Kieth,
You have a "magnum" barrel. All the 26" barrels were rated as "magnum", even the older ones with the 7/8" breech plugs. I don't think it was ever a strength issue at all, just that it is easier to burn more powder in a longer barrel. My 2003 SS Huntsman with the 7/8" breech plug and 24" barrel is not rated as a magnum. The loads in the manual states:
These loads are recommended for optimum accuracy. Exceeding them is not likely to increase performance and can result in higher pressures and unsafe conditions. Do not exceed propellant manufacturers' recommendations. Loads recommended for FFG black powder may also be used for Pyrodex RS on a volume basis. This rifle is designed to use #209 primers.
It then goes on to list the recommended loads as follows:
Conical bullets
Projectile Weight (grains------------------Black Powder Charge FFG (grains)
250-390-------------------------------------90
400-470-------------------------------------80
Saboted bullets
Projectile Weight (grains------------------Black Powder Charge FFG (grains)
200------------------------------------------100
240------------------------------------------100
Can someone with the "MAGNUM" barrel please publish the RECOMMENDED loads from the Qwners Manual?
The 2004 26" magnum barreled NEF Sidekick and NEF Heritage (Cabelas Exclusive w/Mossy Oak synthetic stock and forend) had the 7/8" breech plugs so it can't be a breech plug issue. In 2005 NEF came out with the 5/8" breech plug and of course it should be stronger because it leaves a lot more meat at the breech end of the barrel.
I have shot the 300 grain SST/Shockwave with 85 grains 777 FFG, 200 grain Shockwave with 100 grains BM'3, 430 grain White Super Slug with 80 grains 777 FFG (elk load), 460 grain No Excuses with 80 grains 777 FFFG and everything in between in my 24" barreled non-magnum rated Huntsman. I don't shoot any more powder than I can burn anyways and I have never felt undergunned. :grin: