I'm not sure. I was told that the length was 2.5 but when I first got it I fired a 2 3/4 shell + it functioned just fine.No point in buying specialty shells when standard will work.Any input always welcome.
Use the proper length or have a competent gunsmith lengthen the chamber. It is a bottleneck of pressure shooting a 2 3/4 in a 2 1/2. It can be done but it is unwise. Buy some 2 1/2 from RST and be safe. (just my 2 cents)
Originally posted by basser: Use the proper length or have a competent gunsmith lengthen the chamber. It is a bottleneck of pressure shooting a 2 3/4 in a 2 1/2. It can be done but it is unwise. Buy some 2 1/2 from RST and be safe. (just my 2 cents)
Actually, the 'bottle neck' theory has been disproven by several studies. The problem is, in fact, that USA SAAMI standards allow higher pressures than most Brit and many other shotgun manufacturers design and proof for. The difference in cartridge hull length between and RST 2-1/2 cartridge and a Winchester AA is about 1/16". This will not intrude on the forcing cones enough to cause pressure spikes or other problems.
I regularly load lower pressure 2-3/4" hulls and use them in my 2-1/2" chambered double guns.
Posts: 874 | Location: S. E. Arizona | Registered: 01 February 2019