Wasnt slamming Buck.....I was simply helping him to see his friends error and offering the best advise possible for that particulat problem, which is PRACTICE....
Here is a little research I looked up for some smooth bore slugs that may help...I dont know what you are using but these are some of the latest innovations designed to increase velocities and Bullet Cohefficiant...Though the accuracy has greatly improved they are STILL best at no more than 75 yards for accuracy purposes in the field...Again these are for SMOOTH BORES not RIFLED Barrels.
The Federal TruBall and Winchester’s new Super-X Power-Point rifled slug are designed for smoothbore shotguns. They shoot fairly accurately through rifled bores but the soft lead will skid on the rifling and fill the grooves within just two or three shots, after which accuracy is severely compromised. Brenneke, Dynamit-Nobel, PMC, Fiocchi, Challenger, Wolf and others also offer full-bore designs with attached wads that are designed to be shot through smoothbore barrels.
The Federal TruBall, based on an idea patented by Georgia slug innovator Jay Menefee, is a simple yet ingenious expansion of a 70-year-old design. The typical rifled slug has not changed in a visual sense since ballistician Karl Foster’s design was picked up by Winchester and hit the market in the 1930s. It’s still a cup-shaped dollop of soft lead with “rifling” groves swaged into the outside walls.
The TruBall’s unique design—essentially a polymer ball inserted into the cavity of a conventional rifled slug and driven at 1600 fps by a cylindrical polymer pusher wad—doesn’t make the new slug any more powerful than conventional rifled slugs, but it does make it much more effective.
The TruBall extends the rifled slug’s effective range since the design essentially guarantees concentricity to the bore and, subsequently, truer flight.
The TruBall is not a 100-yard-plus load like the sabots on the market; it’s still a rifled slug. But the unique design improves accuracy to the point that it will be on target at considerably longer range than its short, stubby brethren.
Its Low Recoil version joins the Managed Recoil BuckHammer and Slugger designs, Hastings’ Low-Recoil Youth and Lightfield Lites in the kinder/gentler genre that still provides accuracy and sufficient lethal energy out to nearly 100 yards
I still dont know what Kind of shotguns Your Brother and friend were using, i.e Brand...Action (pump, singshot, Auto loader) How old they are (yes that matters)...All info is needed to accurately formulate a good solution ALONG WITH PRACTICE...I knew Deer season is close to over for you guys and this will be on your mind till next season which is a GOOD THING....Practice alot this summer and also PLEASE PLEASE PLEASE learn to hold yourself back from running deer shots...I say this with all urgancy. I am a trained shootist formaly trained growing up by an Army sniper (my dad) and then The U.S. Navy S.E.A.L. team 9 in Tactical entry and close quarters combat along with Overwatch. I can circumsize a flea at 800 meters without even a thought and I STILL do not take a running deer shot...I cant stress enough on the importaince of CLEANLY taking a deer or any other animal..As Ive said you OWE IT TO THE DEER!!!