The 783 has a small port, closed top ejection port... similar to a variety of rifles like the Tikka T3, Savage Axis, RPR... which makes it difficult to stuff a bullet into the mag from the "top" (you can still toss a round into the action and chamber). These actions are designed from the ground up to use a det mag, not an internal or blind mag. That closed top makes the action very rigid... a good thing for precision work. Also, helps to keep debris and water out of the action.
Despite the entry level pricing, the 783's are actually made to a higher standard then the 700's have been over the last years. As a clean page design, I feel that Rem corporate is trying to get into the CNC produced rifles and drop production costs yet improve performance, and tolerances.
Been mucking with a number of these rifles over the last couple of years, and am blown away by how consistent these actions are. Materials are no different then the Rem 700 but assembly and fitting is so much better - when just grabbing random rifles - definitely shows how CNC production keeps QC and specs at a very high level with very little time needed for manual fitting.
Actions I have played with have been true, bolt lugs have very high contact (mine are nearing 95% - will lap in just with useage), barrel threads are consistently machined and true with the bolt face, bolt face is square with the lugs.... if this sounds like a custom action, you would be correct.
Trigger is excellent and can be easily tuned for a light pull and crisp break... if the trigger has a hint of creep, the adjustment is done manually.... not hard to do but must be done properly for safe operation. The upcoming Timney trigger should address this... I very much like the factory triggers. I like that the trigger assembly is bolted to the action and doesn't fly apart when removed... making repairs in the field very easy.
I have reported on some of the quirks which Rem seems be addressing in their newer rifles... standard bolt knob is horrid... firing pin springs can be crap.
Accuracy has been superb, easily keeping up with the custom rifles I also own... all with reduced costs and ease of assembly. More aftermarket support is coming.. PT&G offers DBM, and bolt heads (these are very nicely made by the way). Timney will have a new trigger later in the year. Boyds and MDT makes stocks/chassis.
As interest grows (walnut and shorty version seems to be selling well), aftermarket goodies will follow. There are some very forward thinking machining already in the action wrt to using AICS and AW type detachable mags... this machining is not used by the factory det mag so I have to believe, there are a variety of new projects already in the works.
My conversion to an AICS fed precision rifle was straight forward as all the proper dimensions are already built into the receiver.... yes, better then the Rem 700 especially when loading longer then 2.80".
With a little TLC, this is one of the smoothest actions you can operate with some very interesting byproducts of the new bolt/firing pin design. See my articles in my dealer forum, facebook and website.
Like the Savage Stevens 200 of a decade ago, the 783 has some "happy accidents" that shooters will start to realise as they use them in the field and in target shooting.
Hopefully, Rem will not water down or screw up the design as Savage has been doing to their SA's....
Jerry