I have been looking at getting the marlin 336C in .35 rem. as this is the only current production rifle available in the .35 rem, right?Right.
I do own an old 760 Remington in .35 Rem and I am looking to retire it, but I don't want to give up using a .35Sell it to me. I'll keep it healthy and going strong.
How accurate? Do they jam? Do they cycle fast?Accurate as you need; 1-2 MOA within it's range limits. Jams? Not in my experience, since you are the motive force. Stroke it true and it works. Fast cycling? Now why would that be a worry, for those quick "follow ups?"? Friend, if you are happy with the speed of your pump rifle, you can do as well as with the Marlin.
What you DO get with the old 760 is inches of useful barrel and a stronger action. The .35 Rem, as loaded nowadays, is only a shadow of it's potential and to make matter worse it's put up in a stubby 20" tube. Working pressures keep going down, too, as the old guns it was first chambered for age. Currently it's down to 35,000 cup from a former 38,000. I suspect it was once even higher, as Remington used to have an Express loading that one can only wonder at.
NOTE: The following is only my opinion.
Having said all that, I suggest that in strong actions like the Marlin, 40,000 cup + isn't un-doable. It's going to be a tad higher with the 760. The brass is plenty stout so as not to worry, and the bullets range all over, from .358 pistol bullets on up to 200gr SP. Stout loads on the order of 2300 + fps are easily done and are hell on deer. Buffalo Bullets offers a 220gr lead bullet at an advertised 2200fps - they aint doing that with compressed air!
Better yet, it really is very versatile and is a reloaders silk purse. This only grows better in the 760. Loads that start to be edgy with the 336 are meat for the 760. To be fair, the 336 IS a nice piece of work and you should try one. It will be a culture shock for you, though, so be ready for that. It is stout and stiff, where your 760 is long and silky.
If you are not a reloader and shoot only factory ammo, then keep the ranges under 150 yds and shoot the Remington 200 gr Core-Lokt or the Hornady LeveRevolution ammo. Either will knock 'em down thumpin' good.
I have 2 Marlin .35 Remmy's and I like them. One I use for light, "plinky" loads with pistol bullets and lead pills - the other I just obtained and hope to work up max loads in, using SPEER 180 gr bullets and a heap of H335 stuffed in the case. If only they had a 22" barrel on them... Oh, and I would LOVE to work with the 760, too (hint, hint
)