The rollsizer machines removes the bulge in the base of a fired case to bring the case back into specification to allow reloading. Removing the bulge brings the base of the case back into specification, when combined with the normal sizing dies the case will be very close to the SAAMI specifications.
The full length sizing die cannot reach the base of the case. when cases are rollsized back to a factory dimension the round will feed and chamber reliably. Not every case needs rollsizing, this mainly depends on the chamber in which the case was fired, the powder type and recoil spring used in combination. The most common reason is when cases are recovered that have been used in mainstream carry style firearms with unsupported chambers or looser chambers due to the prerequisite of reliability over accuracy. The brass from these guns can often be re-used but without rollsizing the brass has a very short life and damaged or creased brass is often the result.
Very hard to say, generally much longer than without rollsizing, but too many issues contribute so it is too hard to state exactly. The designer of the rollsizers is a qualified mechanical engineer who gets over 40 reloads with rollsizing with regular starline / federal / winchester brass. There is no evidence of fatigue in the brass with rollsizing from any of the customers who reuse their brass.
Yes, all rollsizing processes require cases to be resized afterwards.The rollsizing only effects the bottom 1/3rd – 1/4 of the case. the normal sizing die will handle the rest.
The resizing process is usually part of the reloading process so no additional effort is required.
Reliability, with rollsizing your ammunition will duplicate factory ammunition in size / shape with much greater reliability.
Rollsizing brass allows multiple sources of brass to be used, for example the “once fired range brass”, the rollsizing will bring all the cases back to a consistent, reliable shape for reloading, your feeding and reliability issues will improve significantly, your accuracy and grouping will also improve. With rollsizing the case shape will be more consistent and it will remove the majority of the “coke bottle effect” noticeable in the 9mm and 40S&W cases. This is critical for the smaller commercial reloading operations who cannot afford to sell poor quality ammunition.
The rollsizer was designed by a qualified mechanical engineer and early examples of the rollsizer have now processed well in excess of 20 million+ cases. The base assembly and roller disc are made from high quality heat treated steel and should last a very, very long time. the rollsizer has been designed to operate with cleaned cases only (using wet or dry processing), wear from processing dirty cases is not covered by warranty. Replacement parts are available upon request.
The machine is very compact but does weigh approximately 60Lbs (27kgs), it is an industrial gearmotor. It could have been smaller but was selected oversize to offer an extremely long life. The machine does not need to be bolted down, it is fairly quiet and you only hear a light tik tik sound as the case pusher returns, most case feeders are substantially louder than the rollsizer.
The rollsizer can be placed on the bench next to your press or under it. The rollsizer is supplied with a long transparent feed tube and is cut to suit your installation. The tube will allow you to divert cases from your casefeeder to the rollsizer and the rollsizer has a discharge tube to direct cases into a drum or other container.
A look through Youtube of FaceBook will show lots of examples of customer installations.
The rollsizer will process up to 6,100 cases per hour (60hz motors) and 5,500 ( 50hz motors) subject to the casefeeder keeping up, for most standard domestic reloading machines we recommend only using 2 or 3 activating posts, this will result in between 1500 and 2600 cases an hour depending on the casefeeder, you can do more but the rollsizer cannot roll it if there is nothing in the feed tube….If you have a commercial grade feeder, install all the posts and keep filling the casefeeder. It’s the same machine for both domestic and commercial.
Yes, the rollsizers will process most pistol and rifle cases up a 308Win (7.62×51 Nato) case. The machine cannot do belted magnum cases. Rollsizer conversions have been made for 9mm, 38S&W, 38Super/38SC, 38Special/ 357mag, 40 S&W, 45ACP, 44mag, 308Win and 223/ 5.56Nato.
Other calibres are being released regularly as required. Calibre conversions are simple, unscrew the centre disc retaining bolt and install the new calibre specific disc, adjust the casefeeder height (in some situations the feed tube to the case pusher needs to change) and you are good to go.
Please order via the ‘Buy a new rollsizer‘ and ‘Buy parts for your rollsizer‘ links in the menu. The rollsizer and needed items will be added to the cart with a shipping fee, you can then proceed to checkout and pay online and your order will be placed. You can also send us an enquiry via the “Contact” page.
Motors for the US / Canadian market will be supplied in 110VAC, 60hz single phase with an earthed pin plug.
220VAC motors are available in the USA as special order and will be supplied without a plug (bare lead).
The machine is supplied with a 12 month replacement warranty for the major components (motor, gearbox, rolling discs and case push assembly). The major components are conservatively sized and the working components are heat treated and should last many years service free, if for some reason something breaks we can replace it but we will require a return to a depot / freight facility (based in the US for US buyers).
The rollsizer is not covered by wear due to processing dirty or poorly cleaned cases.
Some spares are supplied with the machine and include retention springs, activation levers and case push return springs. The activation levers are designed to eventually break if the case push stops moving (i.e. an oversize 40S&W case is dropped in the rollsizer while you are rolling 9mm).