The 410 slug – mcb homis gasco abu dhabi contact


One other minor issue with 410 slug as a cartridge is slug construction. Slug gas mask art manufactures do us a disservice by making them from very soft pure lead or soft lead alloys. Combine the soft lead with the hollow base design of the foster slug (see cutaway picture below) and the result is a very fragile projectile. A harder lead alloy would solve much of this frangibility problem. Brenneke’s version of the Foster slug with its integrated polymer gas seal appears to be made of a hard alloy. Remington sluggers that I have fired into a soft clay creek bank have rarely been found intact in my testing. Federal slugs fair better, being a bit heavier they have thicker walls thus making them a bit tougher but still deform badly. The Brenneke slugs resist deformation the best of the three showing very little deformation when recovered from the gas tax clay bank and should perform best for penetration when used on deer size targets. Alias, my attempt to test them on the real thing this fall (2004) deer season failed.

Accuracy? Yes in most 410 shotguns 410 slug accuracy is horrible. And this IMHO is a far bigger issue then kinetic energy when hunting whitetail deer. I don’t believe that accuracy is the fault of the cartridge or for that matter the fact that they are fired down a smooth bore. The prime suspect in my study of 410 slug accuracy electricity generation capacity is the chokes most 410 shotguns have. The large majority of 410 shotguns have a full choke; this is done in an attempt to stretch the range of the very light thin shot pattern the 410 throws. This tight choke makes for a horrible slug gun. The next most common choke in a 410 is modified and the modified choke is only slightly better for shooting slugs but still usually result in mediocre accuracy at best.

The common suggesting when firing fosters slugs is always to say that Improved Cylinder is best. And for many guns this is an acceptable choice but that is because they often to not have access to the best choice. That best choice IMHO is Cylinder bore, not Improved Cylinder, Skeet or anything else; a fixed cylinder bore is better than a Cylinder choke tube.

Think of it this way the fosters slug under the pressure of the propellant gasses has the hollow base swell up to bore diameter as it accelerates gas in california down the barrel, then just as it is reaching maximum velocity near the muzzle end of the barrel it runs head long into 0.5 – 3 inches of barrel with tapering constriction. In the case of choke tube it even worst as there is usually a slight step to a larger diameter before getting to this constriction. This sudden deformation of the already expanded slug has to mess with its exit trajectory.

A fixed cylinder bore allows the slug to expand to bore diameter in the forcing cone and gas key staking tool then exit the barrel with no changes to the slugs size or contact patch with the barrel through the entire trip down the barrel. I believe this will nearly always give you your best accuracy with a foster style slug but not many guns out there have a fixed cylinder bore and thus you rarely hear it suggested.

The other important factor is the slug fitting the bore. Many manufactures make their slugs significantly under size to ensure that their slug passes power generation definition through a tight choke with the least likelihood of over-stressing even the thinnest and oldest of shotgun barrels. This results in slugs that have to stretch their base diameter a lot to seal against the bore. It’s tuff to ensure the expansion happen uniformly around the base and a non-uniform expansion effects accuracy. A slug that is already close to or even just slightly larger than bore diameter will give the least distortion as the slug expands to bore diameter and thus add to the accuracy.

I have fired a lot of slugs in my Winchester 9410 and despite advertising by Winchester it does not have an improve cylinder choke that shoot like a full choke gas finder. My gun as measured has a cylinder bore. There is no constriction and the only anomaly is a lightly etch ring about 0.050 inches thick about half an inch back from the muzzle. This ring has been there since I bought the gun new. The gun patterns shotshells about half way between Skeet and Improved Cylinder. The barrel does shoot slugs very well as seen in some of the follow example groups.

The Remington and Brenneke slugs shoot very well for a smooth bore. I believe this is due to the cylinder bore of the gun (My Winchester 9410) they were tested in and their large diameter. Remington typically measure in the 0.400-0.405 inch range in the few I have cut open. The Brenneke typically measure in the 0.412-0.415 inch range and I have cut many of these open in the process of cutting them down from 3 inch to 2.5 inch so they will chamber electricity video ks1 correctly in my 9410. Federal slugs shoot poorly and they have the smallest diameter measuring about 0.395-0.399 in the few I have cut open.