When I started match shooting 16 years ago, I shot factory ammo (PMC, S&B, etc.). I started reloading because of cost factor and my reloads were much more accurate than factory ammo (about 40% reduction in group size) and that meant higher stage scores. Several of us shooters ordered the case quantities from Montana Gold in group buys.
When I picked up my M&P45 last year, I shot several hundred rounds of PMC/Blazer Brass factory ammo to burnish the barrel (I know, it is probably not necessary anymore for coated factory barrel). When I shot 200 gr SWC (Missouri Bullet IDP #1) loads, my shot group decreased by half compared to smallest factory shot group I got.
Another thing about reloads vs factory ammo is that I hardly get "flyers" with my reloads but get more frequent flyers with factory ammo.
I buy in bulk and stock up when I see good prices/sales at gun shows/online. Even using 9mm FMJ bullets, I can load
$95/1000 - 115 gr FMJ Montana Gold bullets from
RMR Reloading (free shipping)
$22/1000 - Winchester SP primer (Recent gun show price $20/1K + tax)
$12/1000 - Winchester 231 (Recent gun show price $129/8lbs + tax)
Total cost per 1000 = $129 or $6.45/50 for match grade ammo.
Now for lead reloads:
$70/1000 - 125 gr
Missouri Bullet (SmallBall) from Powder Valley + shipping ($57.64 + shipping)
$17.32/1000 - Tula SP primer from gun show earlier this year ($16 + tax)
$7.30/1000 - Alliant Promo from gun show earlier this year + tax ($95/8lbs)
Total cost per 1000 = $95 or $4.75/50 for lead reloads.
Many reloaders I help setup can usually recoup their reloading cost within a year of shooting even 100-200 rounds of mixed calibers per month.