Welcome to theSale
Welcome to our 2026 Simmental and SimAngus High-Altitude Bull and Open Heifer Sale. This year we are offering 16 high quality yearling bulls and 6 replacement quality open heifers. Heifers have been Bangs vaccinated and registration will be transferred to the buyer for a fee of $100 over the final bid price if so desired. We think you will be pleased with the outstanding genetics and PAP scores of this year’s offerings.
Purchasing a bull is one of the most important decisions a commercial cow/calf or seedstock producer makes. Our focus is on developing animals suitable for high elevation that also carry desirable genetic traits important to our customers.
We realize that more and better genetic information greatly simplifies bull selection. We have DNA evaluations and PAP scores on every cow, bull and calf in our herd. Our objective is to eliminate as much of the guesswork as possible in our breeding program and pass that on to our customers.
Our cattle’s DNA is evaluated twice. First, by American Simmental Association through their
partnership with International Genetic Solutions. A second evaluation is done by Top Genomics through their partnership with Allied Genetic Resources. As a result, our animals all have genomically enhanced EPDs which are enormously more accurate than EPDs based solely on pedigree. Our secondary DNA evaluation by Top Genomics (through Allied) takes a deeper look at genetic markers for heritable traits important to commercial cow/calf producers and seedstock producers as well. Whether you are looking for a heifer bull, terminal sire or something in between, our genomically enhance EPDs will help you make your selection with confidence.
Besides the EPD you will notice in the catalog indicators such as G+, ACE and ATM for most animals. These are based on Allied and Top Genomics Right Choice program. That is explained on the next page. We also use Allied and Top Genomics RightMate service to make breeding selections. I can honestly say that between RightMate and the Planned Mating program through ASA it is nearly impossible to have a bad calf. Our genetics have improved enormously in a few short years by using those programs.
Additionally, we maintain a rigorous vaccination schedule and treat all of our animals for external and internal parasites with guidance provided by Alpine Veterinary Clinic. We follow Beef Quality Assurance guidelines for all aspects of our operation.
Our entire herd has been raised and PAP tested at an elevation of 7,600’ by Dr. Curtis Crawford of Alpine Veterinary Clinic. Breeding soundness exams are also conducted by Doctor Crawford. All calves are genetically tested for coat color, horned/polled gene, all known genetic defects and have tested BVD negative. All bulls sold will be trich tested and will have passed breeding soundness exams. Calves all meet ASA’s GGP 100K requirements and therefor may be used as AI sires or embryo donor cows.
Peter and Leah
Broadcasting Real-Time Auctions
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Sale Location
Monte Vista Livestock Auction
5660 US Hwy 160 East
Monte Vista, CO
Sale Day Phones
Sale Main Office (719) 852-9500
Peter Clark (719) 849-8223
Leah Clark (719) 850-2720
Vaccination Program
CALVES:
Birth – AD&E, Alpha C&D, Multimin
Branding – Cattlemaster Gold FP5, One Shot Ultra 8, Mycoplasma Bovis, Multimin
Weaning – Cattlemaster Gold FP5, One Shot Ultra 8, Multimin, Dectomax Pour-on
30 Days Post Weaning – booster One Shot
COWS AND HERD BULLS: At Preg Check – Cattlemaster 4+VL5, Vision 8 Somnus w/Spur, Multimin, Dectomax Pour-on
Pre-sale Visits
Animals may be viewed any time prior to the sale, please contact Peter or Leah to make arrangements.
Guarantee
Bulls are guaranteed as breeders the first year. If they prove to be unsatisfactory, please provide us with documentation from a qualified veterinarian and we will work with you to resolve the issue.
Semen Interest
7L Diamond Ranch will retain 1/3 semen interest of any bulls sold. Buyer shall have full possession rights and 2/3 semen interest.
Supplemental Information
Scrotal measurements will be available sale day.
Delivery
Free delivery within 250 miles. Beyond that, we will negotiate with the buyer.
Sale details
Improved Buying Confidence with Greater Genomic ASSURANCE
Access to more and better information has always been key to making wise decisions. The evolution and improvement of genetic evaluation tools too has given us an ever-clearer picture of the true genetic makeup of cattle and thus a better view of the value proposition. RightMate, powered by Top Genomics LLC is taking the evaluation of genetics and genomics one giant step further. By combining speci c genomic information with the long-proven value of EPDs, this new advancement in technology improves our depth and precision when evaluating the actual ability to transmit value and pro t.
The 3 Accreditation Logos below are designed to simplify bull selection and improve buyer con dence by more accurately describing the genetics o ered and by reducing risk. What this means to you as a customer is a much greater assurance that you are getting both what you want and need from the genetics you purchase. What it means to your seedstock provider is access to RightMate technology that simply sets them apart from the rest of the industry.
ACCREDITED GENOMIC PLUS – For the majority of producers who simply need consistent and balanced genetic improvement, without genomic setbacks, G+ Accredited bulls should be on your list for premium purchase. These sires will absolutely move you forward for both cost reduction and income producing traits and substantially reduce risk when compared to all other evaluation programs. It’s simple, the right genes are in these bulls to help secure a pro table future and the they have great EPDs to match!
ACCREDITED CALVING EASE – Simply nd bulls with the ACE logo for third party Accredited, secure Calving Ease bulls. Though we have had tools in the past to assist in choosing heifer bulls, we’ve never had one nearly this e ective. The reduced risk that comes with this genomic certi cation will simply make your decisions easier and your heifer calving season more successful. Purchase special purpose ACE bulls with con dence. They will deliver consistent and predictable calving ease.
ACCREDITED TERMINAL MATE – Just like an ATM machine makes it simpler to access your cash, the ATM Logo highlights bulls accredited to generate extra cash income as soon as your next calf crop! These bulls are meant speci cally to use only on mature cows and for the purpose of adding performance, pay weight and end product value to market.
SLD 539N
SLD 512N
SLD 508N
SLD 539N Sells as Lot 1.
SLD 512N Sells as Lot 2.
SLD 508N Sells as Lot 3.
7L Diamond Bulls
SLD 501N Sells as Lot 5.
SLD 504N
SLD
“ We have used 7L Diamond Bulls for the last few years. We run on a couple forest permits that go up over 10,000 feet. We have been really pleased with how the bulls and their offspring have performed.
- Warren & Sarah Collins, Flying M Ranch Saguache, CO
SLD 509N
SLD 509N offers a balanced EPD profile with
solid weaning and yearling growth, backed by a top 1% Stay percentile and excellent API
This bull combines calving ease, longevity, and carcass merit, making him a dependable option for building productive, long-lasting females while still adding performance.
SLD 524N
moderate PAP and strong API, this bull is well suited for high-elevation or heifer-focused programs.
SLD 517N brings power and profitability together. He excels in API and TI, ranking near the top of the group, while still maintaining calving ease and strong growth numbers across the board. His combination of performance, maternal strength, and carcass value makes him an outstanding choice for commercial cattlemen focused on long-term returns.
7L Diamond Bulls
SLD 509N Sells as Lot 6.
SLD 524N Sells as Lot 7.
SLD 517N Sells as Lot 8.
7L Diamond Bulls
SLD 526N Sells as Lot 11.
SLD 503N
SLD 507N
SLD 526N
“
Good mountain calves that gain well at altitude. Uniform and calm animals. I couldn’t ask for more.
- David Colville, Corset Ranch Del Norte, CO
SLD 527N
“
SLD 516N
SLD 516N Sells as Lot 13.
SLD 527N Sells as Lot 12.
7L Diamond Bulls
SLD 519N
SLD 535N
SLD 534N
PAP Risk Factor Very High Elevation Test Chart
PAP test conducted at elevation >7000 ft. (95% Repeatable, Predictive Value)
These are typical guidelines only. Other consideration should be given to genetics, EPD use, Systolic/Diastolic pressures, previous illness, and special consideration should be given to time the animal was housed or has been at elevation. The predictability of the PAP measurement improves over time at elevation (5,500 feet minimum). This chart is based on healthy animals greater than 10 months of age.
“ We have been using 7L Diamond Bulls for several years. They work well with our program and they have improved our genetics. The bulls work well in high elevation, and the calving ease is great. We are very pleased with them.
- Bob and Jody
La Jara, CO “
Peterson
7L Diamond Heifers
These six heifers represent our years of focus on superior genetics. Their average birth weight is 72 pounds and average weaning weight is 663 pounds. Out of our herd bulls, these heifers bring characteristics well suited for the commercial operator at any elevation.
SLD 536N
17
SLD 538N
SLD 529N
SLD
SLD 518N
SLD 531N
SLD 530N
SLD 531N Sells as Lot 21.
HA JUSTICE 30J
Homo
HOOK`S GALILEO 210G
Homo
GW LUCKY BREAK 504J
2026 PUREBRED SIMMENTAL PERCENTILE TABLE
4
3
ASA QUICK REFERENCE
TO EPDS, INDEXES AND $VALUES
EXPECTED PROGENY DIFFERENCES (EPDS): EPDs are the most accurate and effective tool available for comparing genetic levels. In using EPDs, the difference between two sires’ EPDs represents the unit difference expected in the performance of their progeny. For example, if sires A and B have EPDs of +10 and -5, a 15-unit difference would be expected in their progeny (moving from -5 to +10 yields 15 units). Key to using EPDs is knowing in what units they are expressed. For example, if the above case referred to weaning weight EPDs, sire A would be expected to sire 15 pounds more weaning weight than sire B. If calving ease was the trait, sire A would be expected to sire 15 percent more unassisted births in first-calf heifers; in other words, if sire B sired 30 assists in a group of 100 heifers, we would expect sire A to require 15 assists. A percentile-ranking chart is required to determine where a bull’s EPDs rank him relative to other bulls in the breed. For more detailed information about EPDs and $ indexes, visit www. simmental.org.
Listed below are the units in which ASA EPDs are expressed:
ALL-PURPOSE INDEX (API): Dollars per cow exposed under an all-purpose-sire scenario.
BACK FAT (BF): Inches of carcass backfat at 475 days.
BIRTH WEIGHT (BW): Pounds of birth weight.
CALVING EASE (CE): Percent of unassisted births when used on heifers.
CARCASS WEIGHT (CW): Pounds of carcass weight at 475 days.
DOCILITY (DOC): Percent of offspring receiving a disposition score of 1 (docile).
MATERNAL CALVING EASE (MCE): Percent of unassisted births in first-calving daughters.
MILK (MLK): Pounds of weaning weight due to milk.
MARBLING (MARB): Carcass marbling score at 475 days.
MATERNAL WEANING WEIGHT (MWW): Pounds of weaning weight due to milk and growth.
RIBEYE AREA (REA): Square inches of carcass ribeye at 475 days.
TERMINAL INDEX (TI): Dollars per cow exposed under a terminal-sire scenario.
WEANING WEIGHT (WW): Pounds of weaning weight.
YEARLING WEIGHT (YW): Pounds of yearling weight.
YIELD GRADE (YG): Carcass yield grade score at 475 days.
$ INDEXES: Though EPDs allow for the comparison of genetic levels for many economically important traits, they only provide pieces of the economic puzzle. This is where $ indexes come in. Through well-conceived, rigorous mathematical computation, $ indexes blend EPDs and economics to estimate an animal’s overall impact on integrated commercial production. The same technology that led to the dramatic progress in swine, poultry and dairy genetics over the last several decades was used to develop the following $ indexes:
ALL-PURPOSE INDEX (API): Evaluates sires for use on the entire cow herd (bred to both Angus first-calf heifers and mature cows) with the portion of their daughters required to maintain herd size retained and the remaining heifers and steers put on feed and sold grade and yield.
TERMINAL INDEX (TI): Evaluates sires for use on mature Angus cows with all offspring put on feed and sold grade and yield. For more detailed information about EPDs and $indexes, visit: www.simmental.org
Sale Notes
Focused
