Home Forums Hunting & Shooting Custom Rifles & Wildcats 6mm Dasher

That makes sense; thanks for answering!

Outside of competition (read: never running barrel HOT) what do you think max round count would be for a 6-250 vs 6 BR?

EVERYTHING you just said is why the 6BR has been on my short list. My only concern is how it would feed in a 700SA. I've got a crap .243 factory barrel on a 700 right now (fouls like crazy and gives 6BR speed with 10grs more powder). It'd be a great donor for a BR, but I don't really want a single shot, and great barrel life would mean that any feeding problems would haunt me for a long time. IF I could fall in love with a 700 single shot (using a cheap adapter sitting on the follower), then I'd have no reservations with a 6BR.

If going faster than a 6BR, I'd strongly consider the 6mm Super LR. IMO it's what the .243Win should have been with a little more design effort.
There's a good comparison photo HERE

The Dasher is nothing at all like fire forming for a P.O Ackley chamber, the case is supported in a Ackley chamber and nothing is needed but chamber and shoot, with the Dasher there are steps that need to be done in order to fire form, I prefer a heavy Jam, others like a false shoulder and some like both.
Wayne.

Oh and the dies are readily available these days, Redding and Forster, and Wilson are the prefered factory dies, Neil Jones is probably the prefered custom die maker.
Wayne.

Advantages of 6BR far outweigh all disadvantages...
Yes, even works in a sporter weight!


The one pictured is a 8.5" twist Brux #3 in HS stock with an unaltered 700 action. With HUNTING BULLETS (85gr Sierra BTHP) it shoots like this off bipods (all of the six, 5-shot groups shot in about 20 minutes -barrel stayed warm-).

Not shabby for a 7.5# gun & 10x scope. (I wonder what it will do with tuned target bullets & crosshairs that didn't completely cover the dot?)

I have a Wyatts "BR" box in it & it has been nothing but a headache. I finally got it were it feeds reliable but only holds 2 down. I would NOT go that route again. Mucho [bleep] with it to get it "right".

I had the Bryant conversion on another action & it feed good with 3 down but the 4th down would make the round "pop" out. I later rebarreled that action (when I shot out the straight BR) to BRX. After doing that I got to fiddling with the spring placement & now have it were it feeds all four flawless (I had to glue the spring in specific place). I'm not sure if the .1" longer case body helps the feeding or I just got things right but it feeds just as good as any 243Win out there.

Don't overlook the 6BRX. 6Dasher velocities with cheaper 6BR dies & will likely feed easier than the 40degree shoulders on the dasher (if you go the repeater route). I wouldn't be afraid to go straight BR repeater with a tuned Bryant rem bm conversion though.

If you are planning to hunt with it you'll love the #3. However, if your going to do much shooting off a bench or especially if your going to do much shooting past 300-400 yards. I'd go with a bigger longer barrel. The Remington varmint contour is a good comprimise! That's what's on my BRX & it REALLY shoots!!!


Nothing wrong with single shot either but main reason I like a repeater is storage. As long as it will hold just 1 down I'm good. If you NEED the rifle (times when a dangerous crow or groundhog is standing there laughing at you), I don't want to fumble around trying to find a bullet. Jsut grab the rifle & bolt it! SS are for people that can live with missed opertunities.

Pretty good groups for shooting quickly off a bipod.

So if I read correctly, the Bryant conversion will work with some tinkering? Did the action rails need any work too?

A buddy rebarreled a M77 MkII .22-250 to 6BR, and it feeds like a champ. But it's not a push-feed.

I've seen the Bryant converson on 4 Remington 700's personally & all them feed at least 3 bullets with very good success (with the magazine box/spring converision only no messing with feed rails). I have glued the spring on one other box with the conversion for a buddy & it worked fine throught the test I gave it (loaded 4 down & feed them all two seperate times). I think it has been working fine every since (he hasn't mentioned anything about it). I really think the spring placement is THE key to the BR feeding sucess.

I have talked with alf about it a couple time & he has had a few guns set up for the BR case & he doesn't use anything different than the factory BM the way the .478 shortaction comes. IIRC he said "some work some don't but the ones that do work, work fine". I do have another buddy that has a BRX with no modification & he uses his as repeater with no troubles (not sure if he can get 4 down but he says "it works I'm not messing with it").

I think the whole myth about the BR not feeding was from some guys that tried it & it didn't work, so they thought it can't be done. With a little bit of effort you can make them work. You just may need a little trial & error with a little fiddling to boot.

I've read over on sniperhide & soem on 6BR about guys feeding the BR case with great succes through the AI magazines. Some are using modified rails with the 223 size mags & others are using the 308 mags with a filler. I'd like to mess with one...

Thanks for the reply. I spent some time yesterday on this subject, and learned that the DBM (AI mag) route makes the most sense. I'd prefer to avoid the extra $300 expense and have the smooth belly of an ADL, so for ME it'd be worth tinkering (if needed) until either the factory or Bryant conversion worked smoothly. Three down is plenty for me, and four would just be showing off.

I should add that if your going remington bottom metal I highly would suggest BDL floorplate. It makes this SO much easier for adjusting the spring, trial & error fiddling & fixing any problems. Running the above rifle in an ADL stock is the only reason I even tried the wyatts box.

I've never really seen the need for DBM on a hunting rifle really. After 2-3 shots you either need to quit or call for help (dragging).

Thanks again. I can live with a BDL setup, but just prefer the ADL if given a choice. For a tinker-intensive project the BDL would definitely be the way to go.