Originally Posted by WalterGA
I don't quite get the point of this reply, particularly the part in red. Every manufacturer warns against the use of reloads, for OBVIOUS
reasons, so I'd assume I'm missing something?
This is a copy and paste out of the Bushmaster manual, illustrating there is no language regarding steel casings (specifically) voiding any warranty. Other manufacturers state specifically that steel cases are a bozo no-no. Confirming Robo's post for any one in doubt. Sorry about not offering a more detailed explanation.
Here is the exerpt from the DPMS manual:
Due to a number of calls and comments concerning AR-type rifles, we have incurred
feeding problems with the following:
A) 1. Israeli ammunition
2. Korean ammunition
We have heard and reviewed several reports of problems with many manufacturers’ rifles
using this ammunition. The problem appears to be the bullet contour and the overall
length of the cartridge, which is contacting the rifling before firing. This is creating a gas
port pressure and chamber pressure higher than recommended, therefore causing
feeding and extraction problems due to the increased bolt carrier velocity. In addition,
there is accelerated fatigue on internal parts. There are also indications that brass may be
oversized, which could create an unsafe condition.
B) 1. PMP
2. South African produced surplus
We have used this ammunition in the past for testing purposes and found that the brass
is extremely soft and can “flow” into microscopic pores and grooves in the chamber,
creating “sticky” extraction. This had been reported in many types of rifles, but is more
prevalent in semi-automatic weapons.
C) Lacquer Coated Ammunition or Steel-cased, lacquer coated ammunition
The problem with this ammunition is the lacquer coating on the case. As the barrel heats
up, the lacquer turns to a soft, varnish substance and upon cool down, becomes very solid
and difficult to remove. This effectively creates an undersized chamber and creates
DPMS recommends the use of high quality, domestically produced ammunition for best
results and highest accuracy. For plinking and practice, we recommend only domestic,
commercially manufactured ammunition or high quality surplus NATO specification
ammunition. Please note that the use of re-loaded ammunition voids the factory
warranty as well as the use of the above-mentioned types of ammunition.
Even though you felt it necessary to emphasize the obvious,
the manufacturer includes the obvious with each and every rifle.