I have one, it's my primary coyote rifle, originally a Swift, now on barrel no.3. It will pick up about 100-150 fps or so over the standard Swift, with better case life and a bunch less trimmming. Mine is a 1 in 12, so I don't shoot the ultra heavy bullets, although I imagine the 9-inch twist would work and shoot 55's very well also. I've not seen overstabilization of a shorter bullet be much of a problem. Mine is a custom 700 built many years ago by Ed Brown, and now has a Douglas barrel and will shoot .3 pretty much always, and has gone as low as .190 at 100 yards.
A shot not taken is always a miss
Posts: 2788 | Location: gallatin, mo usa | Registered: 10 March 2001
Look on SMALL CALIBERS Forum for a photo of mine. Use standard Swift data to start. You may not see much inprovement, depending on your brand of brass and it's capacity compared with the Swift.
Originally posted by mr rigby: It sounds pretty much like the 5,6x57 RWS which i have , that can send a 50 grs bullet in 1200 ms! and a 75 grs bullet in 3410 fps.
Sorry, but no. The 5.6x57 is a 7x57 necked down and the 220 Swift is based on the 6mm Lee Navy. The LN case is .445 case diameter, as opposed to .470 for the 7x57.
They will last at least 4-5000 rounds. I think the last one had 4000 or so and would still shoot 3/4 inch groups although the first three inches of the bore looked like snake skin. It was a solid .5 rifle in its prime. The current barrel is a Douglas, as was the 2nd, the others were Shilen barrels. The others were standard twist, this is 1 in 12 and is the best shooting one of the bunch. I load 47 grains of H414 with a 55 Sierra for right at 4000 fps. 43.5 grains was always the limit with the standard .220 and would go 3850 fps in most rifles.
A shot not taken is always a miss
Posts: 2788 | Location: gallatin, mo usa | Registered: 10 March 2001
