzle velocity in 22 cal should be.  Also would like to mount a Leupold Rifleman 3-9x40mm scope, but am having difficulty find mounts.  Any suggestions would be great.

[grauhanen]

It's hard to predict the MV of this rifle without knowing a little more about it.  How old is it?  Was it made for the UK market?  It may well have been originally a 12 foot pound rifle with a leather seal.

[bobs65]

The MK2 was made between  59 - 65, and for the UK market (as far as I know).

[grauhanen]

The power level of the rifle when new is probably less than 12 foot pounds.  At 12 fp a 14.3 grain pellet (a typical weight) will go about 600 fps.  While it may be possible to use a more powerful spring, it must be kept in mind that the rifle was designed to operate within certain power-level parameters, meaning it might not handle a much stronger spring.

[bobs65]

Thanks for the info.  Now to find scope mounts.  I understand normal 15mm mounts will work on the 17mm groves that are on the BSA MK2.  We'll see.

[grauhanen]

For 17mm dovetails, see if you can get Sportsmatch Model TO50C rings http://www.sportsmatch-uk.com/1-diameter-body-tube-medium-range-for-15mm-and-17mm-dovetails-up-to-50mm-lens-diameter-includes-removable-arrestor-pin

[bobs65]

thanks for the lead.  Will check it out.

[bobs65]

Found source in England for mount TO50C,  only about $35.  BUT, shipping = $60.  Search continues.

[Supaflee]

My old BSA Airsporter .22 cal shoots 13.8 grain round head pellets at : Average FPS 449.82
                                                                                                                Extreme Spread  34.9FPS
                                                                                                                Energy , Ft/ Lbs 6.2
 Zero is 10 metres and again at 15 metres with only minimal rise between the zeroes .
 POI is 10mm below sight line at 19 metres .
 This is pretty good for an old rifle , I shoot rabbits in the head frequently with it ,,, and they dont run away.
 Regards Supaflee

[bobs65]

Found some 17mm x 1" mounts on eBay for $8, shipped to USA.  They are from China (?), but for the price I think it's worth a try.  Should be here Tuesday, I'll let you know.