Hi all

Can someone tell me

1. the interior length of a mk77 short action magazine?

2. The COL for a .260 Rem

3. The COL for a 6.5-284

4. The COL for a 6.5 WSM

5. if either of the last two would be a feasible rebarrel proposition for the mk77 short action?

Thanks

Jim B.

I didn't get a chance to measure mine last night. As I recall, you can load to a COL of 2.9".

I think you need to look at the overall package, project, and what you are after. From what I've seen, you really need a long barrel, ie 26" to take advantage of a WSM case. That and you are likely looking at a custom reamer and dies. The 6.5X284 has standard reamer, dies and brass, and really achieves about all you can in a SA shorter barreled ~22" rifle.

Depending on source:

260: 2.750-2.780
6.5X284: 2.795-2.800
6.5X300WSM: 2.760-2.860

Have a short action remington 722 - same lenght as current M700 that was chambered for a 257 Roberts and I rechambered it for a 25-284 back in 1965 - only modification required was to cut the chamber - magazine reduced from four to three cartridges. 120 gr bullets were seated deep but no big problem - would generate 3100 fps with 120 gr and 3400 with 100 gr out of the factory 24" tube. I would expect though that the 140 gr in 6.5 would be stuffed way far down the case - need someone who has one of these to speak out about that 140 gr in a short magazine.

The duck season is over and the range should be opened up - unless its pouring I'll be out there Friday.

Friday sounds good to me too.

Morning or afternoon?

Jim

will take the little woman to work at 8:30 then me and the "dog" are headed to the range - have a couple of new rifles to check out (9422 in 22 mag and 10/22 ) and the 270 and 338 need sighting in - new scope and mounts - I'll bring the chrony too - hope to see you there. I have a little mdical issue to take care of - only thing that will stop me from being there.

My Ruger 77 SA in 257 Roberts will accept cartridges to a max of 2.98", but it depends on the bullet. With some bullets the depth to the rifling is shorter then the magazine box length. - Dan

Jim B - hope you read this - the Swan creek range will not be open for another two weeks - they are installing roofs over three of the lines - in Alabama that is a good thing and worth the wait.